Solution: Phelloderm → Phellogen → Phellem Phellem or cork is the outermost layer, followed by phellogen (cork cambium) which in turn is followed by phelloderm.
Solution:
Solution: The center ear contains three ossicles which are masterminded in a chain design called the malleus, incus and stapes The malleus is joined to the tympanic film and the stapes is appended...
Solution: Any nerve drive is passed starting with one neuron then onto the next neuron by means of the axon. Transport and arrival of a synapse happen inside a neurotransmitter. At a substance...
solution:
Solution: Representation of impulse conduction through an axon.
solution: Frontal cortex – It is additionally isolated into 4 flaps: a. Front facing projection – related with grammatical forms, thinking, arranging, critical thinking and development. b. Parietal...
solution:It helps in balancing the tension on one or the other side of the eardrum. It is the cylinder interfaces the center ear pit with the pharynx.
Column IColumn II(a) T4(i) Hypothalamus(b) PTH(ii) Thyroid(c) GnRH(iii) Pituitary(d) LH(iv) Parathyroid Column IColumn II(a) T4(ii) Thyroid(b) PTH(iv) Parathyroid(c) GnRH(i) Hypothalamus(d) LH(iii)...
The follicle stimulating hormone or FSH is a glycoprotein polypeptide hormone that does not dissolve in lipid and therefore cannot enter the target cell. It binds to the surface of the cell and...
(a) Diabetes mellitus (b) Goitre (c) Cretinism Answers: (a) Inadequate secretion of Insulin is responsible for Diabetes mellitus. (b) Inadequate secretion of Thyroxin is responsible for Goitre. (c)...
(a) Hyperglycemic hormone and hypoglycemic hormone (b) Hypercalcemic hormone (c) Gonadotrophic hormones (d) Progestational hormone (e) Blood pressure lowering hormone (f) Androgens and estrogens...
(a) Hypothalamus (b) Pituitary (c) Thyroid (d) Parathyroid (e) Adrenal (f) Pancreas (g) Testis (h) Ovary (i) Thymus (j) Atrium (k) Kidney (l) G-I Tract (a) Hypothalamus:- Releasing hormones:...
(a) Androgens (b) Estrogens (c) Insulin and Glucagon (a) Androgens: 1. The interstitial cells found in the intertubular space produce a set of hormones called androgens, testosterone in particular....
(a) Parathyroid hormone (PTH) (b) Thyroid hormones (c) Thymosins (a) Parathyroid Hormone (PTH) 1. It is a peptide hormone secreted by the parathyroid gland 2. Rotating levels of calcium ions...
Hormones Target gland (a) Hypothalamic hormones __________________ (b) Thyrotrophin (TSH) __________________ (c) Corticotrophin (ACTH) __________________ (d) Gonadotrophins (LH, FSH)...
(a) Exocrine gland (b) Endocrine gland (c) Hormone 1. Exocrine glands release their fluids into the ducts leading to the surface of the body or to certain organs of the body. 2. Endocrine gland are...
Solution: The buccal cavity is responsible for two purposes. The first is mastication, or chewing, and the second is swallowing. The food we eat is lubricated by saliva, and the cheering process...
Solution: The hepatopancreatic complex plays a major role in the digestion of carbohydrates, proteins and fats Bile is produced by the liver. Bile aids in fat emulsification. Bile also offers an...
Solution: (i) Simple Diffusion: Simple diffusion absorbs small amounts of monosaccharides like glucose, amino acids, and certain electrolytes like chloride ions. (ii) Facilitated Transport: The...
Solution: Secretion from gastric glands Secretions in Liver Secretions from the small intestine The nature of end products obtained after complete digestion of food is as follows: Dipeptides → Amino...
Solution: 1. The mouth, which is the initial section of the alimentary canal, is used to eat roti and dal. It then turned into a semisolid paste that was combined with saliva. Saliva contains an...
Solution: Fats (lipases) → Diglycerides → Monoglycerides Intestinal lipases act on di-monoglycerides and convert into fatty acids and glycerol. Diglycerides and monoglycerides in the presence of...
Solution: Constipation is a condition in which faeces are held in the rectum and bowel movements are irregular. Indigestion occurs when food is not properly digested, resulting in a sense of...
Solution: They are connected by many intrinsic and extrinsic nerves and are regulated by a neurological and hormonal system. This aids in the normal functioning of the alimentary canal's many...
Solution: Mucus and bicarbonates assist and protect the mucosal epithelium from increased concentrations of released hydrochloric acid excoriation. They also serve as an alkaline medium.
Solution: i. Mucous Neck cells – they secrete mucus ii. Peptic or chief cells – they secrete Proenzyme Pepsinogen and Prorennin iii. Parietal or oxyntic cells – they secrete HCl and intrinsic...
a. Absorption of amino acids and glycerol takes place in the. (small intestine/ large intestine) b. The faeces in the rectum initiate a reflex causing an urge for its removal. (neural /hormonal) c....
Solution: The gall bladder's function is to retain and concentrate bile juice secreted by the liver, as well as to release it. The bile juice will flow directly to the small intestine if the gall...
Solution: The oral cavity is the first human alimentary canal, followed by the mouth. The short pharynx follows, followed by the oesophagus, and finally the stomach. The stomach is divided into two...
Solution: The small intestine is the section of the alimentary canal where the digested food is absorbed the most. Amino acids, carbohydrates such as glucose and fructose, fatty acids, and glycerol...
Solution: The pancreas is a digestive organ found between the arms of the U-shaped duodenum. It is an elongated composite organ. The exocrine component secretes enzyme-rich alkaline pancreatic...
a. Goblet cells are located in the intestinal mucosal epithelium and secrete chymotrypsin/mucus. b. Fats are broken down into di- and monoglycerides with the help of amylase/ lipases. c. Gastric...
Solution: No, bile is not produced by the gall bladder. Bile is solely stored and concentrated in the gall bladder.
Solution: Cardiac section, fundic area, and pyloric portion are the three major parts.
Solution: Each tooth is lodged in a socket of jawbones in the thecodont type of teeth linked to jawbones.
Solution: Digestion is the process of breaking down complex foods into easily digestible ones.
Solution: The enzymes involved in the degradation of nucleotides into sugars and bases are known as nucleotidases and nucleosidases.
Solution: Water, simple carbohydrates, alcohol, and other substances are absorbed in the stomach portion of the alimentary canal.
Solution: The gut mucosa secretes enterokinase. Enterokinase transforms Trypsinogen into active trypsin.
Solution: The chyme is made up of food that has been fully mixed with the stomach's acidic gastric liquid by the churning movements of its muscular wall.
a. Trypsinogen is an inactive enzyme b. Trypsinogen is secreted by intestinal mucosa c. Enterokinase is secreted by pancreas d. Bile contains trypsin Solution: Option (a) is the answer.
a. Metabolism of carbohydrate b. Digestion of fat c. Formation of bile d. Secretion of a hormone called gastrin Solution: Option (d) is the answer.
Solution: Option (b) is the answer.
Column I Column II A. Lipase (i) Dipeptides B. Nuclease (ii) Fats C. Carboxypeptidase (iii) Nucleic acids D. Dipeptidases (iv) Proteins, peptones and proteoses Options: a. A-ii,...
Column I Column II A) Duodenum i) A cartilaginous flap B) Epiglottis ii) Small blind sac C) Glottis iii) U shaped structure emerging from the stomach D) Caecum iv) Opening of...
Column I Column II A Biomacromolecules of food i Alimentary canal and associated gland B Human digestive system ii Embedded in jawbones C Stomach iii Outer wall of visceral organs D...
a. Pancreas b. Adrenal c. Liver d. Salivary glandsSolution: Option (b) is the answer.
system? a. Tetanus b. Diarrhoea c. Jaundice d. Dysentery Solution: Option (a) is the answer.
a. Bile b. Pancreatic juice c. Both bile and pancreatic juice d. Saliva Solution: Option (c) is the answer.
a. They possess microvilli b. They increase the surface area c. They are supplied with capillaries and the lacteal vessels d. They only participate in digestion of fats Solution: Option (d) is the...
a. is gaseous b. is responsible for phototropism c. induces femaleness in flowers of cucumber d. is used for killing weeds (dicots) e. induces flowering in long-day plants Solution: a. is gaseous:...
a. What could be the probable reason for this? b. What term is used for this promotion of flowering under low temperature? c. Which plant hormone can replace the cold treatment? Solution: a) They...
a. Amyloplast : b. Elaioplast : c. Chloroplasts : d. Chromoplasts : e. Leucoplaststores protein granule.store oils or fats.contain chlorophyll pigments. contain colored pigments other than...
Solution: They would generally fail to flower or yield ripe grain during a flowering season if planted in the spring, thus they are sown in the autumn. After that, they germinate, and seedlings...
a. Maximum growth is observed in ________ phase. b. Apical dominance is due to ____________ c. ___________ hormone initiate rooting d. Pigment involved in Photoperception in flowering plants is...
a. Why do you think this happens? b. How is this advantageous to the plant? Solution: a. This means that the plant enters the vegetative growth phase. A flowering hormone called florigen is...
Solution: To effectively eliminate weeds, auxins, a plant growth hormone regulator, can be used to selectively destroy them.
Solution: For this, parthenocarpy might be used. Gibberellins and auxins producing parthenocarpy in tomatoes are examples of growth hormones that can cause parthenocarpy.
Solution: Parthenocarpy is the artificially induced growth of fruit that does not require fertilisation. Gibberellin is a plant hormone that is used to promote parthenocarpy.
Column I A. LeavesB. SeedC. RootsD. AspirinE. Plasmolyzed cellColumn IIi. Anti-transpirantii. Transpirationiii. Negative osmotic potentialiv. Imbibitionv. Absorption Solution: (A) Leaves -ii....
Solution: Because the meristematic tissues of the meristems present in various locations of the plant body are an active site of cell division where growth is indefinite, the plant growth and...
a. This is which part of a dicotyledonous plant? b. If we remove part 1 from the plant, what will happen? Solution: a) This is the shoot apex meristem of a dicotyledonous plant. b) The apical bud is...
Solution: According to physics, if a substance regains its previous shape once deforming forces are removed, the substance is said to exhibit elasticity. Plasticity, on the other hand, is defined as...
Solution: Meristematic cells are identified by the presence of the following characteristics on a slide with different types of cells: (a) A cell wall that is thin.(b) Cytoplasm that is dense(c)...
Solution: The process of Decapitation of plants leads to the inactivation of axillary buds and promotes the growth of lateral buds giving a carpet like an appearance.
Solution: When Charles Darwin and his son Francis Darwin observed the coleoptiles of canary grass, they noticed that it responded to unilateral illumination by bending and growing towards the light...
Solution: Plant hormones can be found in a variety of tissues, including the tips of shoots, the tips of roots, meristematic tissues, and apical buds, among others. The vascular bundle tissues, such...
Solution: Apical dominance is the mechanism behind the phenomena of the terminal/apical bud suppressing the growth of lateral buds. Decapitation, or the removal of the apical bud (shoot cutting),...
Solution: It's difficult to attribute any effect to a single hormone because it might have both a synergistic and antagonistic effect. The synergistic effect occurs when two hormones interact and...
Positive Roles of Ethylene : Negative Role of Ethylene : Positive Role of Abscisic acid: Negative Role of Abscisic acid: Solution: (a) Positive Roles of Ethylene: Ripening of fruits – It stimulates...
a. auxin precursors b. anti-auxins c. synthetic auxins Solution: a. Auxin precursors are responsible for auxin synthesis. b. Anti auxin function as an inhibition of the action of auxin by competing...
a. Differentiation b. De-differentiation c. Redifferentiation Solution: a) Differentiation: the cell of the apices of roots, apices of shoot and cambium can differentiate and mature so that they can...
Solution: Plants do have a different growth pattern than animals. Only meristematic tissues can continue to divide, i.e. meristems are the sections of the plant that continue to grow indefinitely...
Solution: a) Meristematic cells near the root tip: -large nucleus -rich protoplasm -vacuoles are less in number b) The cells in the elongation zone of the root -more number of vacuoles -new...
Solution: A short-day plant requires a long period of darkness to flower because the chemical changes that occur during this time flower the plant. As a result, it necessitates a brief daytime...
Solution: The elongation of internodes is a characteristic of Gibberellin that causes foolish seedling disease in rice.
Solution: Yes, Unicellular organisms do, in fact, grow. Growth characteristics include an increase in cell mass and a rise in cell number. It multiplies by dividing its cells or by undergoing cell...
Solution: 1: Lag phase 2: Log phase 3: Stationary phase
Solution: a) Photosynthesis: Photosynthesis is the conversion of carbon dioxide into carbohydrates by green plants using light energy. b) Photoperiodism: Flowering is regulated in photoperiodism in...
Solution: They are eliminating the shoot tips that cause lateral buds to grow. If the tip is not removed, the apical buds impede lateral bud growth.
a. IAA b. Gibberellins c. Cytokinins Solution; a. IAA: in the tips of the shoot and apical buds b. Gibberellins: in young leaves and tips of roots c. Cytokinins: meristematic zones of the...
Solution: Ethylene (C2H4) is the plant growth regulator that can be applied to achieve this.
Solution: Henbane: Long Day Plant (LDP) Spinach: Long Day Plant (LDP) Rice: Short Day Plant (SDP) Strawberry: Short Day Plant (SDP) Bryophyllum: Long Short Day plant (LSDP) Sunflower: Day Neutral...
Solution: Gibberellins promote the formation of male flowers on genetically female plants in Cannabis whereas ethylene promotes formation of female flowers on genetically male plants. GA does not...
a. Give two functions of this phytohormone. b. Which property of Gibberellin caused foolish seedling disease in rice? Solution: a) Gibberellins cause fruits to lengthen and form to improve. It is...
Solution: L1 = L0 + rt 19 – 5 = r x 1 14cm per week Relative growth rate = Change/Initial*100 19-5/5 x 100 = 14/5 x 100 =280%
a. Increase the yield of sugar cane. b. Promote lateral shoot growth. c. Cause sprouting of potato tuber. d. Inhibit seed germination. Solution: a. Increase the yield of sugar cane: Gibberellins b....
a. A phase of growth which is maximum and fastest is __________. b. Apical dominance as expressed in dicotyledonous plants is due to the presence of more ________ in the apical bud than in the...
a. Meristem b. Flower c. Floral buds d. Leaves Solution: Option (d) is the answer.
a. Bear flowers with one ovary b. Flower once and die c. Bear only one flower d. All of the above Solution: Option (b) is the answer.
a. Ethylene b. Cytokinin c. Gibberellic acid d. IAA Solution: Option (c) is the answer.
a. IAA b. Cytokinin c. Gibberellin d. Ethylene Solution: Option (c) is the answer.
i. Fusion of non-somatic cells takes place. ii. Transferring of genetic material takes place. iii. Cells follow the pattern of reductional division. iv. Offspring resembles the parents up to some...
a. Exarch and endarch b. Stele and vascular bundle c. Protoxylem and metaxylem d. Interfascicular cambium and intrafascicular cambium e. Open and closed vascular bundles f. Stem hair and root hair...
a. Plasmodesmata b. Middle lamella c. Secondary wall Solution: a. Plasmodesmata – A cytoplasmic junction between two cells through the cell wall are called Plasmodesmata. With the help of it the...
Solution: Pinus does not shed its leaves during a particular season and is always evergreen. Hence Pinus is considered as an evergreen tree that belongs to gymnosperms. The leaves in gymnosperms can...
Solution – difference between pectoral and pelvic girdle are : Pectoral girdlePelvic girdleLocated in shoulder regionLocated in hip region clavicle and scapula are the two bones which...
Solution – calcium plays an important role in muscle contraction by building interactions between proteins , myosin and actin . It binds with troponin C and aids the head of the myosin to tighten...
Relaxation of muscles happens, when actin and myosin filaments slide away from each other. The striations appear in the striated muscles, due to the alternate bands of myosin and actin. The...
Solution – when the intervertebral disc is displaced from its original position then its termed as slipped disc . It causes weakness of the muscles, pain in the muscles of arms and legs and lower...
Solution – yes in some cases calcium ion concentration in the blood leads to tetany . In muscle contraction calcium plays an important role . The parathyroid hormones increases the concentration of...
Solution – the components of pelvis girdle are - ilium, ischium and pubis . It articulates with, femur through acetabulum. The components of pectoral girdles are – scapula and clavicle...
Solution - The source of energy for muscle contraction is ATP (Adenine Triphosphate) . ATP → ADP + Pi + Energy
a. What happened to her muscles when she did strenuously exercise? b. How did her breathing rate change? Solution – Because of the accumulation of lactic acid in the muscles her muscles got...
a. Rahul has gained weight due to the accumulation of fats in the body. b. Rahul has gained weight due to increased muscle and less fat. c. Rahul has gained weight because his muscle shape has...
Solution – two hormones which results in fluctuation of Ca level are : Thyrocalcitonin (TCT) which lowers the calcium and potassium levels in the blood Parathyroid hormone which increased level...
a. What will happen if more of Ca+ is in extracellular fluid? b. What will happen if very less amount of Ca+ is in the extracellular fluid? Solution – a. If more of Ca+ is in the...
Solution - rheumatoid arthritis is an auto immune disease in which old age people often suffer from stiff and inflamed joints . The reason for this disease are – Inflammation in synovial joints...
Solution - Humerus , Radius, and Ulna are the three bones with which our forearm is made up of . The shoulder and the elbow joint if formed by the humerus , the radius bone stretches from ...
Solution - There are four ball and socket joints present in the human body, two in hip joint and two in shoulder joints . One of the ball and socket joint is - found between the humerus and Pectoral...
Solution - our bone joints function without pain because of the synovial fluid present in the synovial cavity .
Solution - Myasthenia gravis is an autoimmune disease which affects the neuromuscular junction tissue. The underlying cause of Myasthenia gravis (MG) is that it is caused by an error in the...
solution: On the off chance that somebody gets a blow on the rear of the neck, it might prompt the disengagement of cervical vertebrae (found right beneath the skull).
solution: In PCs, the information gadgets are mouse and console while in the neural framework, the tactile neurons go about as information gadgets which take inputs from the climate.The message from...
solution: Electrical transmission happens at the electrical neurotransmitter and this will be the quicker transmission. Electric flow moves straightforwardly from one neuron are in exceptionally...
a. Resting potential. b. Nerve motivation c. Synaptic parted d. Synapses I. synthetic compounds associated with the transmission of motivations at neural connections. ii. the hole between the...
solution: Vestibular device (saccule, utricle and crescent trenches)
solution: The vestibular arrangement of the internal ear is related with dizziness.
solution: The craving place is situated in nerve center in the human cerebrum i.e hypothalamus in the human body.
Solution: When any plane passing through the central axis of the plant cell divides the cell into two identical halves called radial symmetry.
solution: Dim matter – The cerebral cortex is alluded to as Gray matter because of its grayish appearance White matter – Fibers of the parcel are covered with a myelin sheath.
Solution: The placenta is a tissue that is flattened, cushion-like tissue. Through the placenta, the ovule is attached to the wall of the ovary. Placentations are of many types like marginal, axile,...
Solution: i. Structural: In deciduous trees, separation zone is formed at the base of the petiole. It is composed of a top layer(distal) and a bottom (proximal)layer. The cells in the top layer have...
Solution: Palm is a monocotyledonous plant, yet it increases in girth slowly due to secondary growth. It is due to parenchymatous cell division and enlargement in the ground tissue. Thus, repeated...
solution: The limbic framework (the inward piece of the cerebral side of the equator and a gathering of related profound constructions) and nerve center (a little district situated at the foundation...
Solution: Peepal is a dorsiventral leaf which is a dicot. Stomata are more on the lower surface and mesophyll is made up of two types of tissues i.e., spongy parenchyma and palisade parenchyma....
solution: The human cerebrum is ensured by the skull. Inside the skull, there are cranial meninges that cover the cerebrum. The cranial meninges are comprised of three layers, to be specific – Dura...
Solution: Stomata regulate the process of transpiration and gaseous exchange. The epidermal cells surrounding the guard cells are known as Subsidiary cells. The guard cells and epidermal cells are...
a. Sieve tube b. Intrafascicular cambium c. Collenchyma d. Aerenchyma Solution: a. Sieve tube – They help in the translocation of synthesized food throughout the plant. It is present in phloem...
solution: The request for gathering and transmission of the sound wave from the eardrum is – Ear Drum → Malleus → Incus → Stapes → Cochlear → Cochlear nerve
solution: The cone cells present inside the retina empower us to see shaded items around us.
Solution: Lenticels are eye-shaped openings present on the trunk or stem of the tree. The minimum amount of transpiration takes place through it. Stomata are bean-shaped openings present on the...
solution: Keeping up with the harmony between the body and stance is finished by the internal ear. There are two sections which are half circle channels and vestibules are associated with the...
Solution: It is an anatomical abnormality. It is an abnormal type of secondary growth where the vascular cambium present in the dicot does not occur in its actual position. In the case of old tree...
Solution: Anything when goes in excessive will create a harmful result. When excess water is poured into plants, the water removes the air trapped between the soil particles and thus minerals and...
Solution: The rings in the trunk of the tree are formed by cambial rings due to secondary growth. Each ring contains earlywood and latewood. Secondary growth occurs in dicot trees due to the...
i. Root Hair: It increases the surface area for absorption of water and minerals from the soils that helps the plant flourish faster. ii. Trichomes: They are also known as stem hairs. They help in...
Solution: Meristematic tissue, which undergoes repeated mitotic division because it is the most actively dividing region of the plant, is responsible for the rapid growth of Cynodontylon.
Solution: In Angiosperm-Xylem formed by vessels in these plants. It contains companion cells and has a sieve tube present in them. It has sieve plates that consist of P-protein. In gymnosperm-Xylem...
solution: The right request of contribution of the given pieces of neuron in electrical motivation is- Dendrites → Cell body → Axon → Axon terminal → Synaptic handle
a. Hemp b. Cotton c. Coir d. Jute Solution: a. Stem of Cannabis sativa. b. Epidermal growth of cotton seeds. c. Coconut husk. d. Stem of Corchorus...
a. Outside ear b. Center ear c. Half circle channel d. Cochlea solution: Alternative (d) is the appropriate response.
a. Cochlea b. Half circle waterway c. Utriculus d. Sacculus solution: Alternative (a) is the appropriate response.
Solution: As time passes the plant grows older and the epidermis is replaced by these dead tissues called cork. It is several layers of thick bark with no intercellular spaces. Commercial cork is a...
Solution: The above structure is of a chloroplast which is present in plant cells. (a) This structure can be observed in the cell of a plant. (b) Since chloroplast can self-replicate, it can be...
a. Sweat organ b. Prostate organ c. Cowper's organ d. Ceruminous organ solution: Choice (d) is the appropriate response.
Solution: The stone-like structures present in peach or pear are stone cells also called as Sclerieds. They are a type of Sclerenchyma that provides mechanical support to organs.
Solution:
a. Focal point, iris, optic nerve b. Focal point, fluid humor and glassy humor c. Cornea, focal point, iris d. Cornea, focal point, optic nerve solution: Choice (b) is the appropriate...
a. Vitamin A b. Vitamin B c. Vitamin C d. Vitamin D solution: Choice (a) is the appropriate response.
Solution: (a) Bundle sheath cells and mesophyll cells are characteristics of monocot plants. (b) Oxaloacectic acid (OAA) is the first stable compound produced in the C4 cycle. (c) PEP carboxylase,...
a. Radially arranged vascular bundle. b. Tetrarch condition of protoxylem. Which part of the plant shows these features? Solution: The transverse section is of dicot root. Vascular bundles present...
Solution: Heartwood (Duramen) is wood present in an angiosperm that is made up of dead cells. It is dark in color. Softwood (alburnum)is wood present in a gymnosperm. that is made up of living...
Solution: To comprehend this, we must examine the graphs below. The first graph depicts the rate of photosynthesis as determined by oxygen release. The absorption of different wavelengths of light...
a. Cerebral cortex b. Cerebellum c. Limbic framework d. Medulla solution: Choice (c) is the appropriate response.
a. Muscle shaft b. Engine neuron c. Mind d. Interneurons solution: Alternative (c) is the appropriate response.
Solution: It's feasible to do cyclic photophosphorylation here. The creation of ATP from ADP and inorganic phosphate in the presence of light is known as photophosphorylation.
a. Thoughtful and physical neural framework b. Thoughtful and parasympathetic neural framework c. Focal and physical sensory system d. Nothing from what was just mentioned solution: Alternative (b)...
a. Chemicals b. Synapses c. Particle siphon d. Nothing from what was just mentioned solution: Alternative (c) is the appropriate response.
Solution: If one debarks a tree then the periderm part (i.e., all tissues exterior to vascular cambium) of the plant is being removed. On debarking only the vascular cambial region remains left...
a. Na+ and K+ b. CO3++ and CI c. Ca++ and Mg++ d. Ca++ and CI solution: Choice (a) is the appropriate response.
Solution: C4 plants do not experience photorespiration because they use a method to raise the concentration of carbon dioxide at the enzyme site. When the C4 acid from the mesophyll is broken down...
Solution: During the Calvin cycle, the enzyme catalyzes the conversion of carbon dioxide to sugar. Rubisco can be found everywhere, from cyanobacteria to the undersides of enormous trees. Rubisco...
Solution: RuBisCO and PEPcase are two key enzymes in the C3 and C4 pathways, respectively. In C3 plants, RuBisCO is the predominant carbon dioxide acceptor, whereas, in C4 plants, PEPcase is the...
Solution: A coating of giant cells surrounds the vascular bundles in leaves. Chloroplast, in particular, impregnates multiple layers of cells surrounding the bundle cell. Gases cannot pass through...
a. Chemicals b. Synapses c. Cerebrospinal liquid d. Lymph solution: Choice (b) is the appropriate response.
Solution: The RuBisCO enzyme is attracted to both carbon dioxide and oxygen. This binding, however, is a competitor. It has a stronger affinity for carbon dioxide than it does for oxygen. The...
Solution: The following are important events and end products of the light reaction. It's crucial to note that these events are listed in the order in which scientists discovered them, not in the...
Solution: a. The photosynthetic rate is indicated by the action spectrum. The measurement is oxygen release, which can be compared to the action spectrum by looking at the oxygen releases on the...
Solution: Phelloderm → Phellogen → Phellem Phellem or cork is the outermost layer, followed by phellogen (cork cambium) which in turn is followed by phelloderm.
Solution: The difference between phellogen and phelloderm is: Phellogen is a meristematic tissue. It is also called cork cambium, which protects the delicate vascular cambium and secondary phloem...
Solution: Under the following conditions, C4 plants outperform C3 plants: Even at low CO2 concentrations, C4 plants can perform photosynthesis. Saturation occurs in C4 plants around 360 l L1, but...
Solution: Bulliform cells make the leaves curl during the condition of the water stress. The epidermal cell modification in plants that prevents water loss is known as Bulliform Cells.
Solution: Chlorophyll a is the most abundant pigment in plants. The optimal efficiency between blue and red light wavelengths is demonstrated by this pigment. Because pigments can absorb light of a...
Solution: It is formed due to the meristematic activity of cambium and it includes- Interfascicular cambium -Present between xylem and phloem. Intrafascicular cambium- Present between the two...
Solution: Photosynthesize can occur in any portion of the plant that is green in color. As a result, the assertion is incorrect. Chlorophyll roots from Trap and Timisoara, as well as photosynthesis,...
a. Polyarch xylem b. Well-developed pith c. Radial vascular bundle Solution: (a) Polyarch xylem is present in monocot root. When many strands of xylem in the stele region are present, it is referred...
Solution: The epidermal cell modification in plants that prevents water loss is known as Bulliform Cells. They are empty colorless modified epidermal cells.
Solution: A thick waxy layer i.e., the cuticle is present on the surface of the leaves and stems which helps the plant prevent loss of water. The cuticle is absent in roots, unlike stems and leaves.
Solution: The main function of phloem parenchyma is to store photosynthates and other substances like resins, latex and mucilage. Help in translocation of foods i.e., lateral conduction of food.
Hint: protoxylem is the first formed primary xylem that matures before other organs complete their elongation. Solution: a.If the protoxylem lies next to the phloem, this type of arrangement of...
Solution: a. Maize is a C4 plant, while euphorbia is a CAM plant. Both are capable of surviving in tropical climates. b. Maize is a C4 plant, which means it has higher photosynthetic efficiency. c....
Solution: (a) Photorespiration, is a process that occurs in chloroplasts, mitochondria, and peroxisomes. (b) Photorespiration happens when there is an abundance of oxygen rather than carbon dioxide,...
Solution: Because chloroplasts have their own DNA, they are referred to as semi-autonomous organelles. Furthermore, they have the ability to create their own energy and do not require the cell....
Solution: The pigment Lycopene is responsible for the red color of tomatoes, carrots, and chilies. This isn't a pigment that helps with photosynthesis. The plastid which contains this pigment is...
Solution: To a large extent, this is correct, as cyanobacteria and green plants have created all of the food on the planet. Other autotrophs exist, although their contribution to the food chain of...
Solution – the difference between the matrix of bone an cartilage is : Matrix of boneMatrix of cartilageThese are vascular in natureThey are non – vascularThey contain a protein called as osseinThey...
Solution – the correct sequence of the three bones located in middle ear is : Malleus → Incus → Stapes
Solution - muscle cells or muscle fibers is the name to which Sarcolemma, sarcoplasm and sarcoplasmic reticulum refers to .
Solution – Locomotion requires a perfect coordinated activity of muscular, Skeletal, Nervous systems.
Solution: The tissues that perform this task are parenchymatous tissues. Explanation: Parenchyma cells are thin and made up of cellulose that stores the product of photosynthesis .
a. exhibit ameboid movement b. exhibit ciliary movement solution – the cells / tissues are a. exhibit ameboid movement - macrophage cells and leucocyte cells b. exhibit ciliary movement...
Column I A. Sternum B. Glenoid Cavity C. Freely movable joint D. Cartilaginous jointsColumn II i. Synovial fluid ii. Vertebrae iii. Pectoral girdle iv. Flat bones Options: a. A-ii, B-i, C-iii, D-iv...
a. Muscles in the wall of alimentary canal b. Muscles of the heart c. Muscles assisting locomotion d. Muscles of the eyelids correct option –( b ) explanation – heart muscles are striated muscles...
a. Head of humerus bone articulates with the acetabulum of the pectoral girdle. b. Head of humerus bone articulates with the glenoid cavity of the pectoral girdle. c. Head of humerus bone...
a. Heart muscles are striated and involuntary b. The muscles of the hands and legs are striated and voluntary c. The muscles located in the inner walls of the alimentary canal are striated and...
a. Arthritis b. Osteoporosis c. Rickets d. Atherosclerosis correct option –(d ) explanation – atherosclerosis is defined as the accumulation of fats and cholesterol in the walls of the artery ....
a. It is retained in the center of the axis b. It gets crushed c. Surrounded by endodermis d. It gets surrounded by secondary phloem Solution: Option (a) is the answer.