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The correct sequence of cytochromes as per their involvement in ETS of respiration is… (1) cyto.a -> cyto.b -> cyto.c1 -> cyto.c -> cyto.a3 (2) cyto.a3 -> cyto.a -> cyto.b -> cyto.c1 -> cyto.c (3) cyto.b -> cyto.c1 -> cyto.c -> cyto.a -> cyto.a3 (4) cyto.a -> cyto.c1 -> cyto.b -> cyto.c -> cyto.a3

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Correct Answer: (3) cyto.b -> cyto.c1 -> cyto.c -> cyto.a -> cyto.a3 Explanation: The correct sequence of cytochromes as per their involvement in ETS of respiration is cyto.b ->...

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Read the following statements and select the one which explains “Factors” with reference to environment. (1) A particular place where organisms live (2) Environmental complex (3) External forces, substances or conditions, which can affect the living organism in one or the other way. (4) Organisms which not merely occupy the place but also specify functional role in the community

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Correct Answer: (3) External forces, substances or conditions, which can affect the living organism in one or the other way. Explanation: Factors with reference to environment are the external...

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Column A Column B Column C i) Coenozoic 2 – 65 mya Origin of vertebrates ii) Palaeozoic 500 – 165 mya Rise of egg laying mammals iii) Mesozoic 135 – 225 mya Reptiles dominant iv) Proterozoic 350 – 500 mya Trilobites dominant The correct match of Columns A, B and C is A) i B) ii C) iii D) iv

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Correct option:(C) Solution: Coenozoic era (65 million years ago) is also known as β€œage of mammals”. It rise of first placental mammals, their diversification and evolution. Palaeozoic era is marked...

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Select the correct match : I II III i) Monocyte a) Large round nucleus l) Antihistamine property ii) Lymphocyte b) Twisted nucleus m) Release heparin iii) Basophil c) Bilobed nucleus n) Phagocytic iv) Eosinophil d) Kidney shaped nucleus o) Produce antibodies A) i – d – n, ii – a – o, iii – b – m, iv – c – l B) i – b – m, ii – a – l, iii – c – n, iv – d – o C) i – c – n, ii – b – o, iii – d – m, iv – a – l D) i – a – o, ii – d – m, iii – c – l, iv – b – n

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Correct option:(A) i – d – n, ii – a – o, iii – b – m, iv – c – l Solution: White blood cells are of broadly divided into two types, agranulocytes and granulocytes. Granulocytes are divided into...

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Select the correct match : I II i) Competition a) Tapeworm and man ii) Commensalism b) Lichen iii) Mutualism c) Cattle egret and cattle iv) Parasitism d) Lions and Leopards A) i – d, ii – c, iii – b, iv – a B) i – d, ii – b, iii – c, iv – a C) i – c, ii – b, iii – d, iv – a D) i – a, ii – b, iii – d, iv – c

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Correct option:(A)i – d, ii – c, iii – b, iv – a Solution: Five types of interaction between different organisms in an ecological communities. These are competition, commensalism, mutualism,...

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Which of the following is the WRONG match between the plant and its character for adaptation of cross pollination ? A) Zostera β†’ Bright coloured flowers with nectar B) Bougainvillea β†’ Petaloid bracts C) Passion flower β†’ Corona D) Adansonia β†’ Copious nectar

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Correct option:(A)Zostera β†’ Bright coloured flowers with nectar Solution: Zostera is a submerged water plant. Cross pollination occurs with the help of water. Petaloid bracts are modified...

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Given below are some antibiotics and their microbial source. Match the correct pairs. 1) Chloromycetin a) Streptomyces griseus 2) Erythromycin b) Penicillium chrysogenum 3) Penicillin c) Streptomyces erythreus 4) Streptomycin d) Streptomyces venezuelae A) 1 – a, 2 – b, 3 – c, 4 – d B) 1 – d, 2 – c, 3 – b, 4 – a C) 1 – b, 2 – d, 3 – a, 4 – c D) 1 – c, 2 – a, 3 – d, 4 – b

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Correct option:(B)1 – d, 2 – c, 3 – b, 4 – a Solution: Chloromycetin is obtained from Streptomyces venezuelae. Erythromycin is obtained from Streptomyces erythreus. Penicillin is obtained...

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Remarkable increase in rice production from 35 million tones to 89.5 million tones during 1960 – 2000 was mainly due to __________ A) Improved semidwarf varieties B) Introduction of Golden rice C) Increased use of chemical fertilizers D) Cultivation of wild varieties

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Correct option:(A) Improved semidwarf varieties Solution: From 1960-2000 introduction of m IR-8 and Taichung Native-1 varieties of rice in 1966 resulted in a tremendous increase in rice production....

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