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Indicate whether the following statements are true or false: (a) Micturition is carried out by a reflex. (b) ADH helps in water elimination, making the urine hypotonic.(c) Protein-free fluid is filtered from blood plasma into the Bowman’s capsule.(d) Henle’s loop plays an important role in concentrating the urine.(e) Glucose is actively reabsorbed in the proximal convoluted tubule.
Indicate whether the following statements are true or false:
(a) Micturition is carried out by a reflex.

(b) ADH helps in water elimination, making the urine hypotonic.

(c) Protein-free fluid is filtered from blood plasma into the Bowman’s capsule.

(d) Henle’s loop plays an important role in concentrating the urine.

(e) Glucose is actively reabsorbed in the proximal convoluted tubule.
Biology | CBSE | Class 11 | Excretory Products and their Elimination | Exercise 1 | NCERT
Indicate whether the following statements are true or false:
(a) Micturition is carried out by a reflex.

(b) ADH helps in water elimination, making the urine hypotonic.

(c) Protein-free fluid is filtered from blood plasma into the Bowman’s capsule.

(d) Henle’s loop plays an important role in concentrating the urine.

(e) Glucose is actively reabsorbed in the proximal convoluted tubule.

Solution: The following statements are explained as-

(a) Micturition is a reflex reaction of passing urine. The stretch receptors in the bladder wall are stimulated by distension, and reflex action is carried out. As a result, the assertion is correct and true.

(b) The hypothalamus produces ADH (anti-diuretic hormone), which is secreted by the neurohypophysis (posterior pituitary gland). ADH lowers urine production by increasing water reabsorption in the collecting ducts. As a result, the assertion is incorrect and false.

(c) The glomerular filtrate contains all of the components of plasma excluding protein. As a result, the assertion is correct and true.

(d) In the Henle loop, The counter current multiplication happens due to concentrating the urine. As a result, the assertion is correct and true.

(f) The proximal convoluted tubule absorbs glucose and salt and returns it to the circulation via active transport. As a result, the assertion is correct and true.

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