NEETZoologyStructural Organisation in Animals
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Cockroach is a uricotelic animal. Reason (R): Malpighian tubules absorb nitrogenous wastes from the haemolymph and convert them into urea. In the light of the above statements, choose the correct answer from the options given below:
Options
- ABoth (A) and (R) are true and (R) is the correct explanation of (A)
- BBoth (A) and (R) are true but (R) is not the correct explanation of (A)
- C(A) is true but (R) is false
- D(A) is false but (R) is true
Correct answer
C. (A) is true but (R) is false
Step-by-step solution
According to NCERT, cockroaches excrete nitrogenous waste primarily in the form of uric acid, which makes them uricotelic animals. Thus, Assertion (A) is true. The Malpighian tubules are the principal excretory organs in cockroaches. They absorb nitrogenous waste products from the haemolymph and convert them into uric acid, not urea. This uric acid is then excreted out through the hindgut. Thus, Reason (R) is false. Therefore, (A) is true but (R) is false. Answer: (A) is true but (R) is false