Question

Assertion (A) Malpighian tubules are excretory organs in most of the insects.
Reason (R) These help in excretion of urea and creatinine.

• A. If both A and R are true and R is the correct explanation of A
• B. If both A and R are true, but R is not the correct explanation of A
• C. If A is true, but R is false
• D. If A is false, but R is true

Answer 1

Answer: (C)

Assertion is true, but Reason is false and can be corrected as
Insects are the members of phylum-Arthropoda, in which excretion takes place through Malpighian tubules. But, insects excrete uric acid (not urea) as their nitrogenous wastes in the form of pellet or paste which minimise the loss of water. Thus, insects are called uricotelics.