Question

Statement A: The secretion of collaterial gland forms the egg case in cockroach.
Statement B: The development in cockroach is hemimetabolous.

• A. Both statements A and B are correct and B is the reason for A
• B. Both statements A and B are correct and B is not the reason for A
• C. Statement A is correct and statement B is wrong.
• D. Statement B is correct and statement A is wrong.

Answer 1

Answer: (B)

Both statements A and B are correct and B is not the reason for A

• There are collaterial glands present in the female cockroaches. These glands are present behind the ovaries. These collaterial glands secrete the substance which helps in the formation of the egg case. This case protects the fertilized and developing eggs. So, the assertion statement is correct.
• Hemimetabolous is a form of incomplete metamorphosis. There is no pupal stage in the juvenile stages of development. The larval stage is completely different from the adult stage in the cockroach. So the reason statement is correct.

Thus, the correct answer is option B.