Question

Given below are two statements
Statement I: Spermatophores are rare or absent in Hymenoptera
Statement II: Periplaneta has 60 Malpighian tubules
In light of the above statements, choose the most appropriate answer from the options given below

• A. Both Statement I and Statement II are correct
• B. Both Statement I and Statement II are incorrect
• C. Statement I is correct but Statement II is incorrect
• D. Statement I is incorrect but Statement II is correct

Hint:

The cockroach (Periplaneta americana) has approximately 150 Malpighian tubules arranged in 6 bundles, which is a characteristic diagnostic feature of its digestive and excretory systems.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Insect reproduction and excretion utilize diverse anatomical structures.
Spermatophores are capsule-like structures used to transfer sperm during mating.
Malpighian tubules are the primary excretory organs in most insects, with their number varying across taxa.

Step 2: Detailed Explanation:
Let us analyze both statements:
1. Statement I: In Hymenoptera (ants, bees, wasps), sperm transfer during mating typically occurs via liquid semen rather than spermatophores.
The use of spermatophores is rare or absent in this order, making Statement I correct.
2. Statement II: The American cockroach (Periplaneta americana) has a highly developed excretory system.
Its Malpighian tubules are arranged in 6 distinct bundles at the junction of the midgut and hindgut, with each bundle containing approximately 25 tubules.
This results in a total of approximately 150 Malpighian tubules, which is significantly more than 60.
Therefore, Statement II is incorrect.

Step 3: Final Answer:
Therefore, Statement I is correct but Statement II is incorrect.