Question

In cockroach, excretion is brought about by
A. Phallic gland
B. Uricose gland
C. Nephrocytes
D. Fat body
E. Collaterial glands

• A. A, B and E only
• B. B, C and D only
• C. B and D only
• D. A and E only

Answer 1

The Correct Option is B

The question asks which organs are responsible for excretion in cockroaches. To solve this, we need to examine each option's role in the excretory system of the cockroach.

1. Phallic Gland: This gland is involved in the reproductive system of cockroaches and plays no role in excretion.
2. Uricose Gland: This is involved in storing and the excretion of uric acid, which is a primary waste product in insects like cockroaches.
3. Nephrocytes: These are involved in collecting and filtering waste materials from the hemolymph, playing a crucial role in excretion and maintaining hemolymph composition in cockroaches.
4. Fat Body: Similar to the liver in vertebrates, fat bodies serve in metabolism and storage of nutrients, and they also help in detoxification and excretion by assimilating waste materials.
5. Collaterial Glands: Found in female cockroaches, these glands are associated with reproduction and have no role in excretion.

From the analysis above, the correct answer is B, C, and D only. The "Uricose Gland," "Nephrocytes," and "Fat Body" are all involved in the excretion processes of cockroaches.