Question

Which of the following doesn't contribute to prevent loss of water from the body of cockroach?

• A. Chitinous exoskeleton
• B. Uric acid excretion
• C. Biting and chewing type of mouth parts
• D. Both A and B

Answer 1

The correct option is C Biting and chewing type of mouth parts

• Chitinous exoskeleton prevents the delicate tissues of cockroach from becoming dry. In short, it acts as a watertight barrier against dehydration, which is crucial for their survival.
  
• The excretion of uric acid requires the least amount of water for it's elimination. Thus, it aids in water conservation.
• Biting and chewing type mouth parts of cockroach help to enhance their feeding efficiency and do not help in water conservation.

So, the correct option is 'Biting and chewing type of mouth parts'.