Question

Which of the following system are well-developed in parasitic animals?

• A. Digestive system
• B. Respiratory system
• C. Reproductive system
• D. All of the above

Answer 1

Answer: (C)

Reproductive system

• A parasite remains in close contact with its host. It depends on the host for its food and is unable to live a free life for a very long. Hence, they have lost their power of locomotion, their sense organs are reduced, their gut may be reduced or absent. Hence their digestive and respiratory systems will be underdeveloped.
• The reproductive system is usually well developed in the parasites. In order to survive, they inject into the new host and reproduce vigorously. The greater the number of offspring the better is the chance of host infection.

So, the correct answer is option C.