NEET Solved Paper 2016 Question 34

Question: Which of the following features is not present in Periplaneta americana?

Options:

A) Schizocoelom as body cavity

B) Indeterminate and radial cleavage during embryonic development

C) Exoskeleton composed of N - acetylglucosamine

D) Metamerically segmented body

Show Answer

Answer:

Correct Answer: B

Solution:

  • Periplaneta americana, being an arthropod, exhibits determinate and spiral cleavage during embryonic development, not indeterminate and radial cleavage. Indeterminate and radial cleavage is characteristic of deuterostomes, such as echinoderms and chordates.