AIIMS2018Zoology-Biology
AIIMS 2018 Zoology Biology MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Which among the following belong to same phyla?
A
Physalia, obelia, Pleurobranchia – Coelenterata
B
Bombyx, Palaemon, Limulus – Arthropoda
C
Star fish, jelly fish, Sea urchin – Echinodermata
D
Cuttle fish, devil fish, Patella – mollusca
Correct Answer
Option A
Detailed Explanation
The correct answer is A) Physalia, Obelia, Pleurobranchia – Coelenterata because all three organisms are part of the phylum Cnidaria (formerly known as Coelenterata), which includes jellyfish, corals, and sea anemones, characterized by their gelatinous bodies and specialized stinging cells called cnidocytes. The other options contain organisms from different phyla, making A the only correct choice where all listed organisms belong to the same phylum.
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