Phylum MCQs - Chapter 7

Echinoderms Multiple Choice Questions (MCQ) PDF - 4

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Echinoderms Questions & Answers PDF Download: MCQ Quiz 4

MCQ 16: The thin folds of the body wall that helps in gas exchange and extends in Ossicles are called

A) pedicellariae

B) dermal branchiae

C) disk

D) arms

MCQ 17: Nerve ring, nerve net, and radial nerves are collectively called

A) nerves

B) neurons

C) nervous system

D) neurosensory tissue

MCQ 18: The bilaterally symmetrical larva in the class Asteroidea is named as

A) bipinnaria larva

B) Muller's larva

C) planula

D) tadpole

MCQ 19: The locomotory organ in the brittle star is

A) its arms

B) water vascular system

C) muscles

D) tubes

MCQ 20: The strands of tissue, which run circularly around the mouth beside the ring canal, extends aborally into the arms, is termed as

A) circular muscles

B) hemal system

C) ringed structure

D) symmetry

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