Answered: Which is INCORRECT about sea urchins?…

Which is INCORRECT about sea urchins? A. Spines are movable B. Secondary spine is shorter a d solid C. Primary spine is long and hollow D. Tube feet assist the movement of the spines

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter23: Animals I: Major Invertebrate Groups

Section: Chapter Questions

Problem 3SA

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Concept explainers

Marine Evolution

Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.

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Which is INCORRECT about sea urchins?
A. Spines are movable
B. Secondary spine is shorter a d solid
C. Primary spine is long and hollow
D. Tube feet assist the movement of the spines

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