Class 11 Biology Animal Kingdom Phylum-Echinodermata

Medium

In $Echinodermata$,the excretory organ is .........

A
Well-developed and specific
B
General
C
Absent
D
None of these

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Class 11 Questions

Class 11

Biology Questions

Chapter

Animal Kingdom

Subtopic

Phylum-Echinodermata

Similar Questions

Match column-$I$ with column-$II$ :
Column-$I$ Column-$II$
$(i)$ Asterias $(a)$ Brittle star
$(ii)$ Echinus $(b)$ Sea lily
$(iii)$ Antedon $(c)$ Sea urchin
$(iv)$ Ophiura $(d)$ Star fish

Medium

Aristotle's lantern is found in the class .......... .

Which of the following is an invertebrate phylum?

Easy

Which organ system is lacking in the animals that bear a water vascular system?

Medium

The calcareous ossicles in echinoderms form the

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