First slide

Classification of Animals

Question

In echinoderms, specialised excretory organs are

Easy

A

Malphigiam tubules
B

nephridia
C

proboscis glands
D

absent

Solution

In echinoderms, special excretory organs are absent. Excretory wastes diffuse out through respiratory surfaces such as tube feet.
Malpighian tubules - Arthropoda
Nephridia - Annelida
Proboscis gland - Hemichordata

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