First slide

Classification of Animals

Question

Consider following phylums
A. Cnidaria
B. Ctenophora
C. Platyhelminthes
D. Aschelminthes
Choose the correct option regarding them.

Moderate

A

A & B have cnidoblast for defense
B

C & D are endoparasites mostly and show internal fertilisation
C

A, C & D are monoecious
D

B & C show organ system level of organisation

Solution

Platyhelminthes and aschelminthes are both mostly endoparasites and they show internal fertilisation.
Cnidoblasts are absent in Ctenophora.
Aschelminthes exhibits sexual dimorphism.
Ctenophora exhibits tissue level of organisation.

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