ZoologyThe following characters are applicable to which phylum?a) Hooks & suckers are present in parasitic forms.b) Some of them absorb nutrients from the host directly through their body surface.c) Fertilisation is internal and development is through many larval stages.

The following characters are applicable to which phylum?
a) Hooks & suckers are present in parasitic forms.
b) Some of them absorb nutrients from the host directly through their body surface.
c) Fertilisation is internal and development is through many larval stages.

A
Platyhelminthes
B
Aschelminthes
C
Annelida
D
Mollusca

Solution:

Phylum Platyhelminthes includes flatworms. In this phylum, hooks and suckers are present in the parasitic forms. Some of them (tapeworms) absorb nutrients from the host directly through their body surface. Others have an incomplete gut. Fertilisation is internal and development is through many larval stages.