Q. Read the following statements carefully:
. Hooks and suckers are present in parasitic forms
. Some of them absorb nutrients from the host directly through their body surface
. Fertilisation is internal and development is through many larval stages
Here we are talking about:

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Solution:

• Hooks and suckers are present in parasitic forms.
• Some of them absorb nutrients from the host directly through their body surface.
• Fertilisation is internal and development is through many larval stages.
Here we are talking about Platyhelminthes.