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Porifera

How do organi...

Question

How do organisms of Porifera differ from those of Cnidaria ?

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Solution

Characteristics of Porifera:
(i) Cellular level of organisation.
(ii) Digestion is intracellular.
(iii) Appendages are absent in poriferans.

Characteristics of Cnidaria:
(i) Tissue level of organisation.
(ii) Digestion is both extracellular and intracellular.
(iii) They have appendages in the form of tentacles.

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Ascaris, Taenia, Sycon, Spongilla, Pleurobrachia, Fasciola, Ctenolana, Wuchereria, Planaria, Admasia

How many of the given organisms belong to Porifera, Cnidaria, Ctenophore, Platyhelminthes and Aschelminthes?

Options	Porifera	Cnidaria	Ctenophora	Platyhelminthes	Aschelminthes
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(c)	$2$	$1$	$2$	$3$	$2$
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