Q84 of 525 Page 254

Name the following :

(a) Simplest sponges;


(b) Commonly known as bath sponge.

(a) Leucosolenia (Simplest sponge); (b) Euspongia (bath sponge)


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Name the following:

(a) Cavity present in the body of sponges.


(b) Cavity present in the body of cnidarians

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What is the skeleton of sponges made up of?

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Write down two unique characters of Porifera.

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What is the name of gelatinous layer existing between two germ layer of Cnidaria?