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41.

Name the animal, which exhibits the phenomenon of bioluminescence. Mention the phylum to which it belongs.

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42.

Differentiate between

Open and Closed circulatory system

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43.

Differentiate between

Oviparity and viviparity

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44.

Differentiate between

Direct and Indirect development

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45.

Differentiate between :

Acoelomate and Pseudocoelomate

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46.

Differentiate between

Polyp and Medusa

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Chondrichthyes	Osteichthyes
They have cartiligionous endoskeleton	They have bony endoskeleton
They have placoid scales	They have cycloid scales
e.g Scoliodon	e.g Rohu

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48.

Mention two similarities between
a. Aves and mammals
b. Frog and crocodile
c. Turtle and pila

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49.

Name

A limbless animal

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50.

Name

A cold-blooded animal

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