Q8 of 525 Page 233

Write any three differences between Amphibia and Mammalia belonging to kingdom Animalia.

Differences between Amphibia and Mammalia:



















Amphibia



Mammalia



These are cold-blooded animals.



These are warm-blooded animals.



Fertilisation is external.



Fertilisation is internal.



They have three-chambered heart.



They have four chambered heart.




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6

(i) Draw a neat diagram of Hydra.

(ii) Label mesoglea and gastrovascular cavity


(iii) Name the group of animals it belongs to.


(iv) Name one species of this group that lives in colonies.

 7

Define the terms and given one example of each

(i) Bilateral symmetry; (ii) Coelom; (iii) Triploblastic.

 9

Picks the odd one out and justify your choice by giving reasons.

(a) Moss, Fern, Pinus, Spirogyra.


(b) Sea cucumber, Octopus, Feather star, Star fish

 10

In the given classification scheme fill in the boxes with appropriate plant groups:

(diagram)