Ques 1.

Make a flow chart to show how animals can be classified according to their level of organisation, symmetry, germ layers and developmental patterns

Ques 2.

Define bilateral symmetry. What are the advantages that bilaterally symmetrical animals have over radially symmetrical animals?

Ques 3.

Describe the characteristic features of Cnidarians.

Ques 4.

What do you mean by polymorphism? Expalin the functions of various polymorphic forms of Hydrozoa.

Ques 5.

What is parasitic adaptation? Explain the adaptations that have taken place in Ascaris lumbricoides.

Ques 6.

Book lungs of Arachnida

Ques 7.

Pectines of scorpions

Ques 8.

What are the characteristics of echinderms that are unique to them and not found in other phyla?

Ques 9.

Describe the water vascular system of a seastar.

Ques 10.

Give one word/short answer for the following:
i) Give one prominent difference between sharks and rays.
ii) What kind of tail characterises elasmobranchs?
iii) In what way are sharks well adapted for predatory life habit?
iv) What is the function of the lateral line system in elasmobranchs?
v) How is the Chimera different from sharks and rays?

Ques 11.

Describe parental care in amphibians

Ques 12.

Distinguish between anurans and urodeles

Ques 13.

What are the three main reptile lines that evolved from the amniotes during the Mesozoic era and from which lineage did the present day reptiles evolve? How would you distinguish among the anapsid, diapsid and synapsid types of skull.

Ques 14.

The special adaptations of birds all contribute to two factors essential for flight namely, more power and less weight. Explain how each of the following contributes to one or the other or both:
(i) Endothermy
(ii) Respiratory system

(iii) Skeleton system

(iv) Excretory system.

Ques 15.

List and give one function of the four glands of the skin

Ques 16.

Differentiate between horns and antlers and give an example each of an animal with horn and an antler.