Which of the following organisms is having a two-chambered heart?

1

(a)

Frog

(b)

Cobra

(c)

Shark

(d)

Platypus

On the basis of which character it can be said that bats do not belong to Aves?

1

(a)

Ability to fly

(b)

Presence of mammary glands

(c)

both (a) and (b)

(d)

None of the above

How many chambers are there in the heart of a crocodile?

1

(a)

2

(b)

3

(c)

4

(d)

5

Which type of excretion is present in fishes?

1

(a)

Ammonotelic

(b)

Ureotelic

(c)

Urecotelic

(d)

None of these

Urecotelic excretion is found in which of the following pairs of animals?

1

(a)

Frogs and Crows

(b)

Lizards and Sparrow

(c)

Chimpanzee and Kangaroo

(d)

Bats and Crows

Name an animal having canal system and spicules.

1

(a)

Scypha(sycon)/Leucosolenia

How important is the presence of air bladder in Pisces?

1

(a)

In fishes, air bladder regulates buoyancy and helps them in floating in water.If it is absent, animals need to swim constantly to avoid sinking

What kind of body scales are present in bony

1

(a)

Ctenoid or cycloid scales

Segmentation in the body is first observed in 

1

(a)

In Platyhelminthes, true segmentation is absent but pseudosegmentation is seen,which is reduced by repeated budding or strobilation.

Pseudometamerism is found in...........

1

(a)

tapeworms

Difference between the complete and incomplete digestive system.

1

(a)

Distinguish between intracellular and extracellular digestion?

1

(a)

What is the difference between direct and indirect development?

1

(a)

There has been an increase in the number of chambers in heart during evolution of vertebrates.Give the name of the class of vertebrates having two, three or four - chambered heart

1

(a)

Provide the appropriate technical term for blood-filled cavity in arthropods and lateral appendages in aquatic annelids.

1

(a)

What is the key feature of Reptilia?

2

(a)

What is the major difference between coelomates and acoelomates?

2

(a)

Define notochord

2

(a)

What is the name of the opening through which the water moves out of the body of a sponge?

2

(a)

What is a cnidoblast?

2

(a)

What are the different habitats of molluscs? Give with examples.

3

(a)

Write an account on skeleton of sponges.

3

(a)

Justify that annelids are evolutionary precursors of molluscs.

3

(a)

List out any six general features of cartilaginous fishes

3

(a)

Which is the first phylum showing a closed circulatory system? What are the advantages of a closed circulatory system over open circulatory system?

3

(a)

Write an account of general features of roundworms.

5

(a)

Describe phylum Coelenterata. Give suitable examples.

5

(a)