Water vascular system is the characteristic of which group of the following:

1

(a)

Porifera

(b)

Ctenophora

(c)

Echinodermata

(d)

Chordata

In which of the following organisms sexes are not separate?

1

(a)

Ascaris

(b)

Cockroach

(c)

Pheretima

(d)

Pila

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

In some animal groups, the body is found to be divided into compartments with at least some organs/organ repeated. Name this characteristic feature.

1

(a)

It is the segmentation that simultaneously divides body both externally and internally and is also called metamerism.

Body cavity is the cavity present between the body wall and gut wall. In some animals, the body cavity is not lined by mesoderm, Such animals are called ______.

1

(a)

Pseudocoelomates.

Name two non-chordate phyla, where animals are radially symmetrical.

1

(a)

Cnidaria and Echinodermata

Can you name the animal phyla, whose embryos have two germ layers?

1

(a)

Porifers and coelenterates

Why are echinoderms considered closer to chordates than any other phylum?

1

(a)

Because like chordates they are also deuterostomes where the anal region develops earlier than the mouth part.