The functional kidney of frog tadpole is

1.	Archinephros	2.	Pronephros
3.	Mesonephros	4.	Metanephros

Presence of gills in tadpole of frog indicates that

A post anal tail is found in

(1) Scorpion

(2) Earthworm

(3) Snake

(4) Lepisma

Typhlos is

1. Sea snake

2. Glass snake

3. Blind snake

4. Grass snake

Flight muscles of birds are attached to

1. Clavicle

2. Keel of sternum

3. Scapula

4. Coracoid

Wish bone of birds is from

1. Pectoral girdle

2. pelvic girdle

3. Skull

4. Limbs

The muscles of a chordate are

1. All striated

2. All involuntary

3. Derived from embryonic mesoderm

4. Arranged in segmented blocks

Which of the following chordates has the combination of most primitive characters amongst the following?

(1) A larva of tunicates

(2) Tadpole

(3) Cartilaginous fishes

(4) Lancelets

Which of the following extraembryonic membranes stores waste?

1. Amnion

2. Chorion

3. Allantois

4. Yolk sac

The reptilian ancestors of mammals are