Homeothermy is exhibited by:

1. All amniotes

2. Birds and Mammals

3. All deuterostomes

4. Reptiles and Mammals

Consider the following characters:

I. Wish bone furculum

II. Pneumatic bones

III. Feathers

IV. Endothermy

V. Left aortic arch

VI. Four chambered heart

Which of these are unique to birds?

1. I, II and III only

2. I, II, III and IV only

3. I, II, III, IV and V only

4. All

Identify the incorrectly matched pair:

Birds are not characterized by:

1. Forelimbs modified into wings

2. Fully ossified endoskeleton

3. Skin dry without glands except for oil gland

4. Oviparous and external fertilization

Pteropus is a/an:

Which of the following represents order of 'Horse'?

(1) Equidae

(2) Perissodactyla

(3) Caballus

(4) Ferus

Which among these is the correct combination of aquatic mammals?

(1) Seals, Dolphins, Sharks

(2) Dolphins, Seals, Trygon

(3) Whales, Dolphins, Seals

(4) Trygon, Whales, Seals

Which one of the following characteristics is not shared by birds and mammals?

(1) Breathing using lungs

(2) Viviparity

(3) Warm blooded nature

(4) Ossified endoskeleton

Which one of the following in birds, indicates their reptilian ancestry?

(1) Scales on their hind limbs

(2) Four chambered heart

(3) Two special chambers crop and gizzard in their digestive tract

(4) Eggs with a calcareous shell

What is common between parrot, platypus and kangaroo?

(1) Homeothermy

(2) Toothless jaws

(3) Functional post-anal tail

(4) Oviparity