The reptilian ancestors of mammals are

The largest order of the class Mammalia is

1. Rodentia

2. Carnivora

3. Cetacea

4. Insectivora

Both male and female pigeons secrete milk through

1. Salivary glands

2. Modified sweat glands

3. Crop

4. Gizzard

Sound box of birds is called

1. Pygostyle

2. Larynx

3. Syrinx

4. Synsacrum

Bird vertebrae are

1. Acoelous

2. Heterocoelous

3. Amphiocoelous

4. Procoelous

What is common between Ostrich, Penguin and Kiwi?

1. All are running birds

2. All are migratory birds

3. All are flightless birds

4. All are four toed birds

Long hollow bones connected by passages are characteristic of

1. Aves

2. Mammals

3. Amphibians

4. Reptiles

Hair occur in all mammals except those of the order

1. Rodentia

2. Chiroptera

3. Primata

4. Cetacea

An egg laying mammal is

1. Platypus

2. Koala

3. Kangaroo

4. Whale

Kidney of adult rabbit is

1. Pronephros

2. Mesonephros

3. Metanephros

4. Opisthonephros