Class Mammalia

Q. Mammals inhabit

1. forests and grasslands
2. deserts and mountains
3. polar ice caps and dark caves
4. all of these

Q. Which of the following are mammals?

1. Shark
2. Bat
3. Whale
4. Platypus

Q.

Which of the following is correct?

1. Camel has biconcave RBCs

2. Ornithorhynchus lays eggs

3. Rat has cloaca

4. Bat has feathers

Q. Dentition in mammals is

1. homodont
2. heterodont
3. monophyodont
4. polyphyodont

Q.

Which one of the following is oviparous?

1. Platypus

2. Flying fox (Bat)

3. Elephant

4. Whale

Q.

Pinnae are present in

1. Chamaeleon

2. Testudo

3. Hyla

4. Macropus

Q.

Which of the following is an oviparous mammal?

1. kangaroo

2. flying fox

3. blue whale

4. platypus

Q. Dolphins belong to the Class

1. Reptilia
2. Amphibia
3. Mammalia
4. Pisces

Q.

Which of the following is not a character common to all chordates?

1. notochord

2. gill slits

3. dorsal hollow nervous system

4. hair

Q.

A few unique features of mammals are listed here. Pick the incorrect one(s).

I. Body is covered with skin and hair which are thermoregulatory in function.

II. All mammals give birth to a fully developed infant after gestation.

III. Feeds the infant with milk from modified sweat glands.

IV. All mammals are not viviparous.

1. II

2. III

3. IV

4. I