Class Mammalia

Q.

One of the following is not a characteristic of chordates, i.e., the presence of

1. hair

2. gill slits

3. notochord

4. dorsal hollow nervous system

Q. The scientific name of the largest animal on earth

1. Elephas
2. Delphinus
3. Panthera
4. Balaenoptera

Q.

Identify the chondrichthyes fishes in the figure below.

1. 1.- Trygon , 2.- Scoliodon, 3- Pristis, 4- Carcharodon.

2. 1.- Pristis, 2.- Carcharodon, 3- Trygon , 4- Scoliodon.

3. 1.- Scoliodon, 2.- Pristis, 3- Carcharodon, 4- Trygon .

4. 1.- Carcharodon, 2.- Trygon , 3- Scoliodon, 4- Pristis.

Q. The name Mammalia is given to a class

1. due to the presence of mammary glands
2. due to a well-developed brain
3. due to the presence of jointed appendages
4. due to the presence of hair

Q. Presence of is a unique characteristic of mammals.

1. mammary gland
2. two pairs of limbs
3. 4 chambered heart
4. ovipary

Q. Ornithorhynchus is a

1. Monotreme mammal
2. Dinosaur
3. Fossil bird
4. Duck

Q. Which one of the following animals is correctly matched with its taxonomic category?

1. Cuttle fish - Mollusca, a class
2. Humans - Primata, the family
3. Housefly - Musca, an order
4. Tiger - Tigris, the species

Q. Assertion: Bats and whales are classified as mammals.
Reason: Bats and whales have four chambered heart.

1. Both Assertion and Reason are true and Reason is the correct explanation of Assertion
2. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
3. Assertion is true but Reason is false
4. Both Assertion and Reason are false

Q. Mammary glands of eutherians are modified.

1. Sweat glands
2. Oil glands
3. Sebaceous glands
4. None of the above

Q. Read the given statements and select the correct option.
(a) Sustained muscle contraction due to lack of relaxation between successive stimuliis called tetanus.
(b) The vertebral column of all mammals have seven cervical vertebrae.
(c) Production of erythrocytes is a function of skeletal system.

1. (a) and (b) are true but (c) is false
2. (b) and (c) are true but (a) is false
3. (a) and (c) are true but (b) is false
4. (a), (b) and (c) are true

Q. Mammary glands are functional in male and female both, in the order of

1. Prototheria
2. Metatheria
3. Eutheria
4. All of the above

Q.

explain nterphase of meiosis?

Q. Guinea pigs used in medical research are

1. Stocky and brown in colour
2. Rodents
3. Found In Asia only
4. Black swine

Q. Which among the following are exclusively viviparous?

1. Lamprey
2. Hippocampus
3. Sharks
4. Whales

Q. Mammals giving rise to immature young ones and nursing them in a pouch are

1. Marsupials
2. Monotremes
3. Primates
4. Carnivores

Q. Mammary glands are without teats in

1. Prototheria
2. Theria
3. Metatheria
4. Eutheria

Q.

Pinnae are present in

1. Hyla

2. Chameleon

3. Testudo

4. Macropus

Q.

Which one of the following is oviparous?

1. Platypus

2. Flying fox (Bat)

3. Elephant

4. Whale

Q. Which part of our central neural system acts as a master clock?

Q. Bat is a member of order

1. Chiroptera
2. Hymenoptera
3. Lagomorpha
4. Urodela

Q. Amongst the following mammals which of the following is a monotreme?

1. Macropus (Kangaroo)
2. Ornithorhynchus (Platypus)
3. Elephas (Elephant)
4. Balaenoptera (Blue whale)