MCQs on Morphology of Rat

Rats are rodents possessing long tails and are typically medium sized. Usually they are differentiated from mice due to the size attribute, rats are large muroid rodents while mice/mouse is smaller. However, rats and mice, the common terms are not specific in terms of taxonomy.

1. Common brown rat is

(a) Rattus norvegicus

(b) Rattus meltada

(c) Rattus rattus

(d) Bandicota bengalensis

Answer: (a)

2. Three parts of the limb of a rat from the proximal to the distal end are

(a) stylopodium, autopodium and zeugopodium

(b) zeugopodium, autopodium and stylopodium

(c) stylopodium, zeugopodium and autopodium

(d) autopodium, zeugopodium and stylopodium

Answer: (c)

3. Scales in rats are present on

(a) hindlimbs

(b) head

(c) forelimbs

(d) tail

Answer: (d)

4. These teeth are not found in rats

(a) canines and premolars

(b) incisors and premolars

(c) incisors and molars

(d)canines and molars

Answer: (a)

5. Diastema are found in

(a) man

(b) rat

(c) both

(d) none of the above

Answer: (b)

6. Vibrissae are ___________ in function

(a) Gustatory

(b) Auditory

(c) Tactile

(d) Olfactory

Answer: (c)

7. This is present in a rat and not in a frog

(a) stomach

(b) jejunum

(c) ileum

(d) duodenum

Answer: (b)

8. In the body of a mammal, the largest gland is

(a) Pituitary

(b) Pancreas

(c) Liver

(d)Thyroid

Answer: (c)

9. This is the most important mammalian character of rat

(a) Diaphragm

(b) Pinna

(c) Hair

(d) Mammary glands

Answer: (d)

10. The close-set hair covering rat’s body is

(a) Pili tactiles

(b) Muzzle

(c) Pelage

(d) Vibrissae

Answer: (c)

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