SaraNextGen Study App [2022-23]
Last Updated On 23-10-2022 - By Sara

All mammals without any exception are characterized by

a)

Viviparity and biconcave red blood cell

b)

Extra abdominal testis and four-chambered heart

c)

Heterodont teeth and 12 pairs of cranial nerves

d)

A muscular diaphragm and milk producing glands


Question ID - 341 :-

All mammals without any exception are characterized by

a)

Viviparity and biconcave red blood cell

b)

Extra abdominal testis and four-chambered heart

c)

Heterodont teeth and 12 pairs of cranial nerves

d)

A muscular diaphragm and milk producing glands

1 Answer
5876 Votes
3537

Answer Key : (c) -

(c)

In mammals the teeth are heterodont (i.e., consists of incisors, canines, premolar and molars) thecodont (in sockets of jaw bones). The brain has 12 pair of cranial nerves.



Next Question :

Which of the following is true about phylum-Platyhelminthes?

a)

They are mostly ectoparasites

b)

They are mostly free-living

c)

They are mostly commensals

d)

They are mostly endoparasites


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