Question

In which of the following animals, the sperm can survive for a longer period in the body of a female?
A. Mammals
B. Aves
C. Reptilia
D. Amphibia

Answer 1

The fusion of male sperm and female eggs leads to fertilisation and production of babies. The fusion can be both internal inside the female body or external as in the case of fishes and frogs. In internal fertilisation, the male copulates the female and ejaculates sperm inside the female body.

Complete answer:
Internal fertilisation is the process which involves fertilisation inside the body of the female as in the case of mammals, birds. The sperm is released inside the body of the female where the fertilisation of the gametes takes place.
In the case of mammals- The mammals are viviparous that produce the young ones. The sperm is introduced inside the female body through copulation. The fertilisation takes place inside the female body and the fertilised gametes are protected inside the oviduct. The sperm can stay inside the body of the female for as many as 5 days. Example: human beings.
In the case of Aves- The birds reproduce by the process of internal fertilisation. The egg is fertilised in the body and the egg is produced. The sperm is introduced into the female body by the process of cloacal kiss. The sperms do not stay long in the birds.
Reptilia- Most of the reptiles like snakes have internal fertilisation. The male copulates with the female at the cloaca. The sperm can remain in the body of some reptiles like snakes for as long as five years.
Amphibia- The amphibia has external fertilisation. The sperm and the eggs are released outside mostly in water. When the two meet, fertilisation takes place.

Hence, the correct answer is option C.

Note –
The birds and reptiles have only one opening called the cloaca through which the exit of eggs, waste, entry of sperms takes place. In case of a cloacal kiss the male touches the female cloaca and brings about an exchange of sperm.