NEET BIOLOGY

REPRODUCTION

SEXUAL REPRODUCTION IN FLOWERING PLANTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The joining of an egg cell and a sperm cell is called ____
A
pollination
B
fertilization
C
seed dispersal
D
germination
Explanation: 

Detailed explanation-1: -The process in which union of male and female gametes (formed by gametogenesis) and fusion of pronuclei of sperm and egg (ovum) takes place is called fertilization. The resultant product of fertilization is called zygote.

Detailed explanation-2: -fertilization, union of a sperm nucleus, of paternal origin, with an egg nucleus, of maternal origin, to form the primary nucleus of an embryo.

Detailed explanation-3: -Contact between the egg and sperm is random. Once the egg arrives at a specific portion of the tube, called the ampullar-isthmic junction, it rests for another 30 hours. Fertilization-sperm union with the egg-occurs in this portion of the tube. The fertilized egg then begins a rapid descent to the uterus.

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