Question

explain events of pre-fertilisation for 3 marks question
pls answer it quickly. ..........
best answer will be marked as brainliest. .......

Answer 1

Pre-fertilization events of sexual reproduction involves two major events, namely, gametogenesis and gamete transfer.
1....Gametogenesis

The process of formation of gametes is called gametogenesis. In sexual reproduction, there are two types of gametes, namely, male gametes and female gametes.(Mitosis or meiosis:-All gametes are haploid in nature. However, this does not mean that the parental body that produces these gametes are also haploid in nature. The parental body that produces these gametes might be haploid or diploid in nature.)
2.....Gamete transfer


This is the second and final event of the first stage of sexual reproduction, that is pre-fertilization events. Gamete transfer is the process of bringing together, the two different types of gametes.

Answer 2

Pre-fertilisation events: 

It involves gametogenesis and gamete transfer

#Gametogenesis: It is the process of formation of the male gamete (sperm) in the testes of male and female gamete (egg or ova) in the ovaries of female.

#Gamete transfer: It is the transfer of one gamete to another to facilitate fertilisation. In humans the male ejaculates the sperm through penis into the vagina of the female.

#Fertilisation (Syngamy)
It is the process of fusion of the male and female gametes to form a diploid zygote. The fusion of male and female gametes in humans takes place inside the oviduct of female.

#Post-fertilisation events
It includes the formation of the zygote and the formation of the embryo.
Zygote: It is formed after the fusion of the haploid male and female gametes inside the women.

#Embryogenesis: Process of development of the embryo from the diploid zygote.

#The embryo under goes cell division and cell differentiation to develop into a baby inside the womb of the mother.