Question

(i) What is fertilisation? Distinguish between external fertilisation and internal fertilisation.

(ii) What is the site of fertilisation in human beings?​

Answer 1

Answer:

the action or process of fertilizing an egg or a female animal or plant, involving the fusion of male and female gametes to form a zygote.

Internal fertilization occurs inside the body, whereas external fertilization happens outside the body. Fertilization is the process by which a sperm cell and an egg cell unite to form a completely new individual.

Human fertilization is the union of a human egg and sperm, usually occurring in the ampulla of the fallopian tube. The result of this union is the production of a zygote cell, or fertilized egg, initiating prenatal development.

Answer 2

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(i) Fertilisation is defined as the fusion of a male gamete (sperm) with a female gamete (an ovum or egg) to form a zygote during sexual reproduction.

(ii) External Fertilization :

▶️The fusion of male gamete (sperm) and female gamete (ovum) occurs outside the body

▶️Both individuals discharge their gametes outside the body.

▶️Development occurs outside the body.

▶️Example: Frog.

Internel Fertilization :

▶️The fusion of gametes occurs inside

the body.

▶️Only the male discharges sperms into female genital tract.

▶️Development occurs inside the body.

▶️Examples: Human, birds, cattle, etc.