Question

a ) where do the following functions occur?
(i) production of an egg
(ii) fertilisation
(iii) implantation of zygote.

b )what happens to the lining of uterus:
i) before release of a fertilised egg?

(ii)If no fertilisation occurs?​

Answer 1

Answer:

The egg is formed in the reproductive tract of a female chicken, called a hen. The reproductive tract is divided into two major parts: the ovary and the oviduct. The ovary is where the yolk is added. When the yolk reaches the right size, it is released from the ovary by a process called ovulation.

Fertilisation or fertilization, also known as generative fertilisation, insemination, pollination, fecundation, syngamy and impregnation, is the fusion of gametes to give rise to a new individual organism or offspring and initiate its development.

In humans, implantation is the stage of pregnancy at which the embryo adheres to the wall of the uterus. At this stage of prenatal development, the conceptus is called a blastocyst. It is by this adhesion that the embryo receives oxygen and nutrients from the mother to be able to grow.

Explanation:

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Answer 2

Answer:

a)

i) egg is produced and released by ovary

ii) fertilization occur at fallopian tube

iii) implantation occur at fundus of uterus

b)

i) before release of fertilised egg, the lining of uterus get thicken and vascularisation occur ,so that zygote can be implanted

ii) If no fertilization occur, the lining of uterus get shed , as blood , known as menses