Last seen: May 7, 2021
In hens, soon after fertilisation, the zygote divides repeatedly and travels down oviduct. As it travels down, many protective layers are formed aroun...
Diagram to show the formation of embryo from zygote 2s.png
The process of fertilisation is the meeting of an egg cell from the mother and a sperm cell from the father. So, the new individual inherits some char...
Cloning is the production of an identical cell, any other living part or a complete organism.
The two modes of reproduction are (i) sexual reproduction (ii) asexual reproduction.
Reproduction is essential as it ensures the continuation of similar kinds of individuals, generation after generation.
Reproduction means producing new individuals of the same kind.
Asexual reproduction is the reproduction in which only a single parent is involved. The two methods of asexual reproduction are Budding in whic...
1. Scrotal sac is a sac in which the testis are placed. 2. Vas deferens or sperm duct carry the sperms from the testis to the uretra. 3. The penis...
1. Zygote 2. Cloning. 3. Metamorphosis.
The process is known as cloning. 2s.png
Yes, sometimes the technique of ultrasound can be misused. It can be used to identify the sex of the foetus which may lead to foeticide.
Yes, it is possible to find out whether the foetus is healthy or not by using an ultrasound machine.
The embryo develops in the uterus. It gradually develops the body parts such as hands, legs, head, eyes, ears, etc. This stage of the embryo in which ...
These animals lay hundreds of eggs but all the eggs do not fertilise and develop into new individuals. The eggs get exposed to water movement, wind an...
During rainy season, frogs and toads move to ponds. When the male and female come together in water, the female lays hundreds of eggs. A layer of jell...
Human female reproductive system 2s.png
Human male reproductive system 2s.png
During fertilisation, the nuclei of the sperm and the egg fuse to form a single nucleus. This results in the formation of the fertilised egg or zygote...
Fusion of male sperms and female ova is called fertilisation.External fertilisation: When male gamete fuses with the female gamete outside the body ...