Theory:

Production of a new organism from an existing organism (parent organism) of the same kind is called reproduction.
The process involves the creation of a neworganism that is essential for the survival of a particular species.
Reproduction is necessary for the continuation of the species to maintain the continuity of the species across various generations. The new organism is called the young one.
Example:
Cats reproduce by giving birth to kittens. Dogs reproduce to give birth to puppies, and hens reproduce to give birth to chicks.
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Reproduction and it's types:
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Types of reproduction
 
The two modes of reproduction are :
  1. Sexual reproduction
  2. Asexual reproduction
Sexual Reproduction:
Production of a living organism by the fusion of gametes or sex cells is called sexual reproduction.
The two gametes - male and female gamete fuses together to form a new cell called the zygote. Zygote grows and develops into a new organism. The male and female parents have male and female reproductive organs that produce the male and female sex cells or gametes.
 
In a male, the gametes or the sex cells are called sperms, while the female gametes or the sex cells are called eggs or ovum.
Example:
Dog, cat, fish, frog, and humans reproduce through sexual reproduction.
Asexual Reproduction:
Production of a new offspring that involves only a single parent without the involvement of sex cells is called asexual reproduction.
It is called asexual reproduction as it does not involve the sex cells for the production of a new organism. The young ones that are produced is an exact copy of the parent.
Example:
Binary fission in Amoeba and Euglena
Budding in Hydra and Yeast
Spore formation in Fungi like Mushroom
Fragmentation in Spirogyra and Planaria
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Different forms of asexual reproduction: Binary fission, Budding, Fragmentation, Spore formation, Regeneration
Reference:
https://upload.wikimedia.org/wikipedia/commons/thumb/b/b1/White_cat_and_kitten.jpg/512px-White_cat_and_kitten.jpg
https://pixahive.com/photo/a-dog-and-puppy/
Reference:
https://upload.wikimedia.org/wikipedia/commons/4/49/Binary_Fission.png
https://commons.wikimedia.org/wiki/File:Disk-Independent_Bidirectional_Regeneration.png
https://www.flickr.com/photos/lynnfriedman/34296658593/in/photostream/