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Reproduction

Protists can reproduce both by asexual and sexual methods.

1. Asexual Reproduction:

This is the most common method of reproduction in protists. Asexual reproduction takes place in favourable condition. Asexual reproduction involves only one parent, the offspring produced by this method are all alike genetically to the parent and are termed as clones.

It is of following types

  • Binary fission: - Two daughter cells are formed by the division of
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Division - Chrysophyta/Bacillariophyta - Class - Bacillariophyceae – Diatoms

The members of Division - Bacillariophyta are known as Diatoms. Diatoms means-“Cut in to two”. This name is based on the cell wall of diatoms which is divided in to two parts. They have Holophytic mode of nutrition because they possess chloroplast.

Example of Diatoms - Navicula, Cyclotella, Pinnularia

  • Habitat: They are found in fresh water as well as in marine environments. They are microscopic and float passively in water

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