Q2 of 360 Page 116

What is prokaryotic cell?

A Prokaryotic cell is primitive in organisation. These cells do not have well organised nuclear region due to absence of nuclear membrane. These cells lake various membrane bound organelles like mitochondria, lysosome, endoplasmic reticulum, etc. E.g., bacteria and blue green algae.


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9

Name the phenomenon which helps fresh water unicellular organisms (e.g. Amoeba) continuously gain water in their bodies. Also, name the mechanisms by which these organisms throw out excess of water from their bodies.

(b) Give at least two examples in plants where similar phenomenon in used to gain water.

 1

What is cell?

 3

What is eukaryotic cell?

 4

Who coined the term cell?