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Page No 63: - Chapter 5 - The Fundamental Unit Of Life - Ncert Solutions class 9 - Science

Updated On 26-08-2025 By Lithanya


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Question 1:

Fill in the gaps in the following table illustrating differences between prokaryotic and eukaryotic cells.

 

Prokaryotic cell

 

Eukaryotic cell

1.

Size: generally small ( 1-10 µm) 1 µm== 10-6 m

1.

Size: generally large (5-100 µm)

2.

Nuclear region: _____________________________ and is known as ________.

2.

Nuclear region: well-defined and surrounded by a nuclear membrane

3.

Chromosome: single

3.

More than one chromosome

4.

Membrane-bound cell organelles are absent

4.

________________________________________________________________________________________________

 

Answer:

 

Prokaryotic cell

 

Eukaryotic cell

1.

Size: generally small ( 1-10 µm) 1 µm== 10-6 m

1.

Size: generally large (5-100 µm)

2.

Nuclear region: poorly defined because of the absence of a nuclear membrane, and is known as nucleoid

2.

Nuclear region: well-defined and surrounded by a nuclear membrane

3.

Chromosome: single

3.

More than one chromosome

4.

Membrane-bound cell organelles are absent

4.

Membrane-bound cell organelles such as mitochondria, plastids, etc., are present