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The Fundamental Unit of Life Class 9 NCERT solutions

CH-3 Atoms and Molecules Class 9  The Class 9 Science Chapter 2 NCERT answers are all available here. This solution includes all of the material covered in Class 9’s Chapter 2: Is Matter around us Pure NCERT Solutions of Science, including questions, answers, illustrations, and step-by-step instructions. If you are a ninth-grade student studying science using the NCERT Textbook, you have probably encountered Chapter 1: Matter in Our Surroundings. You should be searching for the solutions to the questions after studying the lecture. All of the Class 9 Ch-2 Is Matter around us Pure NCERT Solutions are available right here. You should also refer to the Science class notes for Chapter 2 Is Matter around us Pure NCERT Solutions for a deeper understanding of this chapter.

 

NCERT Solution The Fundamental Unit of Life Class 9 NCERT Solutions Chapter 3 Intext Questions

NCERT Solution The Fundamental Unit of Life Class 9
Page Number: 51
Question 1
Who discovered cells, and how ?
Answer:

Question 2

Why is the cell called the structural and functional unit of life ?
Answer:
NCERT Solution The Fundamental Unit of Life Class 9
NCERT Solution The Fundamental Unit of Life Class 9
Page Number: 53
Question 1 
How do substances like CO2 and water move in and out of the cell? Discuss.
Answer:
Question 2
Why is the plasma membrane called a selectively permeable membrane?
Answer:
NCERT Solution The Fundamental Unit of Life Class 9
Page Number: 55
Question 1

Fill in the gaps in the following table illustrating differences between prokaryotic and eukaryotic cells
NCERT Solutions for Class 9 Science Chapter 5 The Fundamental Unit of Life 1

Answer:
NCERT Solution The Fundamental Unit of Life Class 9
NCERT Solution The Fundamental Unit of Life Class 9
Page Number: 57
Question 1

Can you name the two organelles we have studied that contain their own genetic material?

Answer:
Question 2

If the organisation of a cell is destroyed due to some physical or chemical influence, what will happen?

Answer:

Question 3

Why are lysosomes known as suicide bags?

Answer:

Question 4

Where are proteins synthesised inside the cell?

Answer:

NCERT Solution The Fundamental Unit of Life Class 9 Exercise Questions (Textbook Chapter End Questions)

NCERT Solution The Fundamental Unit of Life Class 9
Page Number: 59

Question 1

Make a comparison and write down ways in 2. which plant cells are different from animal cells.

Answer:
Question 2

How is a prokaryotic cell different from a eukaryotic cell?

Answer:

Question 3

What would happen if the plasma membrane ruptures or breaks down?

Answer:
Question 4
What would happen to the life of a cell if there was no Golgi apparatus?
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Question 5
Which organelle is known as the power house of the cell? Why?
Answer:
Question 6
 Where do the lipids and proteins constituting the cell membrane get synthesised?
Answer:
Question 7

How does an Amoeba obtain its food?

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Question 8
What is osmosis?
Answer:
Question 9

Carry out the following osmosis experiment. Take four peeled potato halves and scoop each one out to make potato cups. One of these potato cups should be made from a boiled potato. Put each potato cup in a trough containing water. Now
(a) Keep cup A empty
(b) Put one teaspoon sugar in cup B
(c) Put one teaspoon salt in cup C
(d) Put one teaspoon sugar in the boiled potato cup D.
Keep these for two hours. Then observe the four potato cups and answer the following

  1. Explain why water gathers in the hollowed portion of B and C.
  2. Why is potato A necessary for this experiment?
  3. Explain why water does not gather in the hollowed out portions of A and D.
Answer:
Question 10

Which type of cell division is required for growth and repair of body and which type is involved in formation of gametes?

 
Answer:

Exploring Atoms and Molecules Together

Key Concepts in Science
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Structure of Atoms
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Properties of Molecules
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Atomic Relationships
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