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The Fundamental Unit of Life Exercises Solutions
- Q1: Make a comparison and write down ways in which plant cells are different from animal cells.
- Q2: How is a prokaryotic cell different from a eukaryotic cell?
- Q3: What would happen if the plasma membrane ruptures or breaks down?
- Q4: What would happen to the life of a cell if there was no Golgi apparatus?
- Q5: Which organelle is known as the powerhouse of the cell? Why?
- Q6: Where do the lipids and proteins constituting the cell membrane get synthesised?
- Q7: How does an Amoeba obtain its food?
- Q8: What is osmosis?
- Q9(i): Carry out the following osmosis experiment: Take four peeled potato halves and scoos 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: (i) Explain why water gathers in the hollowed portion of B and C.
- Q9(ii): Carry out the following osmosis experiment: Take four peeled potato halves and scoos 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: (ii) Why is potato A necessary for this experiment?
- Q9(iii): Carry out the following osmosis experiment: Take four peeled potato halves and scoos 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: (iii) Explain why water does not gather in the hollowed out portions of A and D.
- Q10: Which type of cell division is required for growth and repair of body and which type is involved in formation of gametes?
Chapters in CBSE - Class 9 Science
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