Assertion (A): In phase contrast microscope, living cells and tissues can be studied without staining them.
Reason (R): Electron beam is used as a source of light in phase contrast microscope.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Introduction to Cell |
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Assertion (A): Like mitochondria, the chloroplasts are also double membrane bound. Of the two, the inner chloroplast membrane is relatively less permeable
Reason (R): Porins are present on inner membrane
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Reason (R): Porins are present on inner membrane
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Plastids | Mitochondria |
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Assertion (A): Cell is the fundamental structural and functional unit of all living organisms.
Reason (R): Because unicellular organisms can show independent existence and perform all metabolic activities.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Reason (R): Because unicellular organisms can show independent existence and perform all metabolic activities.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Introduction to Cell |
64%
From NCERT
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Assertion (A): True chromatin is absent in prokaryotes.
Reason (R): Mitosis does not occur in prokaryotes.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Reason (R): Mitosis does not occur in prokaryotes.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Prokaryotic Cell Organisation | Nucleus | Nucleus: Chromosomes |
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Assertion (A): Cedar wood oil is used as lens material in light compound microscope.
Reason (R): Refractive index of cedar wood oil is greater than the refractive index of glass
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Reason (R): Refractive index of cedar wood oil is greater than the refractive index of glass
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Prokaryotic Cell Organisation | Bacterial Staining & Shape |
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Assertion (A): Ribosomes are known as RNP particles.
Reason (R): Ribosomes are made of rRNA and proteins.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Reason (R): Ribosomes are made of rRNA and proteins.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Ribosome and Inclusion Bodies |
73%
From NCERT
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Assertion (A): Lysosomes are called ‘Suicidal bags’.
Reason (R): A large number of hydrolytic enzymes are present in lysosomes
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Reason (R): A large number of hydrolytic enzymes are present in lysosomes
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Lysosomes |
75%
From NCERT
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Assertion (A): Basal bodies are formed from centrioles.
Reason (R): Both basal bodies and centrioles have 9+2 structural organization.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Reason (R): Both basal bodies and centrioles have 9+2 structural organization.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Cytoskeleton | Cilia & Flagella |
56%
From NCERT
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Assertion (A): Mitochondria is known as power house of cell.
Reason (R): ATP production takes place here.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Reason (R): ATP production takes place here.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Mitochondria |
95%
From NCERT
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Unicellular organisms are capable of:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | independent existence |
| II: | performing the essential functions of life |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Introduction to Cell |
92%
From NCERT
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