Assertion (A):
Mitochondria, ER are largest organelle in an animal’s cell.
Reason (R):
Mitochondria, Chloroplast are semiautonomous cell organelles.
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 | Endomembrane System (Endoplasmic Reticulum) |
80%
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Assertion (A): Cell is the fundamental structural and functional unit of all living organisms.
Reason (R): Anything less than a complete structure of a cell does not ensure independent living
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): Anything less than a complete structure of a cell does not ensure independent living
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 |
91%
From NCERT
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| 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. |
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. |
Subtopic: Introduction to Cell |
65%
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. |
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. |
Choices for Assertions and reasons:
| 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. | (A) is false, but (R) is true. |
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. |
Subtopic: Ribosome and Inclusion Bodies |
75%
From NCERT
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| Assertion (A): | Lysosomes are called ‘Suicidal bags’. |
| Reason (R): | Lysosomes are called ‘Suicidal bags’. |
| 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 |
76%
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. |
Subtopic: Cytoskeleton | Cilia & Flagella |
59%
From NCERT
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