Assertion (A) – In protists and monerans, cell division is itself a mode of reproduction.
Reason (R) – In these organisms, the parent cell divides to give rise to new individuals.
In the light of above statements, choose the correct answer from the options given below.
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) false
4. (A) is false but (R) is true
84%
From NCERT
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The common characteristics between tomato and potato will be maximum at the level of their:
1. Family
2. Order
3. Division
4. Genus
1. Family
2. Order
3. Division
4. Genus
Subtopic: Taxonomy 3: From Family to Classification of Some Organisms |
From NCERT
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ICZN stands for:
1. Indian Code for Zoological Nomenclature
2. Indian Council for Zoological Nomenclature
3. International Code for Zoological Nomenclature
4. International Council for Zoological Nomenclature
1. Indian Code for Zoological Nomenclature
2. Indian Council for Zoological Nomenclature
3. International Code for Zoological Nomenclature
4. International Council for Zoological Nomenclature
Subtopic: Taxonomy 1: Nomenclature |
90%
From NCERT
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Assertion (A): In single-celled organisms, we are not very clear about the usage of these two terms – growth and reproduction.
Reason (R): In unicellular organisms like bacteria, unicellular algae, or Amoeba, growth is synonymous with reproduction, i.e., an increase in the mass of cells.
Reason (R): In unicellular organisms like bacteria, unicellular algae, or Amoeba, growth is synonymous with reproduction, i.e., an increase in the mass of cells.
| 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. |
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Assertion(A): Classification helps in studying all living organisms.
Reason(R): It groups the organisms into convenient categories based on some easily observable characteristics.
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.
Reason(R): It groups the organisms into convenient categories based on some easily observable characteristics.
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: Diversity in the Living World |
86%
From NCERT
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Assertion(A): All categories together constitute the taxonomic hierarchy.
Reason(R): Category is a part of the overall taxonomic arrangement.
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.
Reason(R): Category is a part of the overall taxonomic arrangement.
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: Taxonomy 1: Nomenclature |
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Assertion (A): Reproduction cannot be an all-exclusive defining characteristic of living organisms but no nonliving object is capable of reproducing or replicating by itself.
Reason (R): All living organisms do not reproduce.
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): All living organisms do not reproduce.
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.
68%
From NCERT
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Assertion (A): The life is interesting and most surprised phenomenon of nature.
Reason (R): It's reflected by ecological conflict and cooperation among members of a population and among populations of a community or even the molecular traffic inside a cell.
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): It's reflected by ecological conflict and cooperation among members of a population and among populations of a community or even the molecular traffic inside a cell.
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: Diversity in the Living World |
75%
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In the classification of plants, the taxonomic unit ‘Division’ is equivalent to which taxonomic unit in the classification of animals?
| 1. | Order | 2. | Class |
| 3. | Phylum | 4. | Genus |
Subtopic: Taxonomy 2: Classification up to Genus |
92%
From NCERT
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Earth has amazing bio-diversity. The number of species on Earth that are known and described ranges between:
| 1. | 0.8 - 1.0 million | 2. | 1.7 - 1.8 million |
| 3. | 7 – 8 million | 4. | 20 – 50 million |
Subtopic: Diversity in the Living World |
92%
From NCERT
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