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Q. No.Evolutionarily, the first terrestrial plants to possess vascular tissues – xylem and phloem, are:
1. Bryophytes
2. Pteridophytes
3. Gymnosperms
4. Angiosperms
Subtopic: Pteridophytes |
94%
From NCERT
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The leaves in pteridophyta are:
1. microphylls in Selaginella or macrophylls in ferns.
2. macrophylls in Selaginella or microphylls in ferns.
3. microphylls in Selaginella and ferns.
4. macrophylls in Selaginella and ferns.
1. microphylls in Selaginella or macrophylls in ferns.
2. macrophylls in Selaginella or microphylls in ferns.
3. microphylls in Selaginella and ferns.
4. macrophylls in Selaginella and ferns.
Subtopic: Pteridophytes |
88%
From NCERT
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In majority of the pteridophytes:
1. Both I and II are correct
2. Both I and II are incorrect
3. Only I is correct
4. Only II is correct
| I: | transfer of male gamete to the female gamete does not require water |
| II: | all the spores are of similar kinds |
1. Both I and II are correct
2. Both I and II are incorrect
3. Only I is correct
4. Only II is correct
Subtopic: Pteridophytes |
From NCERT
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The class of pteridophytes to which Selaginella belongs is:
1. Psilopsida
2. Sphenopsida
3. Lycopsida
4. Pteropsida
1. Psilopsida
2. Sphenopsida
3. Lycopsida
4. Pteropsida
Subtopic: Pteridophytes |
78%
From NCERT
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The giant redwood tree Sequoia, one of the tallest tree species, is a:
| 1. | Pteridophyte | 2. | Monocot angiosperm |
| 3. | Dicot angiosperm | 4. | Gymnosperm |
Subtopic: Gymnosperms |
89%
From NCERT
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The reduced male gametophyte in a gymnosperm is called a:
1. pollen grain
2. microsporangium
3. microsporophyll
4. antheridium
1. pollen grain
2. microsporangium
3. microsporophyll
4. antheridium
Subtopic: Gymnosperms |
74%
From NCERT
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Consider the two statements:
1. Statement I is correct; Statement II is incorrect
2. Statement I is incorrect; Statement II is incorrect
3. Statement I is correct; Statement II is correct
4. Statement I is incorrect; Statement II is correct
| Statement I: | The gymnosperms are plants in which the ovules are not enclosed by any ovary wall and remain exposed, both before and after fertilisation. |
| Statement II: | The seeds that develop post-fertilisation, are not covered, i.e., are naked. |
1. Statement I is correct; Statement II is incorrect
2. Statement I is incorrect; Statement II is incorrect
3. Statement I is correct; Statement II is correct
4. Statement I is incorrect; Statement II is correct
Subtopic: Gymnosperms |
90%
From NCERT
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The classification based on the premise that organisms belonging to the same taxa have a common ancestor is called as:
1. Cytotaxonomy
2. Phylogenetic system
3. Chemotaxonomy
4. Numerical taxonomy
1. Cytotaxonomy
2. Phylogenetic system
3. Chemotaxonomy
4. Numerical taxonomy
Subtopic: Classification System: I | Classification System: II | Classification System |
95%
From NCERT
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The form and size of algae is highly variable. Which of the following is/are correct?
| I: | Ulothrix is a colonial alga. |
| II: | Volvox is a filamentous alga. |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Subtopic: Algae | Chlorophyceae: Green Algae: I | Chlorophyceae: Green Algae: II | Chlorophyceae: Green Algae: III |
89%
From NCERT
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Reproduction involving fusion between one large, non-motile (static) female gamete and a smaller, motile male gamete is termed:
1. Isogamous
2. Agamous
3. Anisogamous
4. Oogamous
1. Isogamous
2. Agamous
3. Anisogamous
4. Oogamous
Subtopic: Algae |
89%
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