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Q. No.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 |
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Consider the given two statements:
| Assertion (A): | The artificial systems used for classification of living organisms are not very acceptable to taxonomists. |
| Reason (R): | The artificial systems give more weightage to vegetative characteristics and no weightage to sexual characteristics and the sexual characteristics are easily affected by environment. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are False. |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are True but (R) does not correctly explain (A). |
Subtopic: Classification System |
76%
From NCERT
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How many of the given statements are correct regarding economic importance of algae?
1. 1
2. 2
3. 3
4. 4
| I: | Many species of Porphyra, Laminaria and Sargassum are used as food. |
| II: | Hydrocolloids (water holding substances), e.g., algin from red algae and carrageen from brown algae are used commercially. |
| III: | Agar is obtained from Gelidium and Gracilaria. |
| IV: | Chlorella a unicellular alga rich in proteins is used as food supplement. |
1. 1
2. 2
3. 3
4. 4
Subtopic: Algae |
69%
From NCERT
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The bryophytes are also called as the amphibians of plants kingdom mainly because:
1. they respire through the moist epidermis
2. they depend on water for sexual reproduction
3. they require more water than most plants
4. they lack true roots
Subtopic: Bryophytes |
95%
From NCERT
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Which characteristic feature is common to both Bryophytes and Pteridophytes?
1. Presence of flowers
2. Production of seeds
3. Dependence on water for fertilization
4. Presence of vascular tissues
1. Presence of flowers
2. Production of seeds
3. Dependence on water for fertilization
4. Presence of vascular tissues
Subtopic: Bryophytes | Pteridophytes |
95%
From NCERT
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The classification system given by Bentham and Hooker is a/an:
| 1. | Artificial system | 2. | Natural system |
| 3. | Phylogenetic system | 4. | Useless system |
Subtopic: Classification System |
84%
From NCERT
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Consider the given two statements:
| Statement I: | All algae contain chlorophyll a as the primary photosynthetic pigment. |
| Statement II: | All algae reproduce sexually by the production of spores. |
| 1. | Both Statement I and Statement II are true |
| 2. | Statement I is true but Statement II is false |
| 3. | Statement I is false but Statement II is true |
| 4. | Both Statement I and Statement II are false |
Subtopic: Algae |
66%
From NCERT
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Consider the given two statements:
| Statement I: | Ferns have small leaves called microphylls |
| Statement II: | Equisetum has strobili or cones |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Pteridophytes |
56%
From NCERT
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Pyrenoids contain:
1. Protein and starch
2. Starch and lecithin
3. Lecithin and albumen
4. Protein and nucleic acids
1. Protein and starch
2. Starch and lecithin
3. Lecithin and albumen
4. Protein and nucleic acids
Subtopic: Chlorophyceae: Green Algae |
90%
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In mosses, spores:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I nor II are incorrect
| I: | are contained in capsule |
| II: | undergo meiosis |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I nor II are incorrect
Subtopic: Bryophytes |
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