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Q. No.What would be true regarding structures labelled as A and B in the given diagram of Funaria, a moss?
I:
A is the gametophyte and B is the sporophyte.
II:
The ploidy of cells in A will be haploid and the ploidy of cells in B will be diploid.
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Bryophytes |
70%
Level 2: 60%+
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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%
Level 1: 80%+
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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 |
88%
Level 1: 80%+
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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%
Level 1: 80%+
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Consider the two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | Green algae are usually grass green due to the dominance of pigments chlorophyll a and b. |
| Statement II: | Red algae vary in colour from olive green to various shades of brown depending upon the amount of fucoxanthin. |
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Chlorophyceae: Green Algae: I | Rhodophyceae: Red Algae and Importance of Algae |
82%
Level 1: 80%+
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Study the Assertion statement followed by the Reason statement given below:
| Assertion (A): | Mosses reduce the impact of falling rain and prevent soil erosion. |
| Reason (R): | Mosses form dense mats on the soil. |
| 1. | (A) is True and (R) is False. |
| 2. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 3. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 4. | (A) is False and (R) is True. |
Subtopic: Bryophytes |
91%
Level 1: 80%+
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Identify the incorrect match for Cycas and Pinus:
1. Only II
2. Only I and III
3. Only III
4. I, II and III
| Cycas | Pinus | ||
| I. | Root symbiosis | Cyanobacteria | Mycorrhiza |
| II. | Stems | Branched | Unbranched |
| III. | Male and female cones | On different trees | On the same tree |
1. Only II
2. Only I and III
3. Only III
4. I, II and III
Subtopic: Gymnosperms: I |
70%
Level 2: 60%+
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Unlike bryophytes and pteridophytes, in gymnosperms:
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: | the male and the female gametophytes do not have an independent free-living existence. |
| II: | vascular tissues [xylem and phloem] are present. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: General Accounts of Gymnosperms: II |
Level 3: 35%-60%
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Consider the two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | Systematics takes into account evolutionary relationships between organisms. |
| Statement II: | Taxonomy takes into account only some easily observable external characters of organisms. |
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Systematics & Type study |
61%
Level 2: 60%+
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In a moss, the sporophyte
| 1. | Manufactures food for itself, as well as for the gametophyte |
| 2. | Arises from a spore produced from gametophyte |
| 3. | Is partially parasitic on the gametophyte |
| 4. | Produces gametes that give rise to the gametophyte |
Subtopic: Bryophytes |
69%
Level 2: 60%+
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