Q. No.Evolutionarily, the first terrestrial plants to possess vascular tissues are:
| 1. | Bryophytes | 2. | Pteridophytes |
| 3. | Gnetales | 4. | Cycads |
Subtopic: Pteridophytes |
93%
Level 1: 80%+
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Identify the incorrect statement:
| 1. | As compared to the bryophytes, pteridophytes have sporophyte as the main plant body |
| 2. | Pteridophyte sporophyte has well differentiated true roots, stem and leaves |
| 3. | Selaginella has macrophylls like ferns |
| 4. | In sporophyte of ferns, leaf-like appendages called sporophylls subtend sporangia |
Subtopic: Pteridophytes |
76%
Level 2: 60%+
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In pteridophytes:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
| I: | the main plant body is a gametophyte |
| II: | body is differentiated into true root, stem and leaves |
| III: | organs possess well-differentiated vascular tissues |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Pteridophytes |
77%
Level 2: 60%+
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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. |
Subtopic: Pteridophytes |
88%
Level 1: 80%+
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A prothallus is
| 1. | A structure in pteridophytes formed before the thallus develops |
| 2. | A sporophytic free living structure formed in pteridophytes |
| 3. | A gametophyte free living structure formed in pteridophytes |
| 4. | A primitive structure formed after fertilization in pteriodophytes |
Subtopic: Pteridophytes |
67%
Level 2: 60%+
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Consider the following two statements:
| I: | The spread of living pteridophytes is restricted to narrow geographical regions |
| II: | They are the first terrestrial plants to possess vascular tissues |
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is true but II is false
4. I is false but II is true
Subtopic: Pteridophytes |
74%
Level 2: 60%+
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements choose the correct answer from the options given below:
| Assertion (A): | The spread of living pteridophytes is limited and restricted to narrow geographical regions. |
| Reason (R): | Evolutionarily, pteridophytes are the first terrestrial plants to possess vascular tissues – xylem and phloem. |
| 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: Pteridophytes |
83%
Level 1: 80%+
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A plant has a diploid sporophyte as the dominant, independent, photosynthetic, vascular body. It alternates with multicellular, saprophytic/autotrophic, independent but short-lived haploid gametophyte. This plant most likely belongs to:
| 1. | Red algae | 2. | Bryophytes |
| 3. | Pteridophytes | 4. | Gymnosperms |
Subtopic: Pteridophytes |
78%
Level 2: 60%+
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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 |
Level 3: 35%-60%
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Consider the given two statements:
| Assertion (A): | Ferns exhibit an alternation of generations where the gametophyte is dominant. |
| Reason (R): | In ferns, the gametophyte is independent and photosynthetic but smaller and less complex than the sporophyte. |
| 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: Pteridophytes |
82%
Level 1: 80%+
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