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Q. No.The composition of the cell wall in algae varies widely among different groups. Which of the following is not a common component of algal cell walls?
1.
Cellulose
2.
Pectin
3.
Chitin
4.
Algin
Subtopic: Algae |
87%
From NCERT
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What is the key difference between bryophytes and pteridophytes?
| 1. | Bryophytes are vascular plants, whereas pteridophytes are non-vascular. |
| 2. | Bryophytes have seeds, while pteridophytes reproduce through spores. |
| 3. | Pteridophytes have a well-developed vascular system, unlike bryophytes. |
| 4. | Bryophytes are predominantly aquatic, while pteridophytes are terrestrial |
Subtopic: Bryophytes | Pteridophytes |
90%
From NCERT
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Which classes of algae are characterized by the presence of chlorophyll a?
1. Only I and II
2. Only II and III
3. Only I and III
4. I, II and III
| I: | Chlorophyceae |
| II: | Phaeophyceae |
| III: | Rhodophyceae |
1. Only I and II
2. Only II and III
3. Only I and III
4. I, II and III
Subtopic: Pheophyceae: Brown Algae | Rhodophyceae: Red Algae and Importance of Algae | Chlorophyceae: Green Algae |
90%
From NCERT
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Red algae are characterized by:
1. Having chlorophyll a and b
2. Storing food as starch
3. Their red color due to the pigment phycoerythrin
4. Floating freely in fresh water habitats
1. Having chlorophyll a and b
2. Storing food as starch
3. Their red color due to the pigment phycoerythrin
4. Floating freely in fresh water habitats
Subtopic: Rhodophyceae: Red Algae and Importance of Algae |
97%
From NCERT
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Which of the following is a comparison between Pteridophytes and Gymnosperms?
| 1. | Both reproduce sexually through seeds. |
| 2. | Pteridophytes have a well-developed vascular system, whereas gymnosperms do not. |
| 3. | Pteridophytes reproduce through spores, while gymnosperms reproduce through seeds. |
| 4. | Both are non-flowering plants that reproduce asexually. |
Subtopic: Pteridophytes | Gymnosperms |
79%
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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Match the plant groups in Column I with their characteristic reproductive features in Column II:
Codes:
| Column I | Column II | ||
| A | Angiosperms | P | Produce seeds in cones |
| B | Gymnosperms | Q | Produce spores on the underside of fronds |
| C | Ferns | R | Seeds develop inside an ovary, which matures into a fruit |
| D | Mosses | S | Spores develop in capsule at the end of a stalk |
| A | B | C | D | |
| 1. | P | R | Q | S |
| 2. | P | R | S | Q |
| 3. | R | P | Q | S |
| 4. | R | P | S | Q |
Subtopic: Bryophytes | Gymnosperms |
69%
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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Which of the following will be true for both bryophytes and pteridophytes?
1. They reproduce only asexually
2. They are vascular cryptogams
3. They have a dominant gametophyte
4. They require water for fertilisation
1. They reproduce only asexually
2. They are vascular cryptogams
3. They have a dominant gametophyte
4. They require water for fertilisation
Subtopic: Bryophytes | Pteridophytes |
86%
From NCERT
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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 diploid |
| II: | Body is differentiated in true roots, stems, and leaves |
| III: | Roots, stems, and leaves 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 |
85%
From NCERT
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