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Q. No.What is a prothallus?
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 pteridophytes
Subtopic: Pteridophytes |
71%
Level 2: 60%+
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What makes Red Algae different from Green Algae and Brown Algae?
| 1. | Unlike Green Algae and Brown Algae, Red Algae do not have chlorophyll a. |
| 2. | Unlike Green Algae and Brown Algae, Red Algae have no differentiated cells. |
| 3. | Unlike Green Algae and Brown Algae, Red Algae are not photosynthetic. |
| 4. | Unlike Green Algae and Brown Algae, Red Algae do not have any flagellated stages in their life cycles. |
Subtopic: Algae | Rhodophyceae: Red Algae and Importance of Algae |
90%
Level 1: 80%+
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Where does the early embryonic development of zygote in bryophytes take place?
| 1. | In the Protonema. | 2. | In the Sporangium. |
| 3. | In the Antheridium. | 4. | In the Archegonium. |
Subtopic: Bryophytes |
60%
Level 2: 60%+
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Thallus like plant body, attached to substratum by rhizoids, requiring water for sexual reproduction and a dominant gametophyte characterise:
| 1. | Pteridophytes | 2. | Gymnosperms |
| 3. | Monocots | 4. | Bryophytes |
Subtopic: Bryophytes |
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Level 1: 80%+
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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%
Level 1: 80%+
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Identify the correct statements:
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| I: | Phylogenetic classification systems are based on evolutionary relationships. |
| II: | Numerical Taxonomy is based on all observable characteristics. |
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Classification System |
86%
Level 1: 80%+
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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 |
Subtopic: Bryophytes | Pteridophytes |
86%
Level 1: 80%+
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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%
Level 2: 60%+
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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 |
84%
Level 1: 80%+
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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 |
89%
Level 1: 80%+
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