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Q. No.All of the following statements hold true for both protonema and prothallus, except
1. Free living gametophyte structure
2. Formed from spore
3. Photosynthetic in nature
4. Branched and filamentous
Subtopic: Bryophytes |
54%
From NCERT
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In mosses, the sex organs bearing stage is
1. Protonema
2. Leafy stage
3. Diploid plant
4. Prothallus
1. Protonema
2. Leafy stage
3. Diploid plant
4. Prothallus
Subtopic: Bryophytes |
83%
From NCERT
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State true (T) or false (F) for the given statements and select the correct option
A: Pteridophytes may flourish well in sandy soil conditions
B: Pteridophytes grow in very limited and restricted geographical regions
A: Pteridophytes may flourish well in sandy soil conditions
B: Pteridophytes grow in very limited and restricted geographical regions
| A | B | |
| 1. | T | F |
| 2. | F | T |
| 3. | T | T |
| 4. | F | F |
Subtopic: Pteridophytes |
73%
From NCERT
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Water is required for the transfer of male gametes to the mouth of archegonium in all, except
1. Mosses
2. Liverworts
3. Pteridophytes
4. Algae
1. Mosses
2. Liverworts
3. Pteridophytes
4. Algae
Subtopic: Algae |
71%
From NCERT
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Select the option not related to gymnosperms
| Column I | Column II | |
| 1. | Roots | Tap/coralloid |
| 2. | Leaves | Simple/Compound |
| 3. | Stem | Branched/Unbranched |
| 4. | Spores | Homo/Heterospores |
Subtopic: Gymnosperms |
78%
From NCERT
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Male gametophyte in gymnosperms is called
1. Antherozoid
2. Antheridium
3. Pollen grain
4. Generative cell
1. Antherozoid
2. Antheridium
3. Pollen grain
4. Generative cell
Subtopic: Gymnosperms |
68%
From NCERT
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In Cycas which of the following structures is not seen?
1. Megasporophyll
2. Male cone
3. Female cone
4. Pinnate leaves
1. Megasporophyll
2. Male cone
3. Female cone
4. Pinnate leaves
Subtopic: Gymnosperms |
From NCERT
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Gametophytes are dependent on sporophyte in all
1. Seed plants
2. Vascular plants
3. Embryophytes
4. Heterosporous plants
1. Seed plants
2. Vascular plants
3. Embryophytes
4. Heterosporous plants
Subtopic: General Account of Angiosperms (OLD NCERT) | Gymnosperms |
From NCERT
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Each embryo sac consists of
1. Synergids and an egg cell
2. Polar nuclei, secondary nucleus and an egg cell
3. Egg apparatus, three antipodals and two polar nuclei
4. Egg apparatus and antipodals
1. Synergids and an egg cell
2. Polar nuclei, secondary nucleus and an egg cell
3. Egg apparatus, three antipodals and two polar nuclei
4. Egg apparatus and antipodals
Subtopic: General Account of Angiosperms (OLD NCERT) |
84%
From NCERT
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The gametophytic phase can be represented by the single to few celled gametophyte or few to multicelled gametophyte as in
1. Fucus and seed plants respectively
2. Seed plants and Fucus respectively
3. Ectocarpus and Fucus respectively
4. Spirogyra and Fucus respectively
1. Fucus and seed plants respectively
2. Seed plants and Fucus respectively
3. Ectocarpus and Fucus respectively
4. Spirogyra and Fucus respectively
Subtopic: Life Cycle Patterns in Plants (OLD NCERT) |
From NCERT
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