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Q. No.In gymnosperms
1. The female gametophyte has independent free-living existence.
2. Two different types of spores are produced.
3. Ovules are enclosed by an ovary wall.
4. Pollen grains are carried to the ovule by water currents.
Subtopic: Gymnosperms |
77%
From NCERT
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The given figure represents the life cycle of:
.svg-cropped.svg)
1. a homosporous plant with bisexual gametophytes
2. a heterosporous plant with bisexual gametophytes
3. a homosporous plant with unisexual gametophytes
4. a heterosporous plant with unisexual gametophytes
1. a homosporous plant with bisexual gametophytes
2. a heterosporous plant with bisexual gametophytes
3. a homosporous plant with unisexual gametophytes
4. a heterosporous plant with unisexual gametophytes
Subtopic: Pteridophytes |
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The given figure represents the life cycle of a typical:
| 1. Gymnosperm | 2. Angiosperm |
| 3. Bryophyte | 4. Pteridophyte |
Subtopic: General Account of Angiosperms (OLD NCERT) |
92%
From NCERT
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The given figure represents:
| 1. | Equisetum, a horsetail where A is macrophyll and B is microphyll |
| 2. | Sphagnum, peat moss where A is microphyll and B is macrophyll |
| 3. | Equisetum, a horsetail where A is archegonial branch and B is antheridial branch |
| 4. | Sphagnum, peat moss where A is archegonial branch and B is antheridial branch |
Subtopic: Bryophytes |
71%
From NCERT
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The given structure belongs to:
1. the gametophytic generation in the life cycle of a fern
2. the sporophytic generation in the life cycle of a fern
3. the gametophytic generation in the life cycle of a moss
4. the sporophytic generation in the life cycle of a moss
1. the gametophytic generation in the life cycle of a fern
2. the sporophytic generation in the life cycle of a fern
3. the gametophytic generation in the life cycle of a moss
4. the sporophytic generation in the life cycle of a moss
Subtopic: Bryophytes |
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The given diagram shows:
1. The male thallus of
Marchantia
2. The female thallus of
Marchantia
3. The male thallus
of Funaria
4.The female thallus of Funaria
1. The male thallus of
Marchantia
2. The female thallus of
Marchantia
3. The male thallus
of Funaria
4.The female thallus of Funaria
Subtopic: Bryophytes |
83%
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Study the given two statements – an Assertion and Reason, and select the correct answer from the options given:
Assertion: Chlorella is used as a food source and food supplement.
Reason: Chlorella is high in protein and other essential nutrients.
1. Assertion is true but Reason is false
2. Both Assertion and Reason are true and Reason correctly explains Assertion
3. Assertion is false but Reason is true.
4. Both Assertion and Reason are true but Reason does not correctly explain Assertion.
Assertion: Chlorella is used as a food source and food supplement.
Reason: Chlorella is high in protein and other essential nutrients.
1. Assertion is true but Reason is false
2. Both Assertion and Reason are true and Reason correctly explains Assertion
3. Assertion is false but Reason is true.
4. Both Assertion and Reason are true but Reason does not correctly explain Assertion.
Subtopic: Algae | Chlorophyceae: Green Algae |
84%
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Regarding pteridophytes:
I: They are first terrestrial plants to produce seeds.
II: The main plant body is a sporophyte.
III: Prothallus is a thalloid gametophyte.
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: They are first terrestrial plants to produce seeds.
II: The main plant body is a sporophyte.
III: Prothallus is a thalloid gametophyte.
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
Subtopic: Pteridophytes |
61%
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What would be true for both Pinus and Cycas?
1. A male and female gametophyte having independent free-living existence.
2. Coralloid roots associated with symbiotic nitrogen-fixing cyanobacteria
3. Ovules not enclosed by any ovary wall and remain exposed, before and after fertilisation
4. Presence of male and female cones or strobili on the same plant
1. A male and female gametophyte having independent free-living existence.
2. Coralloid roots associated with symbiotic nitrogen-fixing cyanobacteria
3. Ovules not enclosed by any ovary wall and remain exposed, before and after fertilisation
4. Presence of male and female cones or strobili on the same plant
Subtopic: Gymnosperms |
74%
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The life cycle in:
1. Fucus is haplontic
2. Gymnosperms is haplontic
3. Spirogyra is haplo-diplontic
4. Bryophytes and pteridophytes is haplo-diplontic
1. Fucus is haplontic
2. Gymnosperms is haplontic
3. Spirogyra is haplo-diplontic
4. Bryophytes and pteridophytes is haplo-diplontic
Subtopic: Life Cycle Patterns in Plants (OLD NCERT) |
81%
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