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Q. No.The diagram of NCERT given below shows two types of flowers in a certain plant:
Statement I:
Cleistogamous flowers have an advantage and a disadvantage over chasmogamous flowers.
Statement II:
Seed set is assured even in the absence of pollinators but the amount of genetic variations is less in cleistogamous flowers when compared to the chasmogamous flowers.
1.
Statement I is correct; Statement II is correct but Statement II does not explain Statement I.
2.
Statement I is correct; Statement II is correct and Statement II explains Statement I.
3.
Statement I is correct but Statement II is not correct.
4.
Both Statement I and Statement II are not correct.
Subtopic: Pollination & Outbreeding Devices |
83%
From NCERT
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The plant shown in the given diagram is most likely to be pollinated by:
| 1. | Water | 2. | Wind |
| 3. | Bees | 4. | Bats |
Subtopic: Pollination & Outbreeding Devices |
93%
From NCERT
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The diagram shows:
1. Pollination by water in Vallisneria
2. Pollination by water in Zostera
3. Pollination by wind in Water hyacinth
4. Pollination by the wind in Water lily
1. Pollination by water in Vallisneria
2. Pollination by water in Zostera
3. Pollination by wind in Water hyacinth
4. Pollination by the wind in Water lily
Subtopic: Pollination & Outbreeding Devices |
82%
From NCERT
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In the diagram identify A to D:
| A | B | C | D | |
| 1. | Synergid | Polar nuclei | Male gamete | Antipodal |
| 2. | Synergid | PEN | Male gamete | Antipodal |
| 3. | Antipodal | Polar nuclei | Egg cell | Synergid |
| 4. | Antipodal | PEN | Egg cell | Synergid |
Subtopic: Pollen - Pistil Interaction |
85%
From NCERT
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In the given diagram:
| Statement I: | I shows the entry of the pollen tube into a synergid under the guidance of A. |
| Statement II: | II shows the discharge of male gametes into a synergid. |
| 1. | Statement I is correct, Statement II is correct |
| 2. | Statement I is incorrect, Statement II is correct |
| 3. | Statement I is correct, Statement II is incorrect |
| 4. | Statement I is incorrect, Statement II is incorrect |
Subtopic: Pollen - Pistil Interaction |
87%
From NCERT
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The diagram shows a fertilised embryo sac where:
| Statement I: | A is diploid and B is triploid |
| Statement II: | C are degenerating antipodal cells and D are degenerating synergids |
| 1. | Statement I is correct, Statement II is correct |
| 2. | Statement I is incorrect, Statement II is correct |
| 3. | Statement I is correct, Statement II is incorrect |
| 4. | Statement I is incorrect, Statement II is incorrect |
Subtopic: Double Fertilization |
86%
From NCERT
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The diagram shows stages in embryo development in a dicot where A, B, and C respectively are:
| 1. | Globular embryo, Heart shaped embryo, Immature Embryo |
| 2. | Globular embryo, Heart shaped embryo, Mature Embryo |
| 3. | Heart-shaped embryo, Globular embryo, Mature Embryo |
| 4. | Heart-shaped embryo, Globular embryo, Immature Embryo |
Subtopic: Double Fertilization |
93%
From NCERT
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Identify A- D in the diagram showing a typical dicot embryo:
| A | B | C | D | |
| 1. | Radicle | Epicotyl | Plumule | Root cap |
| 2. | Radicle | Epicotyl | Plumule | Coleoptile |
| 3. | Plumule | Hypocotyl | Radicle | Root cap |
| 4. | Plumule | Hypocotyl | Radicle | Coleoptile |
Subtopic: Embryo |
89%
From NCERT
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Identify A – D in the diagram showing L.S. of an embryo of grass:
| A | B | C | D | |
| 1. | Perisperm | Coleoptile | Epiblast | Coleorrhiza |
| 2. | Scutellum | Coleoptile | Epiblast | Coleorrhiza |
| 3. | Scutellum | Hypocotyl | Hypoblast | Coleoptile |
| 4. | Scutellum | Hypocotyl | Hypoblast | Coleoptile |
Subtopic: Embryo |
92%
From NCERT
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In the given diagram showing the structure of a monocot seed:
| Statement I: | A is pericarp. |
| Statement II: | B is the cotyledon of the monocot seed. |
| Statement III: | C is triploid in nature and develops before B. |
| 1. | Only Statement I is correct |
| 2. | Only Statement II and Statement III are correct |
| 3. | Only Statement II is correct |
| 4. | Only Statement III is correct |
Subtopic: Seed |
68%
From NCERT
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