Q. No.In the most common type of endosperm development:
1.
cell wall formation occurs simultaneously with each nuclear division of PEN from the beginning.
2.
the PEN undergoes successive nuclear divisions to give rise to free nuclei and subsequently cell wall formation occurs.
3.
the PEN undergoes one division without cell wall formation and then all subsequent divisions are associated with cell wall formation.
4.
cell wall formation does not take place at all.
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| Statement I: | coconut water is a cellular endosperm |
| Statement II: | kernel is the cellular endosperm |
| 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 |
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| Assertion (A): | Seed is the basis of our agriculture. |
| Reason (R): | Dehydration and dormancy of mature seeds enable them to be stored and used as food throughout the year and also to raise the crop in the next season. |
| 1. | (A) is false but (R) is true. |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
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The Plant is:
1. Lupinus arcticus
2. Phoenix dactylifera
3. Cycas revoluta
4. Gnetum
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| Assertion (A): | An apomixis is a form of asexual reproduction that mimics sexual reproduction. |
| Reason (R): | There is no fertilisation in apomicts plants and they do not produce any seeds. |
| 1. | (A) is true but (R) is false. |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is false but (R) is true. |
| 4. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
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| Statement I: | In some apomicts, the diploid egg cell is formed without reduction division and develops into the embryo without fertilisation. |
| Statement II: | In many Citrus and mango varieties, some of the nucellar cells surrounding the embryo sac start dividing, protrude into the embryo sac, and develop into the embryos and this is called as nucellar polyembryony. |
| 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 |
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| 1. | Horticulture | 2. | Plant breeding |
| 3. | Floriculture | 4. | Micropropagation |
| Statement I: | A is anther and collectively anthers form the androecium of the flower. |
| Statement II: | B is the site for landing of pollens during pollination, C is style, and D after fertilisation becomes a fruit. |
| 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 |
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| Statement I: | The bilobed nature of an anther is very distinct in the given section. |
| Statement II: | The anther is a two-sided [bigonal] structure consisting of four microsporangia located at the corners, two in each lobe. |
| 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. |
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| A | B | C | D | |
| 1. | Epidermis | Endothecium | Middle layers | Tapetum |
| 2. | Epithelium | Endothelium | Middle layers | Tapetum |
| 3. | Endothecium | Epidermis | Tapetum | Middle layers |
| 4. | Epithelium | Endothelium | Tapetum | Middle layers |
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