Statement I: | False fruits develop only from the ovary. |
Statement II: | A is Thalamus and B is Achene. |
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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Long filamentous threads protruding at the end of a young cob of maize are:
1. | anthers | 2. | styles |
3. | ovaries | 4. | hairs |
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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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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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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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Wind-pollinated flowers are characterized by the following, except:
1. | Light and non-sticky pollen grains |
2. | Well-exposed stamens |
3. | Many ovules in each ovary |
4. | Large, often-feathery stigma |
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Seed formation is a more dependable reproductive strategy in angiosperms because:
1. | Pollination and fertilization are independent of water |
2. | Seeds have better adaptive strategies for dispersal |
3. | Seeds have sufficient food reserves |
4. | New genetic combinations are generated during seed formation |
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‘Germ pore’ in pollen in angiosperms:
1. | is a part of pollen intine where sporopollenin is present |
2. | is a part of pollen intine where sporopollenin is absent |
3. | is a part of pollen exine where sporopollenin is present |
4. | is a part of pollen exine where sporopollenin is absent |
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Perisperm can be seen in the seeds of:
1. | Beet | 2. | Castor |
3. | Pea | 4. | Groundnut |
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