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Q. No.In Coconut:
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
Subtopic: Endosperm |
75%
Level 2: 60%+
Hints
Identify A-D in the given enlarged view of one microsporangium showing wall layers:
| 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 |
Subtopic: Stamen: Microsporangium |
92%
Level 1: 80%+
Hints
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 |
81%
Level 1: 80%+
Hints
The diagram shows the false fruits of apple and strawberry.
| 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 |
Subtopic: Fruit |
83%
Level 1: 80%+
Hints
Long filamentous threads protruding at the end of a young cob of maize are:
| 1. | anthers | 2. | styles |
| 3. | ovaries | 4. | hairs |
Subtopic: Pollination & Outbreeding Devices |
80%
Level 1: 80%+
Hints
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. |
Subtopic: Endosperm |
81%
Level 1: 80%+
Hints
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 |
Subtopic: Pollination & Outbreeding Devices |
76%
Level 2: 60%+
Hints
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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 |
Subtopic: Seed |
Level 3: 35%-60%
Hints
‘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 |
Subtopic: Stamen: Male Gametophyte |
78%
Level 2: 60%+
Hints
Subtopic: Seed |
72%
Level 2: 60%+
Hints
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