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Q. No.Cultivation of flowering and ornamental plants for gardens and for commerce and trade is called:
| 1. | Horticulture | 2. | Plant breeding |
| 3. | Floriculture | 4. | Micropropagation |
Subtopic: FLOWER – A FASCINATING ORGAN OF ANGIOSPERMS |
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Level 2: 60%+
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Consider the following statements regarding floral primordium:
| I: | It is formed at the shoot apical meristem |
| II: | The development of flowers is dependent on genetics, PGR, and environmental conditions. |
Of the two statements:
| 1. | Only I is correct |
| 2. | Only II is correct |
| 3. | Both I and II are correct |
| 4. | Both I and II are incorrect. |
Subtopic: Stamen: Anther |
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Level 1: 80%+
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In a typically complete, bisexual, and hypogynous flower, the arrangement of floral whorls on the thalamus from the outermost to the innermost is:
| 1. | Calyx, corolla, androecium, and gynoecium |
| 2. | Calyx, corolla, gynoecium, and androecium |
| 3. | Gynoecium, androecium, corolla, and calyx |
| 4. | Androecium, gynoecium, corolla, and calyx |
Subtopic: Pollen - Pistil Interaction |
81%
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Among the terms listed below, those that are not technically correct names for a floral whorl are:
| i. | Androecium | ii. | Carpel |
| iii. | Corolla | iv. | Sepal |
| 1. | i and iv | 2. | iii and iv |
| 3. | ii and iv | 4. | i and ii |
Subtopic: Stamen: Anther |
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Anthers in angiosperms:
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: | are typically located at the tip of the filament of the stamen. |
| II: | are usually bilobed, each containing pollen sacs called microsporangia. |
| III: | dehisce, or split open, to release mature pollen. |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Stamen: Anther | Stamen: Microsporangium |
86%
Level 1: 80%+
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A typical angiosperm anther is:
1. Bilobed and polythecous
2. Unilobed and monothecous
3. Multilobed and monothecous
4. Bilobed and dithecous
Subtopic: Stamen: Anther | Stamen: Microsporangium |
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All the following regarding a typical angiosperm anther is correct except:
| 1. | it is bilobed |
| 2. | each lobe has two theca |
| 3. | a transverse groove runs diametrically separating the theca |
| 4. | it is a four-sided (tetragonal) structure consisting of four microsporangia located at the corners, two in each lobe. |
Subtopic: Stamen: Anther |
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Level 1: 80%+
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Please attempt this question first.
Consider the given two statements:
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
| Statement I: | A typical angiosperm anther is bilobed with each lobe having two theca, i.e., they are dithecous. |
| Statement II: | The anther is a four-sided (tetragonal) structure consisting of four microsporangia located at the corners, two in each lobe. |
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: Stamen: Anther |
94%
Level 1: 80%+
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Which of the following would not be true regarding the structure of a typical anther in an angiosperm?
| 1. | Lobes: 2 | 2. | Sides: 4 |
| 3. | Microsporangia: 4 | 4. | Theca in each lobe: 1 |
Subtopic: Stamen: Anther |
87%
Level 1: 80%+
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In an angiosperm, the structure that develops and becomes a pollen sac is called:
| 1. | Megasporophyll | 2. | Megasporangium |
| 3. | Microsporangium | 4. | Microsporophyll |
Subtopic: Stamen: Microsporangium |
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