1. | Micropyle | 2. | Nucellus |
3. | Funiculus | 4. | Hilum |
Given below are two statements:
Statement I: | Cleistogamous flowers are invariably autogamous. |
Statement II: | Cleistogamy is disadvantageous as there is no chance for cross pollination. |
In the light of the above statements, choose the correct answer from the options given below:
1. Statement I is incorrect but Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct but Statement II is incorrect.
Which part of the fruit, labelled in the given figure makes it a false fruit?
1. D-Seed
2. A-Mesocarp
3. B-Endocarp
4. C-Thalamus
Which of the following set represents the correct labeling of A, B, C and D with respect to the given diagram?
1. | A- Seed Coat, B- Cotyledon, C- Endosperm, D - Hypocotyle |
2. | A -Seed Coat, B- Scutellum, C- Endocarp, D - Mesocarp |
3. | A- Seed Coat, B- Scutellum, C- Microphyle, D - Endocarp |
4. | A-Pericarp, B - Coleoptile |
Assertion (A): | Hybrids are widely used in cultivation to increase productivity and apomixes can be an important tool for maintaining hybrid nature. |
Reason (R): | Seeds produced by apomictic plants are identical to mother plant as there is no segregation |
1. | Both (A) & (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) & (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true statement but (R) is false. |
4. | Both (A) and (R) are false statements. |
Group-A | Group-B |
A. Aleurone layer | i. without fertilization |
B. Parthenocarpic fruit | ii. Nutrition |
C. Ovule | iii. Double fertilization |
D. Endosperm | iv. Seed |
Assertion (A): | The megaspore mother cell divide mitotically to produce four spores. |
Reason (R): | Megaspore mother cells are diploid and megaspore is haploid. |
1. | Both (A) & (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) & (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) is false but (R) is true. |
Assertion (A): | Nocturnal flowers are pollinated by moths. |
Reason (R): | Nocturnal flowers are highly fragrant and dull in colour |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A) |
2. | Both (A) and (R) are true and (R) is not the correct explanation of (A) |
3. | (A) is true, (R) is false |
4. | (A) is false and (R) is false |
A. | Wind pollinated flowers have a single ovule in each ovary |
B. | Both wind and water pollinated flowers do not produce nectar |
C. | Bees are the dominant biotic pollinating agents |
D. | In geitonogamy transfer of pollen grains from anther to the stigma of another flower of different plant takes place |
1. | A → B → C | 2. | C → A → B |
3. | B → A → C | 4. | C → B → A |