Consider the following statements about artificial hybridisation in unisexual flowers:

1. Emasculation is required for the female parent.
2. Bagging of the female flower bud is required.
3. Pollination is done when the stigma becomes receptive.
4. Rebagging is done after pollination.

Which of the above statements are correct?

[Sexual-Reproduction-in-Flowering-Plants] [class-xii]

• 1, 2 and 3
• 2, 3 and 4
• 1, 3 and 4
• 1 and 2 only

Consider the following statements regarding the filiform apparatus:

1. It is a cellular thickening at the chalazal end of synergids.
2. It guides the entry of the pollen tube.
3. It is present in the egg cell.
4. It is part of the synergid cell.

Which of the above statements are correct?

[Sexual-Reproduction-in-Flowering-Plants] [class-xii]

• 1 and 2
• 2 and 4
• 1 and 3
• 3 and 4

Consider the following statements about genetic diversity:

1. Sexual reproduction generates new genetic combinations.
2. Apomixis produces genetically identical progeny (clones).
3. Hybrid seeds segregate characters in the next generation.
4. Self-pollination increases genetic diversity.

Which of the above statements are correct?

[Sexual-Reproduction-in-Flowering-Plants] [class-xii]

• 1, 2 and 3
• 1, 3 and 4
• 2, 3 and 4
• 1 and 4 only

Consider the following statements regarding the cells in the embryo sac after fertilisation:

1. The synergids degenerate.
2. The antipodals degenerate.
3. The central cell develops into the embryo.
4. The zygote develops into the embryo.

Which of the above statements are correct?

[Sexual-Reproduction-in-Flowering-Plants] [class-xii]

• 1, 2 and 3
• 1, 2 and 4
• 2, 3 and 4
• 1 and 4 only

Consider the following statements about parthenocarpy and apomixis:

1. Parthenocarpy is fruit formation without fertilisation.
2. Apomixis is seed formation without fertilisation.
3. Both processes involve double fertilisation.
4. Apomixis mimics sexual reproduction.

Which of the above statements are correct?

[Sexual-Reproduction-in-Flowering-Plants] [class-xii]

• 1, 2 and 3
• 1, 2 and 4
• 2, 3 and 4
• 1 and 4 only

Consider the following statements regarding the role of the micropyle:

1. It allows entry of the pollen tube into the ovule.
2. It allows entry of oxygen into the seed.
3. It allows entry of water into the seed for germination.
4. It develops into the seed coat.

Which of the above statements are correct?

[Sexual-Reproduction-in-Flowering-Plants] [class-xii]

• 1, 2 and 3
• 1, 3 and 4
• 2, 3 and 4
• 1 and 4 only

Consider the following statements about endosperm development steps:

1. PEN divides mitotically.
2. Free nuclei are formed first.
3. Cell walls form centripetally (implied by cellularisation).
4. Endosperm is always completely cellular at maturity.

Which of the above statements are correct?

[Sexual-Reproduction-in-Flowering-Plants] [class-xii]

• 1, 2 and 3
• 1, 2 and 4
• 2, 3 and 4
• 1 and 4 only

Consider the following statements regarding the epicotyl and hypocotyl:

1. Epicotyl is the axis above the cotyledons.
2. Hypocotyl is the axis below the cotyledons.
3. Epicotyl terminates in the root tip.
4. Hypocotyl terminates in the radicle.

Which of the above statements are correct?

[Sexual-Reproduction-in-Flowering-Plants] [class-xii]

• 1, 2 and 3
• 1, 2 and 4
• 2, 3 and 4
• 1 and 4 only

Consider the following statements regarding the fate of the zygote:

1. It is a diploid cell.
2. It forms the embryo.
3. It divides before the PEN divides.
4. It is formed by the fusion of a male gamete and an egg.

Which of the above statements are correct?

[Sexual-Reproduction-in-Flowering-Plants] [class-xii]

• 1, 2 and 3
• 1, 2 and 4
• 2, 3 and 4
• 1 and 4 only

Consider the following statements about the seed coat:

1. It develops from the integuments of the ovule.
2. It has a pore called the micropyle.
3. It protects the embryo.
4. It is always soft and fleshy.

Which of the above statements are correct?

[Sexual-Reproduction-in-Flowering-Plants] [class-xii]

• 1, 2 and 3
• 1, 2 and 4
• 2, 3 and 4
• 1 and 4 only