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CHAPTER 24: SEXUAL REPRODUCTION IN FLOWERING PLANTS

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Question 1 of 15

1. Question
A dioecious flowering plant prevents both
- Autogamy And Geitonogamy
- Geitonogamy And Xenogamy
- Cleistogamy And Xenogamy
- Autogamy And Xenogamy
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Question 2 of 15

2. Question
Meiosis takes place in
- Gemmule
- Megaspore
- Meiocyte
- Conidia.
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Question 3 of 15

3. Question
The arrangement of the nuclei in a normal embryo sac in the dicot plants is
- 3 + 3 + 2
- 2 + 4 + 2
- 3 + 2 + 3
- 2 + 3 + 3.
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Question 4 of 15

4. Question
Perisperm differs from endosperm in
- Being a diploid tissue
- Its formation by fusion of secondary nucleus with several sperms
- Being a haploid tissue
- Having no reserve food
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Question 5 of 15

5. Question
Which one of the following fruits is parthenocarpic?
- Jackfruit
- Banana
- Brinjal
- Apple
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Question 6 of 15

6. Question
Which of the following statement is correct?
- Sporopollenin can withstand high temperatures but not strong acids.
- Sporopollenin can be degraded by enzymes.
- Sporopollenin is made up of inorganic materials.
- Sporopollenin can withstand high temperature as well as strong acids and alkalis.
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Question 7 of 15

7. Question
Geitonogamy involves
- Fertilization of a flower by the pollen from another flower of the same plant.
- Fertilization of a flower by the pollen from the same flower.
- Fertilization of a flower by the pollen from a flower of another plant in the same population.
- Fertilization of a flower by the pollen from a flower of another plant belonging to a distant population.
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Question 8 of 15

8. Question
Emasculation is not required when flowers are
- Bisexual
- Intersexual
- Unisexual
- Either (a) or (b)
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Question 9 of 15

9. Question
Apomixis is
- Formation of seeds by fusion of gametes.
- Formation of seeds without syngamy and meiosis.
- Formation of seeds with syngamy but no meiosis.
- None of the above
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Question 10 of 15

10. Question
- 4
- 1
- 2
- 3
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Question 11 of 15

11. Question
- 4
- 3
- 2
- 1
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Question 12 of 15

12. Question
- 3
- 4
- 2
- 1
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Question 13 of 15

13. Question
For artificial hybridisation experiment in bisexual flower, which of the sequences is correct ?
- Bagging –> Emasculation –> Crosspollination –> Rebagging
- Emasculation –> Bagging –> Crosspollination –> Rebagging
- Cross-pollination –> Bagging –> Emasculation –> Rebagging
- Self-pollination –> Bagging –> Emasculation –> Rebagging
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Question 14 of 15

14. Question
- 1
- 4
- 2
- 3
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Question 15 of 15

15. Question
Which one of the following statements is not true?
- Pollen grains are released from anthers at 2-celled state
- Sporogenous cell directly behaves as the megaspore mother cell
- Megaspore divides twice to form an eight nucleate embryosac
- Egg and synergids always lie near the micropylar end of ovule
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