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प्रश्न
Explain the difference between self-pollination and cross-pollination.
Give two differences between self- and cross-pollination.
Give one difference between self and cross pollination.
What are the differences between self and cross-pollination?
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उत्तर
| Self-Pollination | Cross-Pollination | |
| 1. | Transfer of pollen grains from the anther to the stigma of the same flower. | Transfer of pollen grains from the anther to the stigma of another flower. |
| 2. | Occurs in bisexual flowers having an anther and stigma maturing at the same time. | Occurs in bisexual flowers having an anther and stigma maturing at different times. |
| 3. | External medium is not required. | An external medium is required. |
| 4. | For examples, wheat, peas, etc. | For examples, lady finger, tomato, brinjal, etc. |
| 5. | There is less chance of pollen grains getting destroyed. | There is a greater chance of pollen grains getting destroyed. |
| 6. | The seeds produced by this method are not very healthy. | The seeds produced by this method would be healthier. |
Notes
Students should refer to the answer according to their question.
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संबंधित प्रश्न
Give advantages of self-pollination.
Reproductive part of a plant is
State true or false. If false, correct the statement.
The transfer of pollen to the stigma is known as pollination.
What are the agents of pollination?
Higher Order Question.
What will happen if pollen grain of rose gets deposited on stigma of lily flower? Will pollen germination takes place? Why?
Anemophilous flowers have ______.
Mention the function of the endosperm.
The part of the pistil which serves as a receptive structure for the pollen is called style.
______ refers to the pollination taking place below the surface of the water in hydrophytes bearing submerged female flowers.
The receptive part in the flower receives ______ in the process of pollination in angiosperms.
______ are abiotic agents of pollination.
Which of the following pollinating agent is involved in chiropterophily?
Identify the CORRECT statements about self-pollination.
- Self-pollination is the most economic method for plant modification.
- Genetic stability can be maintained in the progeny through self-pollination.
- Undesirable characters can be eliminated through self-pollination
- Continued self-pollination may result in the less viable seeds.
- Self-pollination favours evolution.
Match the following:
| Pollen | a. | anther |
| Ovule | b. | protection |
| stamen | c. | Powdery |
| Sepal | d. | Seed |
Self-pollination means ______.
List three strategies that a bisexual chasmogamous flower can evolve to prevent self pollination (autogamy).
How does self-pollination lead to economical benefits in plants?
Which condition is essential for self-pollination to occur in a flower?
