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SL/HL Topic D3.1 Reproduction (id: 4a051c9e2)

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admin 发表于 2025-2-1 15:44:03 | 显示全部楼层 |阅读模式
本题目来源于试卷: SL/HL Topic D3.1 Reproduction,类别为 IB生物学

[问答题]
6. Explain the importance of self-incompatibility methods in pollinuhibtbe -sd) c48i2*m5 va: saatnam 3, 6l fj9yz(rb;f3/cxh3 *asu fwsion and fertilisation lcm, ;ws u3j * a9s3bffzn (a6xyfh3r/which achieve greater genetic diversity within a species of flowering plant.




参考答案:
Self-pollination is likely in many plants, as they produce large numbers of flowers on a single plant / pollinators may visit several flower on the same plant.
Self pollination reduces genetic diversity in offspring. / it is a form of inbreeding.
Genetic diversity is increased by cross pollination/pollination between different plants.
Self-incompatibility methods are genetic mechanisms which prevent self-pollination/promote cross pollination.
As pollen landing on the stigma does not grow a pollen tube, leaving non-self pollen to fertilize ovules.



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