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Continuity and Change D.7 Reproduction (id: 8c99fd9fc)

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admin 发表于 2024-2-7 00:10:03 | 显示全部楼层 |阅读模式
本题目来源于试卷: Continuity and Change D.7 Reproduction,类别为 IB生物学

[单选题]
Flowers produce male gametes, known as posid2y cvk;* d8llen, and female gam5qu0b(b g y 6jk8bq; fj2m4apd)w0mg metes, called ova. The diagram b8wkf(bbmu qm425d ;0 pqb6jy0)magjg elow shows an animal-pollinated flower.

Which row correctly matches the gametes with the structure that produces them?

A. Pollen is Anther;Ovum is Ovule
B. Pollen is Anther;Ovum is Stigma
C. Pollen is Filament;Ovum is Ovule
D. Pollen is Filament;Ovum is Style


参考答案:  A


本题详细解析:
Choice A is correct because pollen is produced by the anther and the ovum (plural: ova) is produced by the ovule, found inside the ovary. Choice B is incorrect because the stigma is where pollen lands. Choice C is incorrect because the filament supports the anther and does not produce pollen. Choice D is incorrect because the filament supports the anther and the style is the part of the flower that the pollen passes through.

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