During pollination, plants ensure that the pollen grain from a species germinates on the stigma of the same species. Which of the following ensures this?

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MCQ (Single)Chemotropism in Plants

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The growth of a pollen tube towards the ovule in a flower is an example of which type of tropism?

MCQ (Single)Chemotropism in Plants

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Here is a picture of a germinating seed. (a) What is the environmental stimulus required for the seed to develop roots downwards and shoots upwards? Name the respective phenomenon. (b) What environmental factor in the experimental setup shown below can be altered in Figure X to observe the direction of root growth as observed in Figure Y? (c) Name the tropic movement that occurs when pollen tubes grow towards ovules.

TextPhototropism in PlantsGeotropism in PlantsChemotropism in Plants