Question:
Growth of pollen tube towards embryo sac is in example of
Growth of pollen tube towards embryo sac is in example of
Updated On: Jun 7, 2022
- geotropism
- thigmotaxis
- chemotaxis
- all of these
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The Correct Option is C
Solution and Explanation
Tube formed on germination of a pollen grain is called pollen tube. It grows towards the egg along a chemical gradient i.e. chemotaxis. Chemotaxis is the movement of a cell, or a microorganism in response to a chemical stimulus.
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Concepts Used:
Sexual Reproduction in Flowering Plants
Sexual reproduction in flowering plants takes place or happens when the production of a new organism occurs from two parents by making use of their gametes or sex cells. Both sexual and asexual reproduction can be found in plants. Nearly all flowering plants reproduce sexually. Flowers play a captious role in the process as it carries both the male and female reproductive parts commonly known as androecium and gynoecium respectively.
An individual flower comprises the following parts -
- Pedicle
- Calyx
- Petals
- Sepals
- Stamen
- Pistil
- Receptacle