Question

The growth of pollen tubes towards ovules is due to chemotropism.

• A. True
• B. False

Answer 1

The correct option is A True

Chemotropism:

1. Chemotropism is the growth of organisms such as bacteria and plants, with the help of a chemical stimulus from outside of the organism or from the organism's part.
2. The response of the organism is termed 'positive' if the growth is towards the stimulus or 'negative' if the growth is away from the stimulus.
3. Fertilization of flowers by pollen is achieved because the ovary release chemicals that produce a positive chemotropic response from the developing pollen tube.
4. The growth of pollen tubes towards the ovule is an example of chemotropism.

Hence, the given statement is true.