Question

Name one directional growth movement each in response to chemicals and water in plants. Write an example for each of them.

Answer 1

Directional Growth in Response to Chemicals:

• Chemotropism: Positive chemotropism occurs when plant roots develop towards the source of certain substances, such as nutrients or water. Roots travel towards chemical gradients for optimal nutrition uptake.

Directional Growth in Response to Water:

• Hydrotropism: Plant roots exhibit positive hydrotropism, directing development to regions with higher water supplies. This aids plant life by enabling them to find and access water sources.