Question

Study the below given figure and answer the following.

1. Can you identify the tree?
2. What tropism does it show?
3. Why do you think it occurs?

Answer 1

1. The tree shown in the diagram is the Rhododendron tree.
2. The plant exhibits thermotropism which is a directional growth movement of plant parts in response to changes in temperature.
3. This occurs as a defense mechanism against extreme cold. At low temperatures, the leaves curl inward and droop to reduce their exposed surface area, which helps prevent internal moisture loss and protects the cell membranes from frost damage.