Plant Physiology

Ethylene is a plant hormone that regulates various aspects of plant growth, including fruit ripening. It is often used commercially to accelerate the ripening process of fruits like bananas and tomatoes.

Geotropism is the growth response of plants to gravity. Roots grow downwards in response to the gravitational force, which is also called geotropism.

Alkaloids are nitrogenous compounds that are commonly stored in various parts of plants. They often have toxic properties and are used by plants as a defense mechanism.

The process of evaporation of water through the leaves of plants is called transpiration. It helps in cooling the plant and also in the movement of water and nutrients.