Plant Kingdom

Front

What is thigmonasty?

Back

Thigmonasty is a rapid movement response of a plant to touch or physical stimuli, such as the closing of the Venus flytrap when an insect touches its leaves.

Front

What causes stomata to close in plants?

Back

Stomata close primarily in response to a decrease in water volume in the soil, which helps to conserve water.

Front

What internal stimulus causes a plant to wilt?

Back

A lack of water in the stem is the internal stimulus that causes a plant to wilt.

Front

What part of the plant must close to reduce water loss when wilted?

Back

The stomata must close to reduce water loss when a plant is wilted.

Front

What is positive geotropism?

Back

Positive geotropism is the growth of plant roots downward in response to gravity.

Front

What is gravitropism?

Back

Gravitropism is a plant's growth response to gravity, where roots exhibit positive gravitropism and stems exhibit negative gravitropism.

Front

What is phototropism?

Back

Phototropism is the growth of a plant in response to light, where stems grow towards the light source.

Front

What is the function of stomata in plants?

Back

Stomata are small openings on the surface of leaves that allow for gas exchange, including the intake of carbon dioxide and the release of oxygen.

Front

What is the role of guard cells?

Back

Guard cells are specialized cells that control the opening and closing of stomata, regulating gas exchange and water loss.

Front

What is wilting in plants?

Back

Wilting is a condition in plants that occurs when they lose more water than they take in, leading to drooping leaves and stems.