Tropisms and Turgor Pressure Review

Front

What is turgor pressure?

Back

Turgor pressure is the pressure of the cell contents against the cell wall in plant cells, which helps maintain the plant's structure and rigidity.

Front

What is a stimulus?

Back

A stimulus is any change in the environment that causes a response in an organism.

Front

What is an internal stimulus?

Back

An internal stimulus is a change that occurs within an organism, such as turgor pressure affecting plant growth.

Front

What is an external stimulus?

Back

An external stimulus is a change that occurs outside an organism, such as light or gravity.

Front

What is phototropism?

Back

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

Front

What is gravitropism?

Back

Gravitropism is the growth of a plant in response to gravity, where roots grow downward and stems grow upward.

Front

What is thigmotropism?

Back

Thigmotropism is the growth of a plant in response to touch or physical contact, such as vines wrapping around a support.

Front

What is the difference between positive and negative tropism?

Back

Positive tropism is growth towards a stimulus, while negative tropism is growth away from a stimulus.

Front

What role does turgor pressure play in plant health?

Back

Turgor pressure helps maintain the structure of plant cells, allowing them to remain firm and upright.

Front

What is the significance of density as a stimulus?

Back

Density is not considered a stimulus because it does not directly cause a response in organisms.