Plant Tropisms

Front

What is geotropism?

Back

Geotropism is the movement of a plant's roots toward the ground and stems away from the ground in response to gravity.

Front

What is hydrotropism?

Back

Hydrotropism is the movement of a plant's roots toward water in the soil.

Front

What is thigmotropism?

Back

Thigmotropism is the movement or growth of a plant in response to touch or physical contact.

Front

What is phototropism?

Back

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

Front

What does an external stimulus refer to in plant tropisms?

Back

An external stimulus is an environmental factor that causes a plant to respond, such as light, gravity, or touch.

Front

How do roots and stems react to gravity when a plant is lying on its side?

Back

Roots react positively by growing downward, while stems and leaves react negatively by growing upward.

Front

What is the role of auxins in plant tropisms?

Back

Auxins are hormones that regulate plant growth and are involved in the directional growth responses to stimuli.

Front

Give an example of a plant that exhibits thigmotropism.

Back

The Venus flytrap is an example of a plant that exhibits thigmotropism by closing its leaves when it senses an insect.

Front

What is the difference between positive and negative tropism?

Back

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

Front

What is the significance of tropisms in plants?

Back

Tropisms help plants optimize their growth and survival by responding to environmental conditions.