stimuli and responses in plant

Tropism is a directional response of plants to ________________.

What is stimuli?

• changes in an organism’s environment that cause a response.

• plant’s response to the number of hours of darkness in its environment.

• substances that act as chemical messengers within plants.

• growth toward a stimulus.

What is an example of a stimulus for plants?

• Touch

• Light

• Gravity

• Water

• all of the above

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-5

NGSS.MS-LS2-1

what type of tropism is occurring here?

• Phototropism

• Thigmotropism

• Gravitropism

• Hydrotropism

What type of tropism is occurring here?

What type of tropism is occurring here?

Mimosa sp. responds to touch by folding its leaves inwards when touched. The responds occurs rapidly.

• Thigmotropism

• Phototropism

• Geotropism

• Nastic movement

When the plant grows toward the light.

• Negative hydrotropism

• Positive geotropism

• Negative phototropism

• Positive phototropism

A stimulus is ___________

• a change in an organisms surroundings.

• process in which organisms grow larger.

• a reaction to a change in surroundings

• tropism

Which of the following plants response towards touch?

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