Plants STAAR

What is an example of a stimulus for plants?

• Touch

• Light

• Gravity

• Water

• all of the above

Tags

NGSS.MS-LS1-6

When the plant grows toward the light.

• Negative hydrotropism

• Positive geotropism

• Negative phototropism

• Positive phototropism

Tags

NGSS.MS-LS1-5

What type of tropism response to water?

• Hydrotropism

• Geotropism

• Thigmotropism

• Phototropism

Tags

NGSS.MS-LS2-1

A vine plant brushes against a fence and wraps itself around the fence. To what stimulus is the plant responding?

• phototropism

• hydrotropism

• thigmotropism

• geotropism

Plant’s roots grow down, anchoring it into the soil. To what stimulus is the plant responding?

• thigmotropism

• hydrotropism

• phototropism

• geotropism

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 type of tropism is occurring here?

• Phototropism

• Thigmotropism

• Geotropism

• Hydrotropism

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

• Thigmotropism

• Phototropism

• Geotropism

• Nastic movement

is a plant with unusual leaves that close when a stimulus, such as a fly, brushes against hairs on the leaf.

• Poinsettia

• Rose

• Venus flytrap

• Carnation

Tags

NGSS.MS-LS1-4

If a plant gets light from only one direction the shoots will.....

• grow straight up

• grow down

• grow toward the light source

• grow faster

Tags

NGSS.MS-LS2-1