Plant Responses to External and Internal Stimuli

A change in an organism’s external environment that causes a response from the organism.

• External Stimuli

• Internal Stimuli

• Energy Transformation

• Turgor Pressure

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A change in an organism’s internal environment that causes a response from the organism.

• External Stimuli

• Internal Stimuli

• Energy Transformation

• Turgor Pressure

The growth (or response) of a plant towards or away from LIGHT.

• Phototropism

• Geotropism

• Thigmotropism

• Hydrotropism

The growth (or response) of a plant towards or away from the Earth’s GRAVITY.

• Phototropism

• Geotropism

• Thigmotropism

• Hydrotropism

The growth (or response) of a plant towards or away from TOUCH.

• Phototropism

• Geotropism

• Thigmotropism

• Hydrotropism

The growth (or response) of a plant towards WATER.

• Phototropism

• Geotropism

• Thigmotropism

• Hydrotropism

What plant cell process is being shown in this video after the water is added to the soil?

• The plant cell vacuoles are filling with water and increasing turgor pressure.

• The plant cell vacuoles are losing water and decreasing turgor pressure.

• The plant cell vacuoles are loosing water and starting to collapse from gravitational pressure.

• The plant cell vacuoles are responding to light and forcing the plant to grow upwards.

Tags

NGSS.MS-LS1-2

How an organism reacts to a stimulus, usually resulting in a change of behavior. Example: A plant grows towards a window because of the light from the Sun.

• Stimulus

• Response

• Effect

• Force

Tags

NGSS.MS-LS1-8

A plant growing in soil with a lack of water will -

• grow away from the Sun.

• produce more attractive flowers.

• shut down the vascular system.

• increase glucose production in the leaves.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

While sitting in a room, a person notices that the temperature has become uncomfortably warm. The body will respond by -

• shivering.

• sweating.

• twitching.

• vomiting.