Plant Responses and Adaptations

Light, heat, and other things that produce a response are examples of a(n) ________________.

• tropism

• stimulus

• gravity

• chemical

Tags

NGSS.MS-LS1-8

A plant's movement toward or away from a stimulus is called _________________.

• stimulus

• gravity

• auxin

• tropism

Plant roots grow downward in response to ______________.

• stimulus

• tropism

• gravity

• chemical

Tags

NGSS.MS-LS1-5

The response of a place to changes in light is called _______________.

• hydrotropism

• phototropism

• thigmotropism

• gravitropism

The roots of a willow tree show ______________ as they grow toward a water source.

• hydrotropism

• gravitropism

• geotropism

• phototropism

In Darwin's experiment, the plant shoots with _______ turned toward light, while the plants without tips did not.

• sunlight

• tips

• auxin

• water

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

Scientist Frits Went believed that a(n) ______________ allowed the plant shoots to bend toward light.

• gravity

• water

• chemical

• light

Chemicals that stimulate plant growth are called _______________.

• soil

• bacteria

• virus

• auxin

The plant shoots bend toward light because auxins cause cell growth on the __________ of the stem, making it longer.

• right side

• left side

• dark side

• light side

Tags

NGSS.MS-LS1-5

Adaptations help plants survive in many kinds of __________________.

• pots

• environment

• water

• fertilizer

Tags

NGSS.MS-LS1-5

NGSS.MS-LS4-4