Plant Responses to Stimuli Chapter 7

_____________ are any changes in an organism's environment that cause a response.

• Stimuli

• tropism

• photoperiodism

• plant hormones

Tags

NGSS.MS-LS1-8

______________is a response that results in plant growth toward or away from a stimulus.

• Stimuli

• gravity

• weather

• tropism

_________________ is a plant's response to the number of hours of darkness in its environment.

• plant hormones

• tropism

• night

• photoperiodism

The substances that act as chemical messengers in a plant is called a?

• stimuli

• tropism

• plant hormones

• touch

What kind of plant would be considered a long-day plant?

• Plants that flower when exposed to less than 10-12 hours of darkness.

• plants that require 12 or more hours of darkness for seeding to begin.

• Plants that flower when they reach maturity.

• There is no such thing as a long-day plant.

Which type of plant hormone causes fruit to ripen?

• auxins

• polystyrene

• ethylene

• carbohydrates

Which type of plant hormone cause increased plant growth.

• auxins

• ethylene

• fertilizer

• stimuli

When a plant grows toward a stimuli, what kind of response is that?

• negative response

• positive response

• neutral response

• not any kind of response, it's just the way things happen.

Growth responses in plant includes light, gravity, and _______?

• weather

• smell

• darkness

• touch

Tags

NGSS.MS-LS1-5

_________________are hormones that increase the rate of cell division and cell elongation?

• Cytokinins

• Xylem

• Phloem

• Gibberellins