3.4: Factors Affecting Growth

a detectable change in the physical or chemical structure of an organism's internal or external environment

• stimuli

• hormone

• auxin

• tropism

• photoperiodism

chemicals that affect growth and development

• stimuli

• hormone

• auxin

• tropism

• photoperiodism

Tags

NGSS.MS-LS1-5

a plant's growth response toward or away from a stimulus

• stimuli

• hormone

• auxin

• tropism

• photoperiodism

a plant's response to seasonal changes in the length of night and day

• stimuli

• hormone

• auxin

• tropism

• photoperiodism

a plant hormone that speeds up the rate at which plant cells grow and control a plant's response to light

• stimuli

• hormone

• auxin

• tropism

• photoperiodism

a period when an organism's growth or activity stops

• dormancy

• metamorphosis

• essential

absolutely necessary; extremely important.

• dormancy

• metamorphosis

• essential

Tags

NGSS.2-LS2-1

NGSS.K-LS1-1

major body changes as an organism grows and develops into an adult

• dormancy

• metamorphosis

• essential

Roots grow downward because of gravity. Gravity is a __________.

• stimuli/stimulus

• tropism

• dormancy

• metamorphosis

• photoperiodism

Roots grow downward because of gravity. The growing of the roots downward is known as a __________.

• stimuli/stimulus

• tropism

• dormancy

• metamorphosis

• photoperiodism