Plant Responses

A response that results in plant growth toward or away from a stimulus is a?

• Stimulus

• Tropism

• Photoperiodism

• Plant Hormone

The growth of a plant toward or away from light is called?

• Stimuli

• Phototropism

• Thigmotropism

• Geotropism

The growth of a plant in response to touch is?

• Stimuli

• Phototropism

• Thigmotropism

• Geotropism

The growth of a plant with or against gravity is called?

• Stimuli

• Phototropism

• Thigmotropism

• Geotropism

A plants response to the number of hours of darkness in its environment is called?

• Photoperiodism

• Phototropism

• Tropism

• Stimuli

Substances that act as chemical messengers within plants are called?

• Tropisms

• Stimuli

• Plant Hormones

• Nerves

This plant hormone was one of the first plant hormones discovered, it is responsible for phototropism, the growth of a plant toward light. This hormone concentrates on the dark side of the plant's stem.

• Auxin

• Ethylene

• Gibberellins

• Cytokinins

Tags

NGSS.MS-LS1-5

This plant hormone helps stimulate the ripening of fruit. It is a gas that can be produced by fruits, seeds, flowers, and leaves. It can cause other fruits to ripen or even rot, and can also cause plants to drop their leaves.

• Auxin

• Ethylene

• Gibberellins

• Cytokinins

Rapidly growing areas of a plant, such as roots and stems, produce this hormone. These hormones increase the rate of cell division and elongation.

• Auxins

• Ethylene

• Gibberellins

• Cytokinins

Root tips produce this hormone which increases the rate of cell division and can also slow the aging process of flowers and fruits.

• Auxins

• Ethylene

• Gibberellins

• Cytokinins