U4 Plant Responses

What is the term for a plant's growth or movement in response to a stimulus?

• Photosynthesis

• Tropism

• Respiration

• Transpiration

Plants often grow toward the (a)   to better meet their energy needs.

• water

• sunlight

• soil

• wind

The stimulus that causes a plant to bend is (a)   . A) water B) sunlight C) soil D) nutrients.

• water

• sunlight

• soil

• nutrients

What is the big question in Chapter 7?

• How do plants grow?

• How do plants sense and respond to their environments?

• How do plants reproduce?

• How do plants make food?

What does the plant do when it is placed by a window?

• It wilts

• It bends toward the light

• It stops growing

• It loses leaves.

What is the term for a plant's growth response to gravity?

• Phototropism

• Gravitropism

• Hydrotropism

• Thigmotropism

What signals plant cells to grow in specific directions?

• Sunlight

• Water

• Structures in each plant cell

• Soil nutrients

If a seed is planted sideways, which direction will the shoot grow?

• Downward

• Upward

• Sideways

• In a circle

Fill in the blank: The growth of a plant part away from or toward the pull of gravity is a kind of (a)   .

• Tropism

• Photosynthesis

• Respiration

• Transpiration

Fill in the blank: A plant's parts respond to Earth's (a)   .

• Light

• Gravity

• Water

• Temperature