Plant Tropisms

What is the plant's response to touch from another object known as?

• Thigmotropism

• Phototropism

• Hydrotropism

• Gravitropism

Phototropism is a plant response to...

• water

• gravity

• light

• nutrients

What is the difference between positive and negative tropism?

• Positive tropism is growth towards a stimulus, while negative tropism is growth away from a stimulus.

• Positive tropism is growth away from a stimulus, while negative tropism is growth towards a stimulus.

• Positive tropism occurs only in animals, while negative tropism occurs only in plants.

• Both positive and negative tropism refer to growth towards a stimulus.

In which direction does gravity make the roots grow?

• up

• sideways

• down

• backward

What is gravitropism?

• The growth response of a plant to gravity.

• The process by which plants absorb water from the soil.

• The ability of plants to produce flowers in response to sunlight.

• The mechanism by which plants store energy during photosynthesis.

Tags

NGSS.MS-LS1-5

How does phototropism benefit plants?

• It helps plants maximize light absorption for photosynthesis.

• It allows plants to grow faster in the dark.

• It prevents plants from wilting in dry conditions.

• It enables plants to reproduce more effectively.

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NGSS.MS-LS1-6

What environmental factors can affect plant tropisms?

• Temperature, humidity, and soil type

• Light, gravity, moisture, and touch

• Wind speed, altitude, and pH level

• Nutrient availability, carbon dioxide, and salinity

What is hydrotropism?

• The growth response of plants to moisture gradients.

• The movement of plants towards sunlight.

• The process of plants absorbing nutrients from the soil.

• The reaction of plants to temperature changes.

Tags

NGSS.MS-LS2-1

How do plants sense gravity?

• Through specialized cells called statocytes that contain statoliths.

• By using their leaves to detect changes in light.

• Through their roots sensing moisture levels in the soil.

• By responding to temperature changes in their environment.

What is phototropism?

• The movement of plants towards light.

• The process of photosynthesis in plants.

• The growth of plants in the absence of light.

• The ability of plants to survive in extreme conditions.

Tags

NGSS.MS-LS2-1