Plant Tropisms Flashcard

Front

What is a tropism?

Back

A plant's response to environmental stimuli

Front

What type of response do plant roots show to gravity?

Back

Positive gravitropism

Front

What is phototropism?

Back

A plant’s growth towards or away from light

Front

What hormone is responsible for controlling tropisms in plants?

Back

Auxin

Front

What is true about auxins in shoots?

Back

Auxins accumulate on the shaded side of the shoot

Front

How do auxins affect root growth in response to gravity?

Back

They inhibit growth on the lower side of the root

Front

Which experiment investigates phototropism?

• Beans in petri dishes in the dark
• Seedlings placed under different light conditions
• Seeds planted in different soil types
• Plants watered with varying amounts of water

Back

Seedlings placed under different light conditions

Front

In a phototropism experiment, what happens if the shoot tip is removed from a plant?

Back

The plant will stop growing

Front

What is the role of a clinostat in a gravitropism experiment?

Back

To cancel the effects of gravity on the plant

Front

Which part of a plant shows positive phototropism?

Back

Shoots