Plant Tropisms and Nastic Movements Flashcard

Front

What is the term for the turning or bending of a plant in response to a touch stimulus?

Back

Thigmotropism

Front

List the order of plant responses according to the following types: Gravitropism, Thigmotropism, Phototropism.

Back

Gravity, Touch, Light

Front

What is the term for the growth of plant roots in response to water availability?

Back

Hydrotropism

Front

Which plant hormone is primarily responsible for regulating growth and tropic responses?

Back

Auxin

Front

What is the term for the growth of a plant in response to gravity?

Back

Gravitropism (Geotropism)

Front

What is phototropism?

Back

The growth of a plant in response to light direction.

Front

How does thigmotropism benefit climbing plants?

Back

It allows them to attach and grow towards support structures.

Front

What is the role of auxin in plant tropisms?

Back

Auxin promotes cell elongation on the side of the plant away from the stimulus, causing bending.

Front

What is the difference between tropisms and nastic movements?

Back

Tropisms are directional growth responses to stimuli, while nastic movements are non-directional responses.

Front

Give an example of a plant exhibiting gravitropism.

Back

Roots growing downward in response to gravity.