Tropisms and Hormones

What is thigmotropism?

• The movement of plants in response to touch

• The movement of plants toward the sun

• A prokaryote's movement inside the bloodstream

• The movement of plants in response to gravity

What makes a tropism positive or negative?

• Positive = movement towards stimulus, Negative = movement away from stimulus

• Negative = movement towards stimulus, Positive = movement away from stimulus

• Who cares? It doesn't matter whether it is positive or negative

• Positive = when a plant is happy, Negative = when a plant is sad

Stem has

• negative phototropism

• positive gravitropism

• Positive Phototropism

• no answer

If a plant grows toward a light source, then it is said to be displaying ____________?

• negative geotropism

• positive phototropism

• negative phototropism

Which type of tropism?

• hydrotropism

• thigmotropism

• phototropism

• geotropism

What is phototropism?

• The movement of plants towards light

• The movement of plants away from light

• The movement of plants in response to infrared light

• The movement of plants towards water

This example for

• Internal stimuli

• Thigmotropism

• Phototropism

• no answer correct

The growth of shoots and roots is controlled by a group of hormones called

• auxins

• stimulus

• response

• tropism

A growth movements towards a stimulus is called

• negative tropism

• positive tropism

• positive stimulus

• negative stimulus

A plant's growth movement in response to a stimulus

• stimulus

• reaction

• turgor pressure

• tropism