Plant Responses

Multiple Choice

The word Tropism mean_________

• growth in response to stimuli

• to create something new

• Chemical energy

• Taproot system

Multiple Choice

The plant is following the light.

• Phototropism

• Thigmotropism

• Hydrotropism

• Geotropism

Multiple Choice

What does it mean if a plant has a POSITIVE phototropism?

• That the plant grows toward light.

• That the plant grows away from light.

• That the plant grows toward gravity.

• That the plant grows away from gravity. 

Multiple Choice

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

Multiple Choice

Changes in an organism's environment that cause a response

• Tropism

• Hormone

• Stimuli

• Response

Multiple Choice

Gravitropism is....

• The process of a plant responding to touch

• The process of a plant responding to light

• The process of a plant responding to gravity

• The process of a plant responding to water

Multiple Choice

What does it mean if a plant has a POSITIVE gravitropism?

• That the plant grows toward light.

• That the plant grows away from light.

• That the plant grows toward gravity.

• That the plant grows away from gravity. 

Multiple Choice

The shoot of a plant growing up. 

• Positive Gravitropism 

• Negative Gravitropism 

• Thigmotropism

• Hydrotropism

Multiple Choice

Poison Ivy growing on a tree by touch.

• Gravitropism 

• Phototropism

• Thigmotropism

• Hydrotropism

Multiple Choice

Plants that have no specific amount of daylight required to flower.

• Auxin

• Short day plant

• Long day plant

• Day neutral plant

Multiple Choice

Plants that need 10 hours or less of darkness to flower.

• Photoperiodism

• Short day plant

• Long day plant

• Day neutral plant

Multiple Choice

Long-Day and Short-Day plants are examples of flowering responses in response to?

• Photoperiodism

• Tropism

• Geotropism

• Thigmotropism

Multiple Choice

Plants that flower when exposed to darkness more than 12 hours of darkness are called ______________.

• long-day plants

• short-day plants

• day-neutral plants

• none of the above

Multiple Choice

Where is auxin formed

• Tip of stem and root

• Leaves

• Embryo

• All

Multiple Choice

Where is auxin formed

• Tip of stem and root

• Leaves

• Embryo

• All

Multiple Choice

Which plant hormone is a gas?

• auxin

• gibberellin

• ethylene

• cytokinin

Multiple Choice

Causes the enlargement of fruits

• abscisic acid

• auxin

• cytokinins

• gibberellin

• ethylene

Multiple Choice

My banana has become black and soft. This is because of

• Auxins

• Cytokinins

• Ethylene

• Abscisic acid

• Gibberellins

Multiple Choice

My tomato seed wont grow. Which hormones can I use to make it start growing?

• Auxins

• Cytokinins

• Ethylene

• Abscisic acid

• Gibberellins

Multiple Choice

I want to stop my plant from growing so tall. I want it to grow from the sides. Which hormone should I STOP using?

• Auxins

• Cytokinins

• Ethylene

• Abscisic acid

• Gibberellins