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Plant Responses Quiz

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

In the context of plant responses, what is the term for the orientation of plant parts in response to gravity?

a)

Hydrotropism

b)

Geotropism

c)

Thigmotropism

d)

Phototropism

2.

What is the specialized structure in plant cells that senses changes in light intensity and plays a role in phototropism?

a)

Amyloplast

b)

Chloroplast

c)

Photoreceptor

d)

Vacuole

3.

In the context of photoperiodism, what is the term for plants that flower in response to short days (long nights)?

a)

Long-day plants

b)

Short-day plants

c)

Day-neutral plants

d)

Intermediate-day plants

4.

Which hormone is responsible for the rapid leaf movements in response to touch or mechanical stimulation in plants?

a)

Gibberellin

b)

Ethylene

c)

Jasmonic Acid

d)

Touch Hormone (TH)

5.

Which plant response involves the curling of tendrils around a support structure, such as a twig or wire?

a)

Gravitropism

b)

Thigmotropism

c)

Phototropism

d)

Hydrotropism

6.

Which term refers to the directional growth response of a plant to a light stimulus?

a)

Phototropism

b)

Gravitropism

c)

Thigmotropism

d)

Hydrotropism

7.

What is the phenomenon called when plants respond to the length of the dark period to initiate flowering?

a)

Phototropism

b)

Thigmotropism

c)

Photoperiodism

d)

Hydrotropism

8.

In which part of the plant are statoliths involved in gravitropism primarily found?

a)

Roots

b)

Leaves

c)

Shoot tips

d)

Stems

9.

The folding of plant leaves in response to a decrease in turgor pressure is known as:

a)

Hydrotropism

b)

Thigmotropism

c)

Nastic movement

d)

Phototropism

10.

What is the term for the rhythmic, reversible bending of plant organs in response to the daily alternation of light and dark periods?

a)

Nutation

b)

Circadian rhythm

c)

Thigmotropism

d)

Photoperiodism