Multiple Choice
An organism’s reaction to a stimulus is called a ______. A. structure B. sensation C. tendril D. response
D. response
Touch
How would stems and leaves react to the light?
Stems and leaves grow toward the sun to grow.
What are the tendrils of a plant?
A. roots that grow out towards water
B. coil-like structures that cling to objects
C. tiny hairs that cover some types of leaves
D. parts of a stem that respond to light.
B. coil-like structures that cling to objects
The response of a vine that reaches light is to
A. cling to bark.
B. climb up trees.
C. spread out its leaves.
D. grows new roots.
C. spread out its leaves.
How does a plant know what season it is? A. It knows what kind of weather each season brings. B. It knows how long each season is supposed to last. C. It senses how many hours of daylight there are. D. It senses that it must be fall when it has lost its leaves.
C. It senses how many hours of daylight there are.
Roots growing downwards is an example of responding to
gravity/water
What happens after leaves STOP making chlorophyll?
The leaves change color and fall off.
_____ is an example of a stimulus.
A. Gravity
B. Light
C. Touch
D. all of the above
D. all of the above
Water is a stimulus that causes
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A. vines to climb up trees.
B. stems to grow upward.
C. roots to grow toward water.
D. tendrils to cling to buildings.
C. roots to grow toward water.
Plants can respond to all of these stimuli EXCEPT A. sight of a predator. B. presence of light. C. force of gravity. D. presence of water.
A. sight of a predator.
A tree's leaves falling during autumn, is a response to
seasons
What happens when to plants when the weather gets warmer?
Plants begin to grow flowers
During fall, a plant responds by
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A. creating new leaves.
B. not making chlorophyll.
C. producing flowers.
D. growing taller.
B. not making chlorophyll.
The tiny hairs in Venus flytraps respond to
A. gravity.
B. water.
C. touch.
D. light.
C. touch.
Which of the following is an example of a plant responding to the stimulus of touch? A. Trees grow flowers in the spring. B. Vines coil around trees. C. Roots grow down into the soil. D. Stems and leaves grow upward.
B. Vines coil around trees.
Leaves turning to face the sun is an example of responding to
sunlight.
What is a stimulus that makes a plant’s roots grow downwards.
Gravity
What stimulus decreases during winter?
A. gravity
B. water
C. touch
D. light
D. light
How long can a venus flytrap go without eating?
A: 1 month
B: 2 months
C: 3 months
D: 4 months
B: 2 months