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WorksheetsPlants
Total questions: 40
Worksheet time: 41mins
Name
Class
Date
1.
Certain flowers will open for twelve hours and then close. Which stimulus do the flowers respond to when they open and then when they close for that time period?
a)
light levels
b)
moon phases
c)
seasonal temperatures
d)
carbon dioxide levels
2.
How do the sprouts of seeds buried in complete dark in the soil find their way to the surface of the soil?
a)
They grow toward light.
They grow toward light.
b)
They grow toward surface warmth.
They grow toward surface warmth.
c)
They grow opposite the direction of the bedrock.
They grow opposite the direction of the bedrock.
d)
They grow opposite the direction of the pull of gravity.
3.
In which direction do the roots of plants grow?
a)
in the direction of moisture only
in the direction of moisture only
b)
in the direction of the pull of gravity only
in the direction of the pull of gravity only
c)
in the direction of water and the pull of gravity
in the direction of water and the pull of gravity
d)
in the direction of water and away from the pull of gravity
in the direction of water and away from the pull of gravity
4.
Which stimulus causes a responding plant to demonstrate phototropism?
a)
intensity of light
intensity of light
b)
direction of light
direction of light
c)
length of day
length of day
d)
time of day
time of day
5.
Plant growth is affected by environmental factors such as gravity. If a seed is allowed to sprout and grow while it is turned sideways, which will most likely occur?
a)
roots will grow downward, stems will grow downward
roots will grow downward, stems will grow downward
b)
roots will grow downward, stems will grow upward
roots will grow downward, stems will grow upward
c)
roots will grow upward, stems will grow downward
roots will grow upward, stems will grow downward
d)
roots will grow upward, stems will grow upward
roots will grow upward, stems will grow upward
6.
Which environmental stimulus causes leaves on certain trees to change color in autumn?
a)
loss of nutrients in the forest soil
loss of nutrients in the forest soil
b)
lower air humidity in the forest
lower air humidity in the forest
c)
changes to amount of light
changes to amount of light
d)
competition for survival
competition for survival
7.
Which external stimulus causes a plant to bend toward it?
a)
temperature
temperature
b)
amount of topsoil
c)
amount of water
d)
location of light
8.
When a plant wilts, the stomata close. How does this help the plant?
a)
It increases photosynthesis.
b)
It reduces further water loss.
c)
It increases cellular respiration.
It increases cellular respiration.
d)
It reduces water intake by roots.
It reduces water intake by roots.
9.
What would happen to the plant if it were turned away from the light source?
a)
The plant would stop growing.
b)
The plant would be unaffected.
c)
The plant would move away from the light source.
The plant would move away from the light source.
d)
The plant would bend towards the light source.
The plant would bend towards the light source.
10.
Tulips are flowers that typically bloom in the spring. How could tulips be forced to bloom in winter?
a)
by limiting pruning and trimming of the tulips
by limiting pruning and trimming of the tulips
b)
by reducing water levels and nutrient uptake by the tulips
c)
by elevating oxygen levels and supplying organic matter to the tulips
d)
by increasing temperature and lengthening daylight for the tulips
11.
A tulip growing in a pot is placed at the center of a table. Which of these nearby objects will the tulip grow toward?
a)
a sunny window
a sunny window
b)
an electric heater
c)
bowl of water
d)
a fan blowing gently
12.
Which is NOT a job of the root?
a)
to take in water
b)
to make food
c)
to take in nutrients
d)
to hold the plant in place
13.
The leaves...
a)
make seeds
b)
hold the plant in place
c)
look pretty in the fall
d)
make food
14.
Another job of the stem is...
a)
hold the plant in place
b)
make seeds
c)
move water and food throughout the plant
d)
attract bees and other pollinators
15.
Plants get their food from...
a)
bees
b)
hummingbirds
c)
their leaves
d)
deep in the earth
16.
This is the male part of the flower.
a)
Stamen
b)
Pistil
17.
The female reproductive parts of the plant.
a)
Stamens
b)
Pistils
18.
What plant part is shown here?
a)
roots
b)
flower
c)
stem
d)
leaf
19.
What plant part is shown here?
a)
roots
b)
flower
c)
stem
d)
leaf
20.
What plant part is shown here?
a)
roots
b)
flower
c)
stem
d)
leaf
21.
What plant part is shown here?
a)
roots
b)
flower
c)
stem
d)
leaf
22.
What is D?
a)
Anther
b)
Ovules
c)
Pollen Tube
d)
Stigma
23.
The sticky top of the pistil that collects pollen.
a)
stamen
b)
anther
c)
stigma
d)
pollen
24.
What part of the plant is #2?
a)
leaf
b)
flower
c)
stem
d)
root
25.
What part of the plant is #3?
a)
leaf
b)
root
c)
flower
d)
stem
26.
What part of the plant is #4?
a)
leaf
b)
flower
c)
stem
d)
root
27.
Gases pass in and out of a leaf through the what?
a)
vascular tissue
b)
mouth hole
c)
stomata
d)
cell wall
28.
What part of the flower will turn into a fruit?
a)
petal
b)
ovary
c)
ovule
d)
stamen
29.
The part of the flower that is under the petals
a)
Stem
b)
Roots
c)
Sepal
d)
Stalk
30.
What is the name of the process in which extra water exits the leaf?
a)
stomata
b)
epidermis
c)
transpiration
d)
photosynthesis
31.
A plant growing in response to the sunlight.
a)
Gravitropism
b)
Phototropism
c)
Thigmotropism
d)
Hydrotropism
32.
When a plant grows toward a stimuli it is known as:
a)
Positive
b)
Negative
33.
When a plant grows away from a stimuli it is called:
a)
Positive
b)
Negative
34.
Which of the following is an organism’s reaction to a change in its surroundings?
a)
response
b)
distraction
c)
stimulus
d)
development
35.
A stimulus is ___________
a)
a change in an organisms surroundings that causes a reaction
b)
process in which organisms grow larger.
c)
a reaction to a change in surroundings
d)
the result of sexual reproduction.
36.
How might the roots of a plant grow in space without gravity?
a)
only down
b)
only up
c)
all directions
d)
only sideways
37.
A period when a plant waits for conditions to be right for growth
a)
transpiration
b)
tropism
c)
dormancy
d)
photosynthesis
38.
A plant growing in response to the sunlight.
a)
Gravitropism
b)
Phototropism
c)
Thigmotropism
d)
Hydrotropism
39.
What is the correct stimulus for hydrotropism?
a)
Gravity
b)
Touch
c)
Water
d)
Sunlight
40.
What kind of stimulus causes plants to grow AWAY from it?
a)
Positive
b)
Negative
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