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Worksheets7 Plants
Total questions: 25
Worksheet time: 12mins
Name
Class
Date
1.
The function of the chloroplast is ...
a)
support and protect
b)
control center
c)
photosynthesis
d)
control what goes in and out
2.
What force causes a seedling to emerge from the ground?
a)
turgor pressure
b)
light
c)
gravity
d)
photosynthesis
3.
What structure of a plant transports water?
a)
xylem
b)
phloem
c)
stomata
d)
chloroplast
4.
Which is the chemical equation for photosynthesis?
a)
hydrogen sulfide + oxygen + carbon dioxide --> glucose + sulfur + water
b)
glucose + oxygen --> carbon dioxide + water
c)
carbon dioxide + water --> glucose + oxygen
d)
iron + oxygen + water --> iron oxide
5.
The stem is showing...
a)
negative phototropism
b)
positive geotropism
c)
positive phototropism
d)
positive thigmotropism
6.
What is the external stimulus pictured?
a)
heat
b)
light
c)
touch
d)
water
7.
What process produces chemical energy from radiant energy?
a)
photosynthesis
b)
combustion
c)
phototropism
d)
respiration
8.
How does a plant survive when there is no sunlight?
a)
grow new leaves
b)
produce emergency sugars
c)
store water
d)
use stored sugars
9.
Where is radiant energy converted to chemical energy?
a)
sun
b)
grass
c)
mouse
d)
hawk
10.
Trees in a forest grow very tall with few branches. The same species in an open area are much shorter with many branches. Which stimulus would trigger this response?
a)
light reaching the tree
b)
nutrients in the soil
c)
water in the ground
d)
wind striking the tree
11.
What is pictured?
a)
photosynthesis
b)
emergence of a seedling
c)
thigmotropism
d)
hydrotropism
12.
A student set up the experiment pictured. Predict the plant response.
a)
grow away from the light
b)
not respond to the light
c)
bend and grow towards the light
d)
not grow at all
13.
What type of energy transformation is occurring in the diagram?
a)
radiant to chemical energy
b)
chemical to mechanical energy
c)
thermal to electrical energy
d)
chemical to radiant energy
14.
A student wants to prove that plants need light to make food and grow properly. Which experimental design is best?
a)
use 1 healthy plant, put it in the dark. Water regularly
b)
use 2 plants, one in dark and one near sunlight. Water both regularly
c)
use 2 plants, put each in dark and light for half the day. Water both regularly.
d)
use 3 plants; put one in dark, one near sunlight, and one in shade. Water the plant in the light only.
15.
Why can plants stand upright?
a)
geotropism pull of the sun
b)
water inside vacuoles creates turgor pressure
c)
lack of water in vacuoles creates turgor pressure
d)
gravitational pull of the Earth
16.
Compare the plants pictured.
a)
they have the same amount of turgor pressure
b)
not enough information to compare
c)
left has less turgor pressure
d)
left has more turgor pressure
17.
If a potted plant were knocked on its side and left there, predict how it would grow.
a)
stem and roots grow out opposite
b)
stem and roots will grow up
c)
stem grows up, roots grow down
d)
stem grows out, roots grow down
18.
What pigment captures radiant energy from the sun?
a)
chlorophyll
b)
pistil
c)
chloroplast
d)
stomata
19.
What causes a plant to wilt?
a)
less water in the vacuole
b)
more water in the vacuole
20.
What is pictured?
a)
thigmotropism
b)
gravitropism
c)
phototropism
d)
geotropism
21.
Predict the plant for B the flaccid cell.
a)
stem stands upright
b)
stem bends or wilts
22.
What is pictured?
a)
phototropism
b)
thigmotropism
c)
hydrotropism
d)
geotropism
23.
What is pictured?
a)
phototropism
b)
hydrotropism
c)
geotropism
d)
thigmotropism
24.
What are the products of photosynthesis?
a)
glucose & oxygen
b)
carbon dioxide & water
c)
glucose
d)
oxygen
25.
What are the reactants of photosynthesis?
a)
glucose & oxygen
b)
carbon dioxide & water
c)
carbon dioxide
d)
water
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