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6.LS.2 Photosynthesis
Test Description: Basic concepts of photosynthesis and cellular respiration
Instructions: Answer all questions to get your test result.
1) Why are many plants green?
A
chlorophyll reflects green light
B
rigid cell walls are green
C
plants absorb green light
D
plant cells are green
2) What gas do plants take in to make food?
A
natural gas
B
oxygen
C
carbon dioxide
D
oxygen and carbon dioxide
3) By which process do plants make their own food from CO2 and H2O?
A
chlorophyll
B
photosynthesis
C
cellular respiration
D
transpiration
4) The process by which cells use oxygen to produce energy from food is called....( we do it all the time)
A
germination
B
transpiration
C
cellular respiration
D
photosynthesis
5) The energy that starts the process of photosynthesis comes from...
A
chlorophyll that is taken from the soil
B
grana
C
the breakdown of sugar in the plants
D
sunlight
6) Photosynthesis is important because...
A
plants need air to breathe
B
it makes the plants green
C
it is the process by which plants make their own food
D
without it, the Earth would all be a desert- We would all die!
7) During photosynthesis, what gas do plants release?
A
oxygen
B
nitrogen
C
carbon dioxide
D
water
8) The stoma allows what to enter and leave the leaf.
A
H2O, CO2 and O2
B
H2O
C
O2
D
none of the above
9) What happens to the water molecule during photosynthesis?
A
It splits and the O combines with the CO2 molecule
B
It is lost
C
It splits into H2 and O and the H2 combines with the CO2 molecule
D
It combines with the CO2
10) What are the two raw materials of photosynthesis?
A
CO2 and water
B
O2 and water
C
CO2 and O2
D
CO2 and hydrogen
*select an answer for all questions
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