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Photosynthesis
Test Description: Grades 6-8 Life Science
Instructions: Answer all questions to get your test result.
1) Glucose is a type of ___.
A
fiber
B
sugar
C
fat / lipid
D
protein
2) ___ are the plant organ that absorbs water.
A
leaves
B
roots
C
flowers
D
stems
3) ___ are the plant organ used to transport water, food, minerals throughout the plant.
A
roots
B
stems
C
leaves
D
flowers
4) ___ are the plant organs used to make food.
A
flowers
B
leaves
C
stems
D
roots
5) ___ is the process plants use to make their own food.
A
germination
B
photosynthesis
C
pollination
D
transpiration
6) Since plants can create their own food, they are often called ___.
A
synthesizers
B
producers
C
decomposers
D
consumers
7) In which part of a plant cell does photosynthesis happen?
A
mitochondria
B
nucleus
C
vacuole
D
chloroplast
8) The ORIGINAL source of all energy for living things is ___ - because of photosynthesis.
A
the Sun
B
food
C
the ocean
D
Earth's core
9) What two substances must plants absorb for photosynthesis to happen?
A
carbon dioxide and water
B
carbon dioxide and oxygen
C
oxygen and water
D
glucose and oxygen
10) What substance do plants make as food using photosynthesis?
A
sucrose
B
oxygen
C
glucose
D
chlorophyll
11) Which of the following is the correct chemical equation for photosynthesis?
A
CO₂ + O₂ + sunlight → C₆H₁₂O₆ + H₂O
B
CO₂ + H₂O + sunlight → C₆H₁₂O₆ + O₂
C
CO₂ + C₆H₁₂O₆ + sunlight → H₂O + O₂
D
H₂O + O₂ + sunlight → C₆H₁₂O₆ + CO₂
12) Which of the following is the correct word equation for photosynthesis?
A
water + oxygen + sunlight ---- glucose + carbon dioxide
B
glucose + carbon dioxide + sunlight ---- water + oxygen
C
carbon dioxide + water + sunlight ---- glucose + oxygen
D
carbon dioxide + oxygen + sunlight ---- glucose + water
13) Which substance is leftover as waste after photosynthesis?
A
water
B
glucose
C
carbon dioxide
D
oxygen
14) Photosynthesis mostly happens in ___ .
A
all living things
B
animals
C
plants and animals
D
plants
15) Photosynthesis ___ energy.
A
creates
B
destroys
C
stores
D
releases
16) Ultimately, the ORIGINAL source of nearly all energy in living things is ___ - because of photosynthesis.
A
food
B
the Sun
C
Earth's core
D
ocean currents
17) What would happen to a plant if it could not photosynthesize?
A
it would wilt / droop
B
it would grow VERY slowly
C
it would not affect the plant
D
it would die of starvation
18) What green chemical do plants use to capture the energy in sunlight?
A
chloroform
B
chloroplast
C
chlorophyll
D
carotenoid
*select an answer for all questions
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