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