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OSE 7.4 - Lessons 1-5 Test

Total questions: 25

Worksheet time: 17mins

Name
Class
Date
1.
What is the primary role of photosynthesis in plants?
a)
A. Producing oxygen for animals
b)
B. Breaking down food for energy
c)
C. Recycling nutrients in the soil
d)
D. Converting light energy into food
2.
What is the main source of carbon in food molecules produced by plants?
a)
A. Water
b)
B. Soil nutrients
c)
C. Carbon dioxide
d)
D. Oxygen
3.

A molecule made up of amino acids is?

a)
fat
b)
carbohydrates
c)
proteins
d)
food molecules
4.
The growth of plants without nutrients from soil
a)
hydroponics
b)
cellular respiration
c)
energy
d)
mitochondria
5.
A green organelle, present in plant cells, where photosynthesis takes place
a)
chloroplasts
b)
mitochondira
c)
glucose
d)
producer
6.
Which of these are plant inputs for photosynthesis?
a)
water
b)
carbon dioxide
c)
sunlight
d)
oxygen
7.
Where does the water enter a plant?
a)
through the roots
b)
through the stems
c)
through the leaves
8.
What is the name of the simple sugar that is produced in photosynthesis?
a)
sucrose
b)
dextrose
c)
glucose
d)
lactose
9.
Where does photosynthesis take place?
a)
the leaves
b)
the roots
c)
the stems
10.
What are stomata?
a)
fruits
b)
little holes on the underside of the leaf surface
c)
tiny root hairs
d)
another word for chloroplasts
11.
What is the ultimate ORIGINAL source of energy for living things
a)
sugar
b)
sun
c)
moon
d)
carbon dioxide
12.
Leaves look green because.....
a)
they eat their vegetables
b)
to blend into their environment
c)
they contain a molecule named chlorophyll
d)
they are sick
13.
Which gas is removed from the atmosphere during photosynthesis?
a)
hydrogen
b)
oxygen
c)
nitrogen
d)
carbon dioxide
14.

Plants create their own (a)   molecules through photosynthesis.

15.

Whole food molecules do not enter or exit plants.

a)

True

b)

False

16.

What are the structures on the surface of leaves called in which gases can enter and exit?

a)

Chloroplasts

b)

Stomata

c)

Roots

d)

Cellular Respiration

17.

What structures in plant cells move around in response to sunlight?

a)

Chloroplasts

b)

Stomata

c)

Mitochondria

d)

Cell membrane

18.

What is a chemical reaction?

a)

cells blow up and create new cells

b)

molecules break apart and atoms are rearranged to create new stuff.

c)

two chemicals mixed together make two new chemicals

d)

All chemical reactions need sunlight in order to work.

19.

What chemical reaction is happening here?

(a)  

20.

Which of the following are plant INPUTS?

a)

Oxygen

b)

Carbon Dioxide

c)

Water

d)

Sunlight

e)

Food Molecules

21.

Which of the following are plant OUTPUTS? (Physically leave the plant)

a)

Oxygen

b)

Carbon Dioxide

c)

Water

d)

Sunlight

e)

Hydroponic Plant Food

22.

Which atoms make up the glucose molecule?

a)

hydrogen

b)

nitrogen

c)

carbon

d)

oxygen

e)

sulfur

23.

Plants use PARTS of their inputs to create food molecules.

a)

TRUE

b)

FALSE

24.

Sunlight is matter.

a)

TRUE

b)

FALSE

25.

Found only in plants, this provides support and structure.

a)

Cell Membrane

b)

Chloroplast

c)

Nuclear Membrane

d)

Cell Wall

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