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photosynthesis

Total questions: 30

Worksheet time: 35mins

Name
Class
Date
1.

Which organelle is responsible making food (Glucose) using sunlight?

a)

Ribosomes

b)

Nucleus

c)

Chloroplast

d)

Mitochondria

2.

Select all that are raw materials for Photosynthesis.

a)

Water

b)

Carbon Dioxide

c)

Oxygen

d)

Sunlight (Light Energy)

e)

Glucose (Sugar/food)

3.

Select all that are products of Photosynthesis.

a)

Water

b)

Carbon Dioxide

c)

Oxygen

d)

Sunlight (Light Energy)

e)

Glucose (Sugar/food)

4.

What is the green pigment that "traps" sunlight?

a)

Chlorophyll

b)

Chloroplasts

c)

Photosynthesis

d)

ATP

5.

How does most of the water needed by the plant get into its leaves?

a)

It enters through the stomata

b)

The roots absorb it and then it travels up the xylem

c)

It's made during a chemical reaction in the stem

d)

The flowers capture water and deliver it to the leaves

6.
How does carbon dioxide get into the leaves of a plant?
a)
It's absorbed by the roots
b)
It's made in a chemical reaction in the stem
c)
It enters through the stomata
d)
It goes through the flowers
7.
Which of these conditions would decrease the rate of photosynthesis in a plant?
a)
Above average precipitation
b)
Changing the daylight hours from 14 hrs to 10 hrs
c)
Changing the CO2 concentration from 380 ppm to 410 ppm
d)
All of these choices
8.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
carbon dioxide + water --> oxygen + glucose
b)
carbon dioxide + glucose + water --> oxygen 
c)
oxygen + water --> carbon dioxide + glucose
d)
glucose+ oxygen ---> water + carbon dioxide 
9.

Look at the diagram. Which gas would most likely be found in the greatest amount in the bubbles?
a)
oxygen
b)
nitrogen
c)
ozone
d)
carbon dioxide
10.
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
11.
What is the main chemical compound that stores and releases energy?
a)
ATP
b)
Cytoplasm
c)
PTP
d)
Oxygen
12.
A leaf is the broadest part of the plant and this is good for photosynthesis because, the broad leaf....
a)
curls up when touched
b)
increases surface area
c)
catches rain water
d)
stores lipids for the plants
13.

Increasing the intensity of light had what effect on photosynthesis?

a)

It slowed it down

b)

It sped up

c)

It stayed the same

14.

Increasing the amount of CO2 did what to the rate of photosynthesis?

a)

Increased

b)

Decreased

c)

Stayed the same

15.

The ______ the temperature, the more photosynthesis can occur.

a)

higher

b)

lower

16.

Which of the following is NOT a limiting factor for photosynthesis? (It is not needed for photosynthesis)

a)

light

b)

oxygen

c)

carbon dioxide

d)

temperature

17.

Greenhouses keep plants warmer than the outside environment. What effect would this have?

a)

Plants die easier

b)

Plants do not grow as tall as plants that grow in the wild

c)

Plants can grow taller

d)

It has no effect

18.
How does temperature affect photosynthesis?
a)
Increases the rate at which enzymes work
b)
Gives the plant energy to perform photosynthesis
c)
Stops certain enzymes that interfere with photosynthesis working
19.
When it is chilly and raining outside, there is no photosynthesis taking place. What is the limiting factor?
a)
Temperature
b)
Rainfall
c)
Carbon Dioxide
20.
What is a limiting factor?
a)
The factor which increases the rate of a reaction
b)
The factor that limits the reaction rate
c)
The factor that limits the rate at which an enzyme is destroyed
21.
Which of these will not affect photosynthesis?
a)
Light
b)
Temperature
c)
Glucose Availability
d)
Carbon Dioxide
22.
How can greenhouses increase the rate of photosynthesis?
a)
Controlling and trapping heat to increase photosynthesis
b)
Stopping rainfall affecting plant growth
c)
Surrounding plants in the colour green makes them more likely to photosynthesise
d)
Plants are only given what they need instead of just taking everything they can find
23.
If carbon dioxide is completely removed from a plant’s environment, what would you expect to happen to the plant’s production of high-energy sugars (rate of photosynthesis)?
a)
Sugar production will likely increase.
b)
Sugars will not be produced.
c)
The rate of sugar production will decrease .
d)
Fewer sugars will be produced at first, but then the plant will recover.
24.

Which lettered graph represents the affect of light intensity on photosynthetic rate?

a)

A

b)

B

c)

C

d)

D

25.

Which lettered graph represents the effect of temperature on photosynthetic rate?

a)

A

b)

B

c)

C

d)

D

26.
Glucose (sugar) is also produced during photosynthesis. What do plants use glucose for?
a)
Source of energy.
b)
Supports plant growth and development.
c)
Keeps plants warm.
d)
Prevents plants from dying.
27.
How does temperature affects photosynthesis rate?
a)
As temperature increases, photosynthesis rate also increases.
b)
As temperature decreases, photosynthesis rate also decreases.
c)
Plants cannot photosynthesis if the temperature is too cold or too hot. 
d)
All of the statements are true.
28.

Which of the following organisms would NOT utilize photosynthesis for energy?

a)

Oak tree

b)

Holly bush

c)

Trout

d)

Red algae

e)

Spinach

29.

Which of these statements about photosynthesis is TRUE?

a)

Water is one product of photosynthesis.

b)

Oxygen is one product of photosynthesis.

c)

Chlorophyll is one product of photosynthesis.

d)

Carbon dioxide is one product of photosynthesis.

30.

What can be inferred from this experiment?

a)

Plants take in carbon dioxide and produce water vapor.

b)

Plants take in oxygen and produce water vapor

c)

Plants take in oxygen and give off carbon dioxide.

d)

Plants take in carbon dioxide and give off oxygen.

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