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Photosynthesis

Total questions: 40

Worksheet time: 24mins

Name
Class
Date
1.
What are the products of photosynthesis?
a)
water and carbon dioxide
b)
oxygen and glucose
c)
oxygen and carbon dioxide
d)
oxygen and water
2.
Which gas is removed from the atmosphere during photosynthesis?
a)
hydrogen
b)
oxygen
c)
nitrogen
d)
carbon dioxide
3.
Which statement about photosynthesis is correct?
a)
Plants get the energy they need for photosynthesis from water.
b)
Plants get the energy they need for photosynthesis from soil.
c)
Plants get the energy they need for photosynthesis from sunlight.
d)
Plants do not require energy to perform photosynthesis.
4.
The main source of energy for all life comes from ____.
a)
the Earth
b)
the moon
c)
the sun
d)
the food we eat/make
5.
Which sentence correctly describes photosynthesis. (assume there is enough sunlight)
a)
CO2 and water combine and make O2 and glucose
b)
O2 and water combine to make glucose and CO2
c)
O2 and CO2 combine to make water and glucose
d)
CO2 and glucose combine to make O2 and water
6.
What is the organelle that contains the chlorophyll used in photosynthesis ?
a)
mitochondria
b)
ribosome
c)
chloroplast
d)
nucleus
7.
What is the "waste" gas (product) produced during photosynthesis?
a)
oxygen
b)
nitrogen
c)
helium
d)
hydrogen
8.
What is the end product of photosynthesis ?
a)
carbon dioxide
b)
water
c)
glucose
d)
methane
9.
The raw ingredients (reactants) of photosynthesis are sunlight along with ?
a)
CO2 and H20
b)
CO2 AND C6H12O6
c)
oxygen and water
d)
oxygen and CO2
10.
What is the pigment molecule that absorbs the sunlight ?
a)
hemoglobin
b)
chlorophyll
c)
ATP
d)
ethyl alcohol
11.

What is the tiny openings that let in the carbon dioxide needed for photosynthesis?

a)

stomata

b)

xylem

c)

phloem

d)

chloroplast

12.
The leaf has a shiny, waxy cuticle around it to
a)
increase the rate of photosynthesis
b)
attract more light
c)
control water loss
d)
stop carbon dioxide and oxygen gases escaping
13.
Most of the chloroplast cells are found in the
a)
upper epidermis
b)
pallisade mesophyll layer
c)
lower epidermis
d)
stomata
14.
The important gases, carbon dioxide and oxygen, enter and leave the leaf through the
a)
upper epidermis
b)
phloem
c)
stomata
d)
guard cells
15.
Which structure helps prevent water loss and protects the leaf?
a)
Palisades mesophyll
b)
Spongy mesophyll
c)
Vascular tissue
d)
Cuticle
16.

What is letter "A" pointing to?

a)

cuticle

b)

upper epidermis

c)

lower epidermis

d)

palisade mesophyll

17.

What is letter "D" pointing to?

a)

upper epidermis

b)

palisade mesophyll

c)

spongy mesophyll

d)

bundle sheath

18.

Which of the following is pointing to the "guard cell"?

a)

B

b)

C

c)

D

d)

E

19.
Most of the chloroplast cells are found in the
a)
upper epidermis
b)
pallisade mesophyll layer
c)
lower epidermis
d)
stomata
20.

What is a variegated leaf?

a)

One that has chlorophyll in some bits and not in others

b)

A random leaf

c)

A leaf that has chlorophyll in all parts of it

21.

Why do we boil the leaf?

a)

To keep it warm

b)

To denature the enzymes and so stop photosynthesis

c)

To make photosynthesis go faster

22.

Why do we turn off the bunsen flame before adding ethanol?

a)

Not sure

b)

To save on gas

c)

Because ethanol is extremely flammable

23.

What is chlorophyll soluble in?

a)

Ethanol

b)

Water

c)

Don't Know

24.

To show that photosynthesis has occurred we test for starch. Why?

a)

Starch is a product of photosynthesis

b)

Not sure

c)

Glucose is a product of photosynthesis and is stored in the plant cells as starch

25.

If starch is present in the leaf, the leaf should turn what colour?

a)

Blue/Black

b)

Orange

c)

Red

26.

What do we use to test for starch?

a)

Fluorine solution

b)

Chlorine solution

c)

Iodine solution

27.

The chemical formula for glucose is

a)

CO2

b)

C6H12O6

c)

C6H6O6

d)

C6H6O12

28.

Which of these is the correct equation for photosynthesis?

a)

6O2 + C6H12O6 --> 6CO2 + 6H2O

b)

6O2 + 6CO2 --> C6H12O6 + 6H2O

c)

6CO2 + 6H2O --> 6O2 + C6H12O6

d)

6CO2 + 6H2O --> O2 + C6H12O6

29.
a. add iodine to the leaf
b. boil leaf in water
c. boil leaf in alcohol
d. rinse leaf in water
The correct sequence used to test a leaf for starch from the steps above is:
a)
a b c d
b)
b c d a
c)
c d a b
d)
d c a b
30.
Where on a variegated leaf will you find starch?
a)
White area
b)
Green area
c)
Pink area
d)
Yellow area
31.

Which of the following best summarizes photosynthesis?

a)

An adaptation of plants that allows them to add nutrients to the soil

b)

A chemical reaction involving nitrogen and other atmospheric gases

c)

A process by which plants produce sugar using the energy of sunlight

d)

An exchange of gases between animals and the air or water of their habitat

32.

When testing a leaf for starch why is it necessary to boil it in ethanol first?

a)

To break open the plant cells

b)

To release the starch form the cells

c)

To kill the plant cells

d)

To remove the green chlorophyll from the leaf

33.

The following are the steps in the starch test for a leaf. Which one lists the steps in order, from beginning to end?

a)

Dip in hot water, boil in ethanol, place on white tile, then add iodine solution

b)

Add iodine solution, place on white tile, boil in ethanot then dip in hot water

c)

Dip in hot water, place on white tile, add iodine solution then boil in ethanol

d)

Boil in ethanol, dip in hot water, add iodine solution then place on white tile

34.

During the Leaf Starch Test, the Bunsen burner must be turned off once the water heated because

a)

The leaf will over cook

b)

All the water will evaporate

c)

Iodine is flammable

d)

Ethanol is highly flammable

35.

What do plants take in through their ROOTS to make food (or carry out photosynthesis)?

a)

Carbon Dioxide

b)

Water

c)

Light

36.

What do plants take in through the STOMATA, which are found in the leaves, for photosynthesis?

a)

Carbon Dioxide

b)

Oxygen

c)

Light

37.

Why is leaf Y not able to make food?

a)

The leaf could not receive light.

b)

The leaf could not receive water.

c)

The leaf could not receive carbon dioxide.

38.

Why is leaf Z not able to make food?

a)

The leaf could not receive light.

b)

The leaf could not receive water.

c)

The leaf could not receive carbon dioxide.

39.

Both plants were watered daily. Which plant will be able to photosynthesize?

a)

Plant A only

b)

Plant B only

c)

Plant A and Plant B

40.

What part of a plant is adapted for photosynthesis?

a)

Flowers

b)

Roots

c)

Stem

d)

Leaves

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