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LEAF STRUCTURE

Total questions: 139

Worksheet time: 2hrs 4mins

Name
Class
Date
1.
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
2.
Most of the chloroplast cells are found in the
a)
upper epidermis
b)
pallisade mesophyll layer
c)
lower epidermis
d)
stomata
3.
The water needed for photosynthesis comes into the leaves through the
a)
upper epidermis
b)
stomata
c)
guard cells
d)
xylem cells
4.
The important gases, carbon dioxide and oxygen, enter and leave the leaf through the
a)
upper epidermis
b)
phloem
c)
stomata
d)
guard cells
5.
The role of the guard cell is to
a)
help control the temperature of the plant
b)
control how much water enters the leaf
c)
control how much glucose is stored
d)
control the movement of water vapour & gases 
6.
Which structure helps prevent water loss and protects the leaf?
a)
Palisades mesophyll
b)
Spongy mesophyll
c)
Vascular tissue
d)
Cuticle
7.

What is the name of the elongated, packed cells (part G) directly under the upper epidermis?

a)

Palisade cells

b)

Guard cell

c)

Spongy layer

d)

Lower epidermis

8.

What is letter "A" pointing to?

a)

cuticle

b)

upper epidermis

c)

lower epidermis

d)

palisade mesophyll

9.

Which number is pointing to the xylem of the leaf?

a)

3

b)

4

c)

5

d)

6

10.

Which number is pointing to the stomata?

a)

6

b)

7

c)

8

d)

9

11.

Which part of the leaf consists of xylem and phloem?

a)

vascular bundle

b)

bundle sheath

c)

palisade mesophyll

d)

spongy mesophyll

12.

Most photosynthesis occurs in this part of the leaf:

a)

upper epidermis

b)

cuticle

c)

palisade mesophyll

d)

spongy mesophyll

13.

The outermost layer of CELLS of the leaf is the

a)

cuticle

b)

epidermis

c)

spongy mesophyll

d)

bundle sheath

14.

This layer of cells is where photosynthesis occurs within the leaf; there are air spaces within this layer

a)

spongy mesophyll

b)

palisade mesophyll

c)

chloroplast

d)

upper epidermis

15.

The cell organelle where photosynthesis occurs in plant cells is the

a)

chloroplast

b)

mitochondrion

c)

vacuole

d)

nucleus

16.

The vascular tissue which transports sugar (food) in both directions within the leaf is the

a)

xylem

b)

phloem

c)

bundle sheath

d)

chloroplast

17.

Which two layers of the plant contain chloroplasts?

a)

xylem and phloem

b)

upper and lower epidermis

c)

cuticle and upper epidermis

d)

palisade and spongy mesophyll

18.

The majority of the stomata of a leaf can usually be found within the

a)

guard cells

b)

upper epidermis

c)

lower epidermis

d)

cuticle

19.

The stomata are controlled by '________' shaped' guard cells

a)

Kentucky Fried Chicken

b)

Sausage

c)

Banana

d)

Pear

20.

So from top to bottom, a leaf's structure is

a)
  1. Palisade cells
  2. Waxy cuticle and epidermis cells
  3. Spongy mesophyll
  4. Epidermis and cuticle, with stomata
b)
  1. Waxy cuticle and epidermis cells
  2. Palisade cells
  3. Spongy mesophyll
  4. Epidermis and cuticle, with stomata
c)
  1. Epidermis and cuticle, with stomata
  2. Waxy cuticle and epidermis cells
  3. Palisade cells
  4. Spongy mesophyll
d)
  1. Waxy cuticle and epidermis cells
  2. Spongy mesophyll
  3. Palisade cells
  4. Epidermis and cuticle, with stomata
21.
The important gases, carbon dioxide and oxygen, enter and leave the leaf through the
a)
upper epidermis
b)
phloem
c)
stomata
d)
guard cells
22.
Which structures open and close stomata to allow gas exchange but prevent water loss in leaves?
a)
Epidermis
b)
Vascular tissue
c)
Guard cells
d)
Spongy mesophyll
23.

Plants make food through photosynthesis

a)

True

b)

False

24.

Using their __________, plants combine sunlight, carbon dioxide and water to make glucose and oxygen

a)

Flowers

b)

Leaves

c)

Stem

d)

Roots

25.

There are little pores on the bottom of the leaf called ________

a)

stem

b)

root

c)

stomata

d)

palisade mesophyll

26.

'___________' comes into the plant through the roots

a)

Oxygen

b)

Water

c)

Carbon Dioxide

d)

Goku

27.

What is the function of the leaf on the plant?

a)

Absorbs water

b)

Absorbs Nutrients

c)

Photosynthesis

d)

Anchors the plant

28.

Number 3 is...

a)

Node

b)

Internode

c)

Petiole

d)

Axillary Bud

29.

Number 5 is...

a)

Blade

b)

Margin

c)

Midrib

d)

Serrate

30.

Why are plants important for all other living organisms?

a)

They are important for making our environment look attractive.

b)

They are important predators for other organisms.

c)

They are important consumers of other organisms.

d)

Without them, food chains would fail as plants are the producers.

31.

Why do leaves need a large surface area?

a)

To absorb as much water as possible.

b)

To absorb as much sunlight as possible.

c)

To absorb as much food as possible.

d)

To absorb as much chlorophyll as possible.

32.

What is the function of the midrib?

a)

It provides strength throughout the leaf, keeping it upright and sturdy in the wind.

b)

It provides sunlight to the leaf for it to carry out photosynthesis.

c)

It attaches the leaf to the plant’s stem.

d)

It is tiny openings or pores, which allow carbon dioxide to enter and oxygen to exit the leaf.

33.

What is the function of the petiole?

a)

It provides strength throughout the leaf, keeping it upright and sturdy in the wind.

b)

It provides sunlight to the leaf for it to carry out photosynthesis.

c)

It attaches the leaf to the plant’s stem.

d)

It is tiny openings or pores, which allow carbon dioxide to enter and oxygen to exit the leaf.

34.

What is the function of the stomata?

a)

It provides strength throughout the leaf, keeping it upright and sturdy in the wind.

b)

It provides sunlight to the leaf for it to carry out photosynthesis.

c)

It attaches the leaf to the plant’s stem.

d)

They are is tiny openings or pores, which allow carbon dioxide to enter and oxygen to exit the leaf.

35.

Why are leaves thin?

a)

To allow as much water as possible into the leaf.

b)

To minimise the distance for carbon dioxide to travel into leaf cells.

c)

To allow as much water as possible out of the leaf.

d)

To allow as much sunlight as possible to hit the leaf surface.

36.

What is letter "D" pointing to?

a)

upper epidermis

b)

palisade mesophyll

c)

spongy mesophyll

d)

bundle sheath

37.

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

a)

B

b)

C

c)

D

d)

E

38.

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 stem

c)

It's made during a chemical reaction in the leaf

d)

The flowers capture water and deliver it to the leaves

39.
Which choice correctly shows the gases that enter and exit plants during photosynthesis?
a)
Enter: Oxygen
Exit: Carbon dioxide
b)
Enter: Water vapor
Exit: Glucose
c)
Enter: Carbon dioxide
Exit: Oxygen
d)
Enter: Light
Exit: Water vapor
40.

Which of the following is the correct equation for PHOTOSYNTHESIS?

a)

light + carbon dioxide + water --> glucose + oxygen

b)

carbon dioxide + sugar + water --> oxygen + light

c)

oxygen + light + water --> carbon dioxide + sugar

d)

carbon dioxide + oxygen + water --> Light+ Sugar

41.

Diagram 1 shows 4 needs of photosynthesis. What is P?

a)

Carbon dioxide

b)

Water

c)

Chlorophyll

d)

Sunlight

42.

Diagram 1 shows 4 needs of photosynthesis. What is P?

a)

Carbon dioxide

b)

Water

c)

Chlorophyll

d)

Sunlight

43.

What is the meaning of photosynthesis?

a)

A process of plants to produce Oxygen

b)

A process of plants to make their on food

44.

Based on the picture, what is Q?

a)

Water

b)

Carbon dioxide

c)

Chlorophyll

d)

Sunlight

45.

What is the function of chlorophyll in plants?

a)

To absorb sunlight

b)

To produce Oxygen

c)

To absorb nutrients

46.

What is S?

a)

Air

b)

Water

c)

Carbon dioxide

d)

Chlorophyll

47.

What is R?

a)

Water

b)

Nutrient

c)

Leaf

d)

Chlorophyll

48.

What are the products of photosynthesis?

a)

Carbon dioxide and glucose (starch)

b)

Oxygen and glucose (starch)

c)

Oxygen and nutrients

49.

In which parts of plants the starch is stored?

a)

Roots, seed and leaf

b)

Roots, leaf, stem

c)

Roots, leaf, stem, fruit

d)

Fruit, roots, leaf, seed, stem

50.

What is going to be observed after one week?

a)

Plant A dies, plant B alive

b)

Plant A alive, plant B dies

c)

Plant A is more alive than plant B

51.

The diagram shows a plant which is placed in a box. The plant is watered every day but died after one week. Why?

a)

The plants did not get enough air

b)

The plant did not get enough water

c)

The plant did not get enough sunlight

52.

Photosynthesis is very important to other living things. Why?

a)

It provides energy and air

b)

It provides food and Oxygen

c)

Photosynthesis causes the inbalance of air composition

53.

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

a)

Ribosomes

b)

Nucleus

c)

Chloroplast

d)

Mitochondria

54.

Select all that are raw materials for Photosynthesis.

a)

Water

b)

Carbon Dioxide

c)

Oxygen

d)

Sunlight (Light Energy)

e)

Glucose (Sugar/food)

55.
____________________ provides the energy necessary for photosynthesis.
a)
water
b)
sunlight
c)
glucose
d)
soil
56.
__________ energy from the sun is changed intto __________ energy during photosynthesis
a)
Chemical energy to light energy
b)
Light energy to chemical energy
c)
Thermal energy to light energy
d)
Electrical energy to chemical enerfy
57.
Glucose is a ...
a)
sugar
b)
carbohydrate
c)
source of quick energy
d)
all are correct
58.
Why do plants conduct photosynthesis?
a)
To make light
b)
To make mitochondria
c)
To make glucose
d)
To release carbon dioxide
59.
Which organelle in the plant cell performs photosynthesis?
a)
Chloroplast
b)
Mitochondria
c)
Nucleus
d)
Cytoplasm
60.

What pigment captures/absorbs sunlight?

a)

stomata

b)

chlorophyll

c)

chloroplast

d)

phloem

61.

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

a)

stomata

b)

xylem

c)

phloem

d)

chloroplast

62.

How does glucose travel in a producer (plant)? Name the structure.

a)

xylem

b)

phloem

c)

stomata

d)

chlorophyll

63.

What do we use to test for starch?

a)

Fluorine solution

b)

Chlorine solution

c)

Iodine solution

64.

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

a)

Blue/Black

b)

Orange

c)

Red

65.

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

66.

What is chlorophyll soluble in?

a)

Ethanol

b)

Water

c)

Don't Know

67.

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

68.

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

69.

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

70.

What are the reactants in photosynthesis?

a)

oxygen & water

b)

Oxygen & carbon dioxide

c)

carbon dioxide & water

d)

water & glucose

71.
oxygen is a gas produced by _ and used by  _ 
a)
plants and animals 
b)
photosynthesis and carbon dioxide 
c)
animals and plants 
d)
carbon dioxide and photosynthesis
72.
if there is a fire in a forest, there will be less _ in the environment?
a)
nitrogen
b)
oxygen
73.
All of the carbon in existence is continually recycled in the carbon cycle
a)
True
b)
False
74.

Subduction and Volcanic eruptions are part of which carbon cycle?

a)

Geological

b)

Biological

75.

Decomposition and Photosynthesis and part of which carbon cycle?

a)

Geological

b)

Biological

76.

Carbon enters the soil through dead plant or animal matter.

a)

Decomposition

b)

Respiration

c)

Photosynthesis

d)

Diffusion

77.

Organic matter, burred over millions of years

a)

Fossil Fuels

b)

Decomposition

c)

Combustion

d)

Subduction

78.
What does NOT produce carbon dioxide?
a)
Photosynthesis
b)
Burning Fossil Fuels
c)
Animal respiration
d)
Plants decaying
79.
Combustion is another word for __________.
a)
Transportation
b)
Respiration
c)
Fossil Fuels
d)
Burning
80.
TRUE or FALSE?
All of the carbon in existence is continually recycled in the carbon cycle.
a)
True
b)
False
81.
Organisms that do not decompose can be buried and become what?
a)
water
b)
nutrients
c)
air
d)
fossil fuels
82.
Carbon can be found in...
a)
The atmosphere
b)
Soil
c)
Fossil fuels
d)
All of the above
83.
Which of the following removes carbon from the atmosphere?
a)
Combustion
b)
Respiration
c)
Photosynthesis
d)
Death
84.
What process occurs when coal (fossil fuel) is used for energy?
a)
Decomposition
b)
Combustion
c)
Pressurization 
d)
Respiration 
85.
Respiration is the process by which animals take in _____ and release _____. 
a)
photosynthesis, air
b)
carbon, oxygen
c)
oxygen
d)
oxygen, carbon dioxide
86.
When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.
a)
Water
b)
Atmosphere
c)
Sun
d)
Air
87.
In the carbon cycle, producers take in the gas __
a)
carbon dioxide
b)
oxygen
c)
nitrogen
d)
carbon monoxide
88.
How does the carbon in grass become part of a lion?
a)
The lion eats the grass
b)
Carbon from grass doesn't end up in a lion. 
c)
The carbon ends up in the lion's food chain. 
d)
The lion breathes in carbon given out by the plant
89.
If the plant population decreased, the amount of carbon would _________.
a)
Stay the same
b)
Increase
c)
Decrease
90.

Which gas do plants release, that humans depend on for survival?

a)

Water

b)

Carbon Dioxide

c)

Oxygen

d)

Sugar

91.
All of the carbon in existence is continually recycled in the carbon cycle
a)
True
b)
False
92.
Which of the following removes carbon from the atmosphere?
a)
Combustion
b)
Respiration
c)
Photosynthesis
d)
Death
93.
Which process converts carbon in the form of sugar into carbon dioxide gas?
a)
Bioremediation
b)
Photosynthesis
c)
Respiration
d)
Transpiration
94.
Combustion is another word for __________.
a)
Transportation
b)
Respiration
c)
Fossil Fuels
d)
Burning
95.
Organisms that do not decompose can be buried and become what?
a)
water
b)
nutrients
c)
air
d)
fossil fuels
96.
Carbon can be found in...
a)
The atmosphere
b)
Soil
c)
Fossil fuels
d)
All of the above
97.
What process occurs when coal (fossil fuel) is used for energy?
a)
Decomposition
b)
Combustion
c)
Pressurization 
d)
Respiration 
98.
When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.
a)
Water
b)
Atmosphere
c)
Sun
d)
Air
99.
How do living organisms return carbon to the atmosphere in the carbon cycle?
a)
respiration and photosynthesis
b)
 decomposition and respiration
100.

The circulation of the element Carbon among Earth's atmosphere, land, oceans, and organisms is called _____________.

a)

the Carbon Cycle

b)

the Oxygen Cycle

c)

the Carbon dioxide Cycle

d)

the Water Cycle

101.

When animals eat plants, the carbon that the plant contains is absorbed by the animals.

a)

True

b)

False

102.

How do animals get carbon?

a)

By eating plants and or other animals.

b)

They absorb it from the atmosphere.

c)

From the ground

d)

They do not get carbon from anywhere.

103.

What are fossil fuels made from?

a)

Plants and animals that are buried underground for millions of years.

b)

They absorb it from the atmosphere.

c)

Water

d)

Wind

104.

When humans EXHALE, we release __________________.

a)

Oxygen

b)

Carbon Dioxide

c)

Nitrogen

d)

Water

105.

What is CO2?

a)

Carbon Monoxide

b)

Carbon Trioxide

c)

Carbon Dioxide

d)

Oxygen

106.

Which of the following are fossil fuels?

a)

Coal, water, oil

b)

Oxygen, coal, oil

c)

Coal, Oil, Natural Gas

d)

None of the above

107.

How is the carbon cycle similar to the water cycle?

a)

Both involve liquid substances falling to the Earth from the atmosphere?

b)

Neither process works at low temperature.

c)

Both involve the transfer of substances between animals, plants, and the Earth.

d)

Both involve the transfer of substances between the earth and outer space.

108.

What microscopic (tiny) organism absorbs the CO2 at the surface of water?

a)

Algae

b)

Plants

c)

Phytoplankton

d)

Plankton

109.

True or false. Carbon dioxide is a greenhouse gas.

a)

True

b)

False

110.

Is carbon dissolved at the surface of the ocean or in the deep ocean?

a)

Surface

b)

Deep

111.
What are the products of photosynthesis?
a)
water and carbon dioxide
b)
oxygen and glucose
c)
oxygen and carbon dioxide
d)
oxygen and water
112.
What molecule absorbs sunlight for photosynthesis?
a)
chloroplast
b)
thylakoid
c)
grana
d)
chlorophyll
113.
Most plants appear green because chlorophyll
a)
absorbs green light.
b)
absorbs violet light.
c)
does not absorb green light.
d)
does not absorb violet light.
114.
What is the name of the simple sugar that is produced in photosynthesis?
a)
Sucrose
b)
Dextrose
c)
Glucose
d)
Lactose
115.
Chlorophyll is green because
a)
it absorbs green wavelengths of light
b)
it absorbs blue and yellow wavelengths of light
c)
it reflects green wavelengths of light
d)
it is an optical illusion caused by the transmission of light
116.
What three things do plants need?
a)
Water, air, and sunlight.
b)
Water, soil, and sunlight.
c)
Water, soil, and air.
d)
Love, family, and Cheetos.
117.
What does a plant release into the air?
a)
Plants release carbon dioxide into the air.
b)
Plants release sugar into the air.
c)
Plants release oxygen into the air.
d)
Plants release bacon into the air.
118.
What is the main product of photosynthesis?
a)
food
b)
78
c)
leaves
d)
chlorophyll
119.
Where does a plant get carbon dioxide from?
a)
A plant gets carbon dioxide from the soil.
b)
A plant gets carbon dioxide from the air.
c)
A plant gets carbon dioxide from the water.
d)
A plant gets carbon dioxide at the Shell gas station.
120.
Leaves use the energy from the sun to change carbon dioxide and water into what?
a)
chlorophyll
b)
oxygen
c)
carbon dioxide
d)
sugar
121.
What is photosynthesis?
a)
The process plants use to turn carbon dioxide and water into food.
b)
The process plants use to chlorophyll and sunlight into air. 
c)
The process plants use to turn sunlight and chlorophyll into soil.
d)
The process plants use to turn chocolate and milk into chocolate milk.
122.
Where does photosynthesis take place?
a)
The leaves.
b)
The roots.
c)
The branches.
d)
The kitchen.
123.
What two materials are needed for photosynthesis?
a)
Water and soil.
b)
Carbon dioxide and water.
c)
Carbon dioxide and chlorophyll.
d)
Peanut butter and jelly.
124.

Photosynthesis occurs in:

a)

Mitochondria

b)

Chloroplasts

c)

Humans

d)

Animals

125.

What are the reactants in Photosynthesis?

a)

Sun, CO2, glucose

b)

glucose and oxygen

c)

sun, carbon dioxide, water

d)

water, glucose

126.

The process in which plant cells make energy

a)

Exothermic

b)

Endothermic

c)

Cellular Respiration

d)

Photosynthesis

127.

In cellular respiration, carbon starts out in the glucose molecule, but ends up in a(n)

a)

oxygen molecule

b)

water molecule

c)

CO2 molecule

d)

C6H12O2 molecule

128.

In photosynthesis, what kind of molecule does hydrogen start in?

a)

water

b)

oxygen

c)

glucose

d)

carbon dioxide

129.

In what process does ATP get created?

a)

photosynthesis

b)

cellular respiration

c)

radiation

d)

chemical

130.

How do humans get glucose so they can live?

a)

breathe it in

b)

photosynthesis

c)

eat food

d)

drink liquids

131.

Mitochondria and Chloroplasts are:

a)

organelles

b)

cells

c)

only in humans

d)

only in plants

132.

Cellular respiration happens

a)

only in plants

b)

only in animals

c)

only in humans and animals

d)

in plants and animals

133.

The products of cellular respiration are

a)

air and water

b)

carbon dioxide, water, and ATP

c)

glucose and carbon dioxide

d)

ATP, glucose, and oxygen

134.

For photosynthesis, a plant needs water, sun, and...

a)

oxygen

b)

carbon dioxide

c)

glucose

d)

mitochondria

135.

For humans to live, we need energy. What is the name of the energy that the body makes in cellular respiration?

a)

sugar

b)

glucose

c)

ATP

d)

fructose

136.

What is a product of photosynthesis AND a reactant for cellular respiration?

a)

oxygen

b)

water

c)

carbon dioxide

d)

Doctor Pepper

137.

The sun gives us what type of energy?

a)

chemical

b)

radiation

c)

potential

d)

kinetic

138.

Cellular respiration happens in the

a)

plants only

b)

animals only

c)

chloroplasts

d)

mitochondria

139.

What is the process (equation) for photosynthesis?

a)

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

b)

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

c)

6CO2 + C6H12O6 --> 6H2O + Energy

d)

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

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APES Unit 1 (Full)

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Worksheet

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139 questions

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135 questions

Europe Review

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