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Year 7 Revision - Plants and Ecosystems

Total questions: 35

Worksheet time: 2hrs 33mins

Name
Class
Date
1.

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 which is captured by the leaves.

d)

Plants do not require energy to perform photosynthesis.

2.

2. What plant tissue transports food (glucose) throughout the plant?

a)

roots

b)

leaves

c)

phloem

d)

xylem

3.

What is the main function of the chloroplast within a plant cell?

a)

make glucose

b)

breakdown food

c)

control the cell

d)

protect the cell

4.
A job of the phloem is to _______.
a)
Transport food
b)
Absorb water and minerals
c)
Make food
d)
Transport water
5.
A job of the xylem is to _______.
a)
Transport food
b)
Absorb water and minerals
c)
Make food
d)
Transport water
6.

How do plants breathe?

a)

Through the stem

b)

Through the stomata

c)

Through the chloroplast

7.
In which part of the cell does photosynthesis take place?
a)
vacuole
b)
mitochondria
c)
cell wall
d)
chloroplast
8.

What gas is needed in order to perform respiration at the cellular level?

a)

oxygen

b)

carbon dioxide

c)

hydrogen

d)

nitrogen

9.

Cellular respiration takes place in the cells of all organisms.

a)

false

b)

true

10.

Name this process

a)

respiration

b)

photosynthesis

c)

gaseous exchange

11.

Product of photosynthesis are

a)

carbon dioxide and glucose

b)

oxygen and glucose

c)

water and glucose

12.

Ultimate source of energy for all living organisms is

a)

Plants

b)

Atmosphere

c)

Earth

d)

Sun

13.

The function of the roots is:

a)

Anchor the plant and absorb sucrose and minerals from the soil

b)

Absorb water only from the soil

c)

Absorb minerals and water from the soil and anchor the plant

d)

Absorb nutrients and water from the soil

14.
Which part of the plant is where pollination occurs? 
a)
Leaves 
b)
Roots
c)
Stems
d)
Flowers
15.
Which part of the plant supports the leaves, flowers and fruit? 
a)
Leaves
b)
Roots
c)
Stem
d)
Flowers
16.
What is a producer?
a)
Organism that makes its own energy
b)
Organism that breaks down dead organisms
c)
Organism that eats other organisms for food & energy
17.
What is a decomposer?
a)
Organism that makes its own energy
b)
Organism that breaks down dead organisms
c)
Organism that eats other organisms for food & energy
18.
What is a consumer?
a)
Organism that makes its own energy
b)
Organism that breaks down dead organisms
c)
Organism that eats other organisms for food & energy
19.
Which one are you?
a)
Producer
b)
Consumer
c)
Decomposer
20.
What is an herbivore?
a)
An organism that only eats plants for energy
b)
An organism that eats animals for energy
c)
An organism that eats both plants and animals for energy.
21.
What is a carnivore?
a)
An organism that only eats plants for energy
b)
An organism that eats animals for energy
c)
An organism that eats both plants and animals for energy.
22.
What is an omnivore?
a)
An organism that only eats plants for energy
b)
An organism that eats animals for energy
c)
An organism that eats both plants and animals for energy.
23.

Which of the following organisms is a primary consumer?

a)

grass

b)

rabbit

c)

fox

d)

snake

24.

Which of the following organisms in competition with the weasel for their food source?

a)

grass

b)

rabbit

c)

fox

d)

snake

25.

What would happen to the rabbit population if the fox population moved out of the area represented by the food web?

a)

The rabbit population would increase

b)

The rabbit population would decrease

c)

The rabbit population would neither increase nor decrease

26.
What does every food chain start with? (Even if it's not drawn or written there!)
a)
producers
b)
sun
c)
consumer
d)
decomposers
27.
Where an organism lives
a)
habitat
b)
niche 
c)
heterotrogh
d)
biosphere
28.
All energy on Earth ultimately comes from what source?
a)
Water
b)
Sun
c)
Consumers
d)
Oxygen
29.
What does a food chain represent?
a)
How all living organisms within a habitat are connected.
b)
All of the things that a particular animal eats.
c)
How plants create their own food.
d)
A single path of energy transfer within a habitat.
30.
What does a food web represent?
a)
All connections of energy flow throughout all organisms in a habitat.
b)
The specific ways that mutualism is carried out.
c)
A single pathway or energy flow between organisms. 
d)
How carnivores get their food. 
31.
The shrew provides energy for the _______?
a)
cricket
b)
grasshopper
c)
frog
d)
snake
32.
What do decomposers eat?
a)
only plants
b)
plants and animals
c)
only other animals
d)
dead organisms
33.

How do invasive plants damage the environment?

a)

Compete with native species

b)

Alter diversity

c)

Change plant community

d)

All of the above

34.

Which of these is one major cause of deforestation?

a)

Overbreeding birds in the wild

b)

buying Christmas trees in during the holidays

c)

cutting down one tree in your backyard

d)

More people moving into a city increasing roads and buildings

35.

When human-made chemicals and garbage find their way into nature and harm the air, soil, and water it is called

a)

pollution

b)

habitat destruction

c)

climate change

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