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7D - Ecosystems

Total questions: 20

Worksheet time: 15mins

Name
Class
Date
1.
What is the area where a polar bear lives called?
a)
the igloo
b)
the desert environment
c)
the Arctic habitat
d)
the winter habitat
2.

The drawing shows two tigers. If you saw these two tigers in the wild, one difference would be:

a)

they have different patterns of stripes

b)

one is bigger than the other

c)

one has a tail and the other does not

d)

they have different numbers of legs.

3.
The variation in the lengths of some fish is:
a)
discontinuous
b)
continuous
c)
both discontinuous and discontinuous
d)
neither discontinuous nor continuous.
4.
A species is:
a)
a nasty disease
b)
a set of organisms that can reproduce giving more organisms of the same type
c)
a way of telling how old an animal is
d)
someone who wears glasses.
5.
Examples of physical environmental factors that make up an environment include:
a)
temperature, light, moisture
b)
producers, consumers
c)
herbivores, carnivores, omnivores
d)
Arctic, woodland, pond.
6.
Organisms living in hot, dry areas are more likely to survive if they:
a)
wash regularly
b)
do not waste water
c)
have thick hair
d)
do not have sharp claws.
7.
Which of these features can not be inherited?
a)
eye colour
b)
hair colour
c)
a scar
d)
curly hair
8.
An ecosystem is:
a)
plumbing and wiring in a house that uses less water and energy than older systems
b)
all the different physical environmental factors that affect a habitat
c)
all the different types of organisms in a habitat
d)
all the organisms in a habitat together with the physical environmental factors.
9.
How does the amount of light that reaches the ground at midday in a deciduous forest change during a year?
a)
It doesn’t change.
b)
The most amount of light is in summer.
c)
The most amount of light is in winter.
d)
The most amount of light is when there is a full Moon.
10.
Which of these is most likely to be an example of environmental variation?
a)
a woman with naturally blonde hair
b)
a man with an earring
c)
a girl with blue eyes
d)
a boy with naturally curly hair
11.
What does a rabbit do when winter comes?
a)
it hibernates
b)
it grows thicker fur
c)
it migrates
d)
it dies
12.
At a certain lake, the community is smaller in winter because:
a)
some of each species of animal have died
b)
some species of birds have migrated
c)
more animals have arrived for the winter so that they can keep warm together
d)
there is more ice on the lake and so less room for the organisms.
13.
A herbivore:
a)
only eats animals
b)
eats plants and animals
c)
never eats
d)
only eats plants.
14.

Look at this food web. What do lizards eat?

a)

mice

b)

grasshoppers

c)

hawks

d)

grass

15.
What resources do plants need?
a)
oxygen, food
b)
fertiliser, a garden, water
c)
light, space, water, mineral salts
d)
weedkiller
16.

Look at the food web. What might happen if all the rabbits died?

a)

There would be more hawks because there are less rabbits in competition with them.

b)

There would be fewer lizards because the hawks would eat more of them.

c)

There would be less grass because it would be eaten by the grasshoppers.

d)

There would be more snakes because they would not be in competition with the rabbits.

17.
What is a pesticide?
a)
a type of fertiliser used by farmers
b)
a type of food for small animals
c)
an animal that eats crops
d)
a chemical that kills organisms that ruin things that humans want
18.
The arrows in a food chain show:
a)
the flow of energy
b)
the loss of energy
c)
how animals use energy to move around in a habitat
d)
how plants make their own energy.
19.
A persistent pesticide is one that:
a)
kills persist beetles
b)
only lasts a very short time in nature
c)
lasts a very long time in nature
d)
is not harmful to wildlife.
20.

Which of the following food chains does the pyramid of numbers represent?

a)

grass ? rabbit ? fox

b)

grass ? sheep ? fox

c)

lettuce ? slug ? thrush ? hawk

d)

oak tree ? caterpillar ? bird

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