7 D

Quick Quiz

On your answer sheet, write in or circle the correct letter for each question.

7Da
1 What is the area where a polar bear lives 2 Organisms living in hot, dry areas are more
called? likely to survive if they:
A the igloo A wash regularly
B the desert environment B do not waste water
C the Arctic habitat C have thick hair
D the winter habitat D do not have sharp claws.
2 The drawing shows two tigers. 3 Which of these features can not be
inherited?
A eye colour B hair colour
C a scar D curly hair
4 An ecosystem is:
If you saw these two tigers in the wild, one
difference would be: A plumbing and wiring in a house that
uses less water and energy than older
A they have different patterns of stripes systems
B one is bigger than the other B all the different physical environmental
C one has a tail and the other does not factors that affect a habitat
D they have different numbers of legs. C all the different types of organisms in
a habitat
3 The variation in the lengths of some fish is:
D all the organisms in a habitat together
A discontinuous with the physical environmental factors.
B continuous
7Dc
C both discontinuous and discontinuous
1 How does the amount of light that reaches
D neither discontinuous nor continuous. the ground at midday in a deciduous forest
4 A species is: change during a year?

A a nasty disease A It doesn’t change.

B a set of organisms that can reproduce B The most amount of light is in summer.
giving more organisms of the same C The most amount of light is in winter.
type
D The most amount of light is when there
C a way of telling how old an animal is is a full Moon.
D someone who wears glasses. 2 Which of these is most likely to be an
example of environmental variation?
7Db A a woman with naturally blonde hair
1 Examples of physical environmental B a man with an earring
factors that make up an environment
include: C a girl with blue eyes

A temperature, light, moisture D a boy with naturally curly hair

B producers, consumers 3 What does a rabbit do when winter comes?

C herbivores, carnivores, omnivores A it hibernates B it grows thicker fur

D Arctic, woodland, pond. C it migrates D it dies

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 7 D
Quick Quiz

4 At a certain lake, the community is smaller 4 Look at the food web in question 2. What
in winter because: might happen if all the rabbits died?
A some of each species of animal have A There would be more hawks because
died there are less rabbits in competition
with them.
B some species of birds have migrated
B There would be fewer lizards because
C more animals have arrived for the
the hawks would eat more of them.
winter so that they can keep warm
together C There would be less grass because it
would be eaten by the grasshoppers.
D there is more ice on the lake and so
less room for the organisms. D There would be more snakes because
they would not be in competition with
7Dd the rabbits.
1 A herbivore:
7De
A only eats animals
1 What is a pesticide?
B eats plants and animals
A a type of fertiliser used by farmers
C never eats
B a type of food for small animals
D only eats plants.
C an animal that eats crops
2 Look at this food web.
D a chemical that kills organisms that ruin
things that humans want
2 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.
3 A persistent pesticide is one that:
A kills persist beetles
What do lizards eat?
B only lasts a very short time in nature
A mice
C lasts a very long time in nature
B grasshoppers
D is not harmful to wildlife.
C hawks
4 Which of the following food chains does
D grass the pyramid of numbers represent?
3 What resources do plants need?
A oxygen, food
B fertiliser, a garden, water
C light, space, water, mineral salts
D weedkiller A grass  rabbit  fox
B grass  sheep  fox
C lettuce  slug  thrush  hawk
D oak tree  caterpillar  bird

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