7D - Ecosystems

What is the area where a polar bear lives called?

• the igloo
• the desert environment
• the Arctic habitat
• the winter habitat

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

• they have different patterns of stripes

• one is bigger than the other

• one has a tail and the other does not

• they have different numbers of legs.

The variation in the lengths of some fish is:

• discontinuous
• continuous
• both discontinuous and discontinuous
• neither discontinuous nor continuous.

A species is:

• a nasty disease
• a set of organisms that can reproduce giving more organisms of the same type
• a way of telling how old an animal is
• someone who wears glasses.

Examples of physical environmental factors that make up an environment include:

• temperature, light, moisture
• producers, consumers
• herbivores, carnivores, omnivores
• Arctic, woodland, pond.

Organisms living in hot, dry areas are more likely to survive if they:

• wash regularly
• do not waste water
• have thick hair
• do not have sharp claws.

Which of these features can not be inherited?

• eye colour
• hair colour
• a scar
• curly hair

An ecosystem is:

• plumbing and wiring in a house that uses less water and energy than older systems
• all the different physical environmental factors that affect a habitat
• all the different types of organisms in a habitat
• all the organisms in a habitat together with the physical environmental factors.

How does the amount of light that reaches the ground at midday in a deciduous forest change during a year?

• It doesn’t change.
• The most amount of light is in summer.
• The most amount of light is in winter.
• The most amount of light is when there is a full Moon.

Which of these is most likely to be an example of environmental variation?

• a woman with naturally blonde hair
• a man with an earring
• a girl with blue eyes
• a boy with naturally curly hair