7d Variation Test Sen 2004

You May write on this sheet!

Name: _____________________

Tutor Group: ___________

For questions 1 to 6 choose the correct word from the brackets to make each sentence correct

1.

We (inherit / change /adapt) our skin colour from our parents.

2.

Everybody's (hair colour/ finger prints/ height) will be different from everybody else's.

3. Humans are part of a larger group called (mammals / insects / apes / invertebrates) 4.

Over millions of years the shape of an animal can change. This is called (revolution / evolution / devolution / extinction ).

5.

The dinosaurs that lived on the Earth sixty million years ago are extinct. They died because of changes in their (evolution / inheritance / environment)

6.

The diagram below shows a key used to identify animals without backbones called (vertebrates / invertebrates).

Pond Animal s With Le gs

Wit hout Legs

More Than 3 Pairs of Legs

3 Pairs of Leg s

3 Forks on tail

No Forks on tail

4 Pairs of Legs

More than 4 Pairs of Legs

Mayfly Nymph

Water Boatman

Water Mite

Water Louse

With Shell

Pond Snail

Without Shell

Suckers on Body

No sucke rs on Body

Leech

Worm

C E B A

D

F

Use the key above to identify the different creatures shown. 7. E is a _________________ 8. B is a _________________ 9.

D is a _________________

Answer true or false to questions 10 to 12. Circle the correct answer 10. Reptiles have a slimy skin. (TRUE/FALSE) 11.

12.

Cutting the hair on a dog regularly and breeding from this dog will produce dogs with shorter hair. (TRUE/FALSE) Identical twins will always be identical, regardless of how much they eat. (TRUE/FALSE)

For questions 13 to 16, use the words in the box to name the sets of animals described in the table. 13 14 15 16

What they look like Animals with scales and fins

Name of set Fish Reptiles Mammals Birds Amphibians

Warm blooded animals with hair Animals with soft skin, with no hairs or scales Animals with scales but no fins

For questions 17-20, complete the table to match up the descriptions with the Life Processes using words in the box. 17 18 19 20

Description The removal of waste products from the body The production of a new generation of individuals All living things need to take in or produce food Responding to changes in the environment

Life Process

Respiration Movement Nutrition Sensitivity Excretion Reproduction

Give two reasons why a cod is classified as a fish. 21. _________________________________________________________ 22. _________________________________________________________ Give two reasons why a bat is not classified as a bird although it can fly.

23. _________________________________________________________ 24. _________________________________________________________ For questions 25 to 27, choose an answer from the box below. You may use an answer more than once. hair length

hair colour

birth marks

Height

freckles

25.

Give one example of continuous variation in humans. __________

26

Give one example of discontinuous variation in humans. ________

27

Give one example of a characteristic that is not inherited from your parents. ________________________

A pair of identical twins was split up at birth and grew up in different countries. They are now 21 years old. 28.

Give one characteristic of the twins that would be exactly the same. __________________________________________________

29.

Give one characteristic that might be completely different between them. _________________________________________

30.It was found that when they reached the age of 21 they were slightly different in height. Suggest a reason for this. __________________________________________________________ __________________________________________________________. Well done! Now go back and check your work to make sure you haven’t made any silly mistakes.