7 Classification and Variation_que

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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS | MethodistHigh Schoo

C!"#$idge Chec%&oi't SCIENCE (Bioog)* | +!ge1 o, 11

CHAPTER 7 : CLASSIFICATION AND VARIATION

• Write in dark blue or black

pen.

• You may use a soft pencil for any diagrams, graphs or

rough working.

• Do not use highlighters, glue

or correction uid.• Show all your working in the

booklet.

N!"e

-

Ro

No.

Q.1 The diagrams below show four different groups of animals.

These animals belong to four different groups of animals. Here is a description of each group.

(a) The animals in this group have a hard outer covering and eight jointed legs.Which animal belongs to group A !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

(b) The animals in this group have a tough spin" s#in and most of them are star shaped.

Which animal belongs to group A !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

(c) The animals in this group have a bod" that is divided up into a series of parts or segments.

Which animal belongs to group A !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

(d) The animals in this group have a soft bod" and are usuall" protected b" a shell.

Which animal belongs to group A !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Q.$ Here is a diagram of a fish.

Write down a description of a fish. %se the diagram and an"

#nowledge "ou alread" have of their structure to help "ou.

&ou should give it at least three features that are t"pical of

most fish.

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Q.' irds bats and dragonflies can all fl". ut we put them into different groups because their

other characteristics are different.

(a) Write down one difference between*

irds and bats*

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(b) irds and dragonflies*

Ans. !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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Q.' +and" and Halim sort the animals using the #e" below. Three ,uestions are missing from

their #e".

(a) -ircle 1 $ or ' net to each ,uestion below to show which bo in the #e" the ,uestion goes in.

(b) /t is important for scientists to classif" animals into groups. Tic# 02 bo to show the bestreason for classif"ing animals.

Q.3 The drawings show five different mammals. The" are not drawn to scale.

(a) Which fact is onl" true about mammals but not true about other animals

Tic# the correct bo.





(b) 4oo# at the drawing of the bat. /n what wa" are bats unusual mammals

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(c) 5ive one wa" the seal is suited for moving through water.

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(d) The porcupine has spines. How do the spines help a porcupine to survive

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(e) /n winter the fur of the Arctic hare and the Arctic fo becomes thic#er and turns white.

(i) How does thic# fur help an Arctic hare and an Arctic fo to survive during the winter

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(ii) The Arctic fo hunts and eats Arctic hares. How does white fur help Arctic hares to survive in

the snow

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Q.6 -opper and arsenic are present in the soil near copper mines. When earthworms eat this soil

the" change from brown to bright "ellow. The copper and arsenic are not poisonous toearthworms.

(a) +ar" suggested that blac#birds are more li#el" to catch bright "ellow earthworms than brown

earthworms. 5ive one reason wh" this might be true.

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(b) +ar" wanted to count the bright "ellow earthworms and the brown earthworms in the soil atdifferent distances from the mines. What important information about the soil could she getfrom her results

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(c) The drawings below show an earthworm and three other worms.





The ragworm belongs to the same group as the earthworm. How can "ou tell this from the

drawings

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(d) The roundworm and some flatworms are parasites. What does this mean Tic# the correct bo.

Q.7 The diagram shows four arthropods.

(a) How man" of these arthropods are insects Tic# the correct answer.(i) A 1

(ii) $

(iii) - '(iv) 8 3

(b) An organism has dr" scales covering its bod". To which vertebrate group does it belong(i) A amphibian

(ii) fish(iii) - mammal

(iv) 8 reptile

(c) The diagram shows an animal.%se the #e" to identif" the animal.





Ans. The animal identified is ////////////////////////////////////////////////////////

Q.9 :ig. shows si members of the cat

famil" :elidae.

%se the #e" to identif" the cats A

to : shown in :ig.

Tic# (!) the boes in Table 1.1 to

show how "ou identif" each cat.

Write the name of each cat in thecorrect bo in Table 1.1.

-at A has been completed for "ou

as an eample.





Q.9 :ig. shows three animals A and - which belong to the same group of arthropods

(a)(i) 4ist three visible features other than si;e which are used to classif" them all in the same

group of arthropods.

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(ii) 5ive one visible difference other than si;e between animal

o A and

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o A and -

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(v) ame the group of arthropods to which these three animals belong.

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(b) ame one other group of arthropods and describe how this group differs from the one "ouhave named in (a)(iii).

• group of arthropods ///////////////////////////////////////////////////////

• difference 1 /////////////////////////////////////////////////////////////

• difference $ /////////////////////////////////////////////////////////////

Q.9 <ome students are investigating a river ecos"stem. The" use nets to sweep through the water.The" empt" the contents into a shallow container of water eamine the animals present and

record what the" see. The diagram shows a student=s record.

(a) All four animals can be classified into the same group. ame the group and give a reason for

"our answer.Ans. ///////////////////////////////////////////////////////////////////////////

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(b) The student uses this #e" to identif" the animals A and . :ill in the correct names.

(i) Animal A is !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

(ii) Animal is !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Q.> There are about '6 different species in the dog famil".





(a) The diagrams show three different species within the dog famil". These are a fo a jac#al and

a wolf.

(i) 8escribe one wa" shown in the diagrams in which a wolf differs from both the fo and the jac#al.

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(ii) :oes jac#als and wolves are classified b" scientists as three separate species. 2plain wh".

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(b) +odern domestic dogs are thought to have descended from wolves. Humans ma" have caught

and tamed wolves and #ept them to help with hunting. +odern domestic dogs are thought tohave evolved about 16 ??? "ears ago. The diagrams show four breeds of modern domestic

dogs. Although the" loo# different the" all belong to the same dog species which scientists

call -anis familiaris.

(i) What word is used to describe the differences between animals of the same species

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(ii) Wild dog species such as foes or jac#als are all ver" similar to each other. +odern domestic

dogs have man" differences in si;e shape and colour. 2plain wh".

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Q.@(i) 8escribe the main similarities between insects and arachnids.

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(ii) " means of a table show the differences between insects and arachnids.

Ans.

/<2-T< AA-H/8<





Q.1?(a)What is the main difference between animals and plants -ircle the correct letter.

A Animals ma#e their own foodB plants do not ma#e their own food. Clants ma#e their own foodB animals do not ma#e their own food.

- Clants must eat their food animals must ma#e their food.8 Clants do not need foodB animals do need food.

(b) What is a species -ircle the correct letter.

A A group of living things that have none of their features in common.

A group of living things that have half of their features in common.

- A group of living things that have over half of their features in common.8 A group of living things that have almost all of their features in common.

(c) What is classification %nderline the correct answer.

A putting things into groups

ta#ing things out of groups

- changing things between groups8 adding groups together

(e) Which of these phrases best describes variation -ircle the correct letter.

A when two living things are the same as each other when two living things are different from each other

- when two living things are identical to each other

8 when two humans are different from each other

(b) 8raw lines to match up each animal group with its main features.

(c) &ou can divide living things into lots of groups. The diagram shows how animals are divided

into groups. -omplete it using the words below.

A/+A4




C!"#$idge Chec%&oi't SCIENCE (Bioog)* | +!ge 10 o, 11

Q.11 The pictures show four different birds.

(a) %se the #e" to identif" birds D and &.

D is

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

& is !!!!!!!!!!!!!!!!!!!!!!!!!!!!!

(b) All the pictures in (a) show animals which belong to the same group (birds).Three features of birds are

• the" have feathers

• the" la" eggs

• the" have a bac#bone.

(i) Which feature is uni,ue to birds (that is which feature is not shared with other groups)

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(ii) Which feature do birds have in common with all other vertebrates

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Q.1$(a)-lassif" the following invertebrates under the headings ECroto;oanE EAnnelidE E-rustaceanE

E/nsectE or E+olluscE .earthworm, slug, woodlouse, wasp, butterfly, lugworm, snail, lobster, Amoeba,

cockroach, whelk, shrimp, housefly, malarial parasite, mussel

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C!"#$idge Chec%&oi't SCIENCE (Bioog)* | +!ge 11 o, 11

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(b) Which invertebrate groups possess one three four or all of the features listed below segmented bodies, hard exoskeleton, jointed legs,

compound eyes, three pairs of walking legs

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(c) Which of the features listed below are possessed b" all of the groups E+ossesE E:ernsE andE:lowering plantsE

made up of many cells, have cell walls, contain chlorophyll, have roots,

stems and leaves, produce seeds, get energy from respiration

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(d) Which of the following are (a) fungi (b) flowering plants

ferns, mushrooms, trees, cabbages, moulds, toadstools,

seaweeds, grasses, mosses, cacti

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7 Classification and Variation_que