Primary General Studies: Classifying Living Things And Biodiversity (Paper 4 (error Clinic))

Primary General Studies: Classifying Living Things and Biodiversity (Paper 4 (error clinic))

2026-11-14

Tutor Prep Guide · Renewable energy sources, how they generate power and capacity sums

Primary General Studies: Classifying Living Things and Biodiversity (Paper 4 (error clinic))

Paper four drills the five kinds of item that lose the most marks: the six-leg test, classifying bats and whales, binomial naming and percentage calculations.

Direct answers　State the classifying feature first, then do the arithmetic; answers must carry the group name, the number and the unit.

01　Paper details (check answers afterwards)

Item	Detail
Questions	10
Suggested time	20
Difficulty mix	Foundation 3 · Intermediate 3 · Challenge 3 · Error redo 1
Chapter	Chapter: Primary General Studies: Classifying Living Things and Biodiversity
Level	parts of a closed circuit, conductors against insulators, series against parallel, adding up battery voltage, and electrical safety

02　Questions (10 items)

FoundationInto which parts is an insect body divided?
FoundationIs a bat a bird?
FoundationA whale lives in the sea. Is it a fish?
IntermediateWhat two features must be checked to decide whether a small animal is an insect?
IntermediateA snail has a shell and crawls slowly. Is it an insect?
IntermediateHow many legs do 24 insects have altogether?
ChallengeOf the 5 vertebrate groups, 3 lay eggs. How many groups give birth to live young?
ChallengeA school records 80 insects and 30 per cent are moths. How many moths?
ChallengeOf 36 insects, 9 are beetles. What percentage are beetles?
Error redoA classmate says every animal that flies is a bird. Give two counter-examples.

03　Answers and one-line notes

#	Answer	One-line note
1	Head, thorax and abdomen: three parts.	A three-part body plus six legs is the fixed insect pattern; miss one and it is not an insect.
2	No. A bat has fur, gives birth and feeds its young milk, so it is a mammal.	Flying does not define a bird; feathers and a beak do.
3	No. A whale breathes with lungs, gives birth and feeds milk, so it is a mammal.	Habitat is not the basis for classification; breathing and reproduction are.
4	Two: six legs, and a body in three parts (head, thorax, abdomen).	Both must match; a spider is excluded because it has eight legs.
5	No. A snail has a soft body, no legs and no segmented insect body, so it is a mollusc.	A shell and crawling are not insect features; legs and body structure are.
6	144 legs.	24 × 6 = 144, since every insect has six legs.
7	2 groups.	Fish, amphibians, reptiles and birds lay eggs; mammals give birth, so 5 minus 3 leaves 2.
8	24 moths.	80 × 0.3 = 24, leaving 56 other insects.
9	25 per cent.	9 ÷ 36 × 100 = 25, that is one quarter.
10	A bat is a mammal and a dragonfly is an insect; both fly but neither is a bird. Feathers and a beak define a bird.	Classify by features, not by a behaviour such as flying.

04　What to do after marking

After marking, redo only the wrong items and write down which step went wrong (formula, unit, or misread number).
Repeat the same item two days later; move to the next paper only when both attempts are correct.
Parents only need the answer and note columns; there is no need to explain every item.

With all four done, go back to the chapter page and revise the three parts of a closed circuit plus three safety habits.Tutor Registration →

Questions and answers are written originally by the TutorZone team and are not taken from any school, publisher or examination authority paper. Every value is checked by computer.