Primary General Studies: Classifying Plants And Animals And Biodiversity (Paper 4 (error Clinic))

Primary General Studies: Classifying Plants and Animals and Biodiversity (Paper 4 (error clinic))

2026-11-13

Tutor Prep Guide · rotation and revolution, planet order, moon phases and the cause of seasons

Primary General Studies: Classifying Plants and Animals and Biodiversity (Paper 4 (error clinic))

Paper four drills the ten commonest slips: the split into two groups, insect leg counts, fish breathing, percentage points, species gaps, amphibian breathing change, leg counts for several insects, the share without a backbone, the three levels of biodiversity, and fungi not being plants.

Direct answers　After each answer ask whether the question is about a group, a quantity or a definition, then check the units.

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 Plants and Animals 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 how many large groups are living things divided?
FoundationHow many legs do insects have, and how many do spiders have?
FoundationHow do fish breathe?
Intermediate20 animals are recorded and 3 have a backbone. What percentage is that?
IntermediateThere are about 1500000 animal species and 400000 plant species. What is the difference?
IntermediateHow does breathing change from young to adult in amphibians?
ChallengeHow many legs do four insects have altogether?
ChallengeOf 8 animals 3 have a backbone. What percentage have none?
ChallengeWhat are the three levels of biodiversity?
Error redoA classmate says a mushroom is a plant. What is wrong?

03　Answers and one-line notes

#	Answer	One-line note
1	2 groups: plants and animals.	Plants make their own food and animals eat others, which is the basic split.
2	Insects have six and spiders have eight.	The leg count differs, so spiders are not insects.
3	With gills.	Gills take oxygen from water, so fish die quickly out of water.
4	60 per cent.	3 divided by 20 times one hundred gives 60 per cent.
5	1100000 species.	1500000 minus 400000 is 1100000.
6	Gills when young and lungs as adults.	That change defines amphibians, and frogs are the classic example.
7	24 legs.	Each has 6 and four times 6 is 24.
8	62 per cent.	8 minus 3 leaves 5, and 5 divided by 8 times one hundred is 62 per cent.
9	Species, genetic and ecosystem levels.	All three must be considered; saving species without their habitat still leads to extinction.
10	A mushroom is a fungus: it has no chlorophyll and cannot photosynthesise.	Fungi absorb nutrients by breaking down other organisms, so they form their own kingdom.

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 →

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