WASSCE Biology · Paper 1 style

Breathing

One sample question with the full working. 1 more in the app, with instant feedback and repair sessions for the traps below.

In humans, gaseous exchange takes place in the

Aalveoli
Btrachea
Cstomach
Ddiaphragm

Show the answer and working

Answer: A

Gas exchange: alveoli.

Trap B Gives the job of a neighbouring structure or stage: Learn structures as pairs of 'name → one job' and contrast neighbours: ribosome makes protein, mitochondrion releases energy; cochlea hears, semicircular canals balance. When two options sit in the same organ or process, ask which one does exactly the job in the stem.

Trap C Transfers a feature to the wrong organism group: Keep a feature grid: rows = groups (bacteria, fungi, mosses, ferns, conifers, flowering plants, insects, fish, mammals), columns = wall, nucleus, gas exchange, reproduction. Check the option against the right row.

Trap D Takes one contributing factor as the whole answer: Watch for 'only', 'just', 'mainly'. Ask: is this the MAIN reason, or one contributor? If it would need other things to work (plasma proteins need platelets), it is incomplete.

Traps in Breathing

Gives the job of a neighbouring structure or stage
Learn structures as pairs of 'name → one job' and contrast neighbours: ribosome makes protein, mitochondrion releases energy; cochlea hears, semicircular canals balance. When two options sit in the same organ or process, ask which one does exactly the job in the stem.
Transfers a feature to the wrong organism group
Keep a feature grid: rows = groups (bacteria, fungi, mosses, ferns, conifers, flowering plants, insects, fish, mammals), columns = wall, nucleus, gas exchange, reproduction. Check the option against the right row.
Takes one contributing factor as the whole answer
Watch for 'only', 'just', 'mainly'. Ask: is this the MAIN reason, or one contributor? If it would need other things to work (plasma proteins need platelets), it is incomplete.

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