The unit in one line
Three animals studied in depth: the malarial parasite, the earthworm and the frog. 6 of Zoology's 40 questions — two a chapter on average, more per chapter than any unit except Human Biology.
Read in this order
- Plasmodium (12 min) — the stages in each host, the fever clock and the four malaria types.
- Earthworm (Pheretima) (12 min) — every pore, organ and heart by segment number.
- Frog (Rana) (13 min) — three routes of breathing, a three-chambered heart, ten cranial nerves and metamorphosis.
About 37 minutes in all.
How it is asked
This unit is number-heavy: segment numbers, fever periodicity, heart pairs, nerve counts. Each note ends with a numbers table — learn that table and most recall items are covered. Understanding items ask why malaria fever recurs on a cycle or why the frog needs moist skin. Application items describe a patient's fever pattern or a dissection and ask what it shows.
Then practise
Each animal has a chapter test under Practice › Topics.