CAIE A Level Biology 9700 · Classification, biodiversity and conservation

Classification, biodiversity and conservation: describe question

Describe5 marksChallenge

A biologist discovers five new organisms. Their key features are shown in the table.

OrganismCell typeCell wallMode of nutritionOther features
PProkaryoticPresent (peptidoglycan)Autotrophic (photosynthetic)Unicellular
QEukaryoticAbsentHeterotrophicMulticellular with a simple nervous system
REukaryoticPresent (chitin)Heterotrophic (saprophytic)Multicellular, reproduces by spores
SEukaryoticPresent (cellulose)Autotrophic (photosynthetic)Multicellular, contains chloroplasts
TAcellularNoneNoneContains a double-stranded DNA genome

Describe how the features in the table can be used to assign each organism to the appropriate taxonomic group. Your answer should refer to domains, kingdoms, and virus classification as appropriate.

0 words · 5 marks

No account needed for your first marks. Your answer is used only to mark it.

How this question is marked

5 marks, so the mark scheme is looking for about 5 separate creditworthy points. Making the same point twice in different words earns it once.

Describe means: Say what happens or what something is like, in order and with detail. You are not being asked why. If there is data, quote it: name the trend, then give figures with units at the points where it changes.

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