DP Biology (first assessment 2025)

Question 22N.2.SL.TZ0.c

Date	November 2022	Marks available	[Maximum mark: 1]	Reference code	22N.2.SL.TZ0.c
Level	SL	Paper	2	Time zone	TZ0
Command term	Calculate	Question number	c	Adapted from	N/A

[Maximum mark: 1]

22N.2.SL.TZ0.c

Calculate the number of Coleoptera species that would be expected to exist after one year from a starting number of 400000 species, assuming the mean rate of decline.

[1]

Markscheme

392000 (species);

Syllabus sections

C. Interaction and interdependence

C. Interaction and interdependence » C4.2. Transfers of energy and matter » C4.2.15. Primary production as accumulation of carbon compounds in biomass by autotrophs

C. Interaction and interdependence » C4.2. Transfers of energy and matter » C4.2.16. Secondary production as accumulation of carbon compounds in biomass by heterotrophs

C. Interaction and interdependence » C4.2. Transfers of energy and matter

Question 22N.2.SL.TZ0.c

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Syllabus sections

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