Skip to content
MathsGenie logo
Open app

Course home

  1. A Level
  3. Biology AQA
  5. Question bank

Populations (A-level only)

EasyMediumHard
1234567891011121314151617181920
Question 4

An initial population (the first generation) of a predatory mite species, Phytoseiulus persimilis, used in biological pest control, contains 60 females.

Calculate the number of female mites that would be produced in the fifth generation of this population.

You should assume that:

  1. Each female produces 200 offspring in each generation.
  2. 70% of the offspring produced in each generation are female.
  3. There is no immigration or emigration.
  4. No mites die before reproducing.

Show your working and give your final answer in standard form.

[4]

Populations (A-level only) Questions

  1. A Level
  2. /Biology
  3. /Populations (A-level only)