40 snails were marked and released. Later 30 were caught, of which 6 were marked. The estimated population is

  1. 1200
  2. 120
  3. 200
  4. 76
Answer

C) 200

40 × 30 ÷ 6 = 200. AS & A Level Biology · Topic 18 Classification, Biodiversity and Conservation · 18.2 Biodiversity

Biology MCQ · More A Level Biology: Classification, biodiversity and conservation MCQs · Practise