CourseCourseConceptConceptDocumentDocument

IB Biology HL C4.1.2 Population Size Estimation Questions

Compare quadrats, transects, capture-mark-release-recapture, sonar and catch records while judging sampling bias and population-estimate assumptions in IB Biology HL C4.1.2.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Choose quadrats or transects to estimate population size, distinguish estimating abundance in quadrats from sampling along a habitat gradient, and match the method to the habitat.
  • Compare population-estimation methods for sessile and mobile organisms, including quadrats or transects, capture-mark-release-recapture, sonar and catch records; explain relevant limitations.
  • Evaluate estimates by considering incomplete sampling, uneven distribution, migration, age structure and which individuals or life stages a sampling method misses.

IB Biology HL C4.1.2 Population Size Estimation Questions question 1

[Maximum number: 2]

The Atlantic cod is considered in many countries to be endangered due to overfishing. Describe two methods that could be used to estimate the cod population.

All question bank results loaded