ConceptConceptDocsDocuments

IB Biology HL 3.4.6 Biome Climate Data Question Bank

Practise IB Biology HL 3.4.6 by interpreting climographs and explaining how climate differences shape biome leaf area and distribution.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Identify a biome from a climograph and explain climate differences between zones.
  • Relate temperature, seasonality and light to leaf-area index across biomes.

B4.1.6—Terrestrial biome distribution question 1

[Maximum number: 3]

Remote sensing satellites are used to monitor the Earth's ecosystems. One measure of ecosystem status is leaf area index (LAI), which is the total area of leaves in square metres per square metre ( m2 m−2\mathrm{m}^{2} \mathrm{~m}^{-2} ) of the Earth's surface. The graph shows LAI estimates, calculated using data from the Global Inventory Monitoring and Modelling System (GIMMS), during the period from 1981 to 2011. The data points are monthly averages in four latitudinal zones in the northern hemisphere.

Figure for Question B4.1.6—Terrestrial biome distribution question 1 — IB Biology HL

Suggest reasons for the differences in LAI between the boreal and equatorial zones.

Figure for Question B4.1.6—Terrestrial biome distribution question 1 — IB Biology HL
All question bank results loaded