Biology · Form and function

B4.1 — Adaptation to environment

Biology · SL / HL · syllabus-mapped notes

1. B4.1.1

   Habitat as the place in which a community, species, population or organism lives

   Define habitat, including geographical location, physical conditions and ecosystem type.

2. B4.1.2

   Adaptations of organisms to the abiotic environment of their habitat

   Explain adaptations to the abiotic environment, using a dune grass and a mangrove tree.

3. B4.1.3

   Abiotic variables affecting species distribution

   Give abiotic variables affecting plant and animal distribution, and explain range of tolerance.

4. B4.1.4

   Range of tolerance of a limiting factor

   Use transect data you collect yourself to correlate species distribution with an abiotic variable.

5. B4.1.5

   Conditions required for coral reef formation

   Explain the five conditions required for coral reef formation.

6. B4.1.6

   Abiotic factors as the determinants of terrestrial biome distribution

   Explain how temperature and rainfall determine which biome develops.

7. B4.1.7

   Biomes as groups of ecosystems with similar communities due to similar abiotic conditions and convergent evolution

   Explain biome similarity through convergent evolution, and state the climate of each of the six biomes.

8. B4.1.8

   Adaptations to life in hot deserts and tropical rainforest

   Give named plant and animal adaptations to hot deserts and to tropical rainforest.