IB Diploma Biology HL, topic B4
Ecosystems (Form and function)
This group looks at how the form of organisms fits the place where they live and the role they play there. It covers habitats, adaptations and ranges of tolerance, coral reefs and terrestrial biomes, then ecological niches, modes of nutrition, feeding adaptations, and how competition shapes fundamental and realized niches.
Revision notes
Worksheet
FlashcardsSubtopics
Work through them in order. Each one has notes, exam questions and flashcards, and a PDF of each.
- 1Adaptation to environment Spec B4.1Habitats, adaptations to abiotic factors, ranges of tolerance, coral reef conditions and the biomes set by temperature and rainfall. IB Biology B4.1.NotesQuestions 7Flashcards 17
- 2Ecological niches Spec B4.2Niches, oxygen tolerance, modes of nutrition, hominid dentition, herbivory, predation, light harvesting and competitive exclusion. IB Biology B4.2.NotesQuestions 8Flashcards 22
Whole topic
When you have done the subtopics: test yourself on everything, or print the lot.