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A1.1 Water

A1.2 Nucleic acids

A2.1 Origins of cells (HL)

A2.2 Cell structure

A2.3 Viruses (HL)

A3.1 Diversity of organisms

A3.2 Classification and cladistics (HL)

A4.1 Evolution and speciation

A4.2 Conservation of biodiversity

B1.1 Carbohydrates and lipids

B1.2 Proteins

B2.1 Membranes and membrane transport

B2.2 Organelles and compartmentalization

B2.3 Cell specialization

B3.1 Gas exchange

B3.2 Transport

B3.3 Muscle and motility (HL)

B4.1 Adaptation to environment

B4.2 Ecological niches

C1.1 Enzymes and metabolism

C1.2 Cell respiration

C1.3 Photosynthesis

C2.1 Chemical signalling (HL)

C2.2 Neural signalling

C3.1 Integration of body systems

C3.2 Defense against disease

C4.1 Populations and communities

C4.2 Transfer of energy and matter

D1.1 DNA replication

D1.2 Protein synthesis

D1.3 Mutations and gene editing

D2.1 Cell and nuclear division

D2.2 Gene expression (HL)

D2.3 Water potential

D3.1 Reproduction

D3.2 Inheritance

D3.3 Homeostasis

D4.1 Natural selection

D4.2 Sustainability and change

D4.3 Climate change

IB Biology Topic B4.2 Ecological Niches Notes &… | RevisionDojo

IB
B4.2 Ecological niches

IB Biology Topic B4.2: Ecological Niches

IB Biology Topic B4.2 Ecological Niches (SL/HL) covers syllabus content as part of Topic B4: Ecosystems under Theme B: Form and Function. Use these Notes, Questionbank, Videos, Flashcards, and Lessons to review the topic, practise exam questions, and move between notes, videos, flashcards, and lessons where available.

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37 chapters

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14 lessons

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22 definitions

B4.2.1 Ecological niche as the role of a species in an ecosystem

B4.2.2 Organisms that are obligate anaerobes, facultative anaerobes and obligate aerobes

B4.2.3 Photosynthesis as the mode of nutrition

B4.2.4 Holozoic nutrition in animals

B4.2.5 Mixotrophic nutrition in some protists

B4.2.6 Saprotrophic nutrition in some fungi and bacteria

B4.2.7 Diversity of nutrition in archaea

B4.2.8 Dentition and the diet of omnivorous and herbivorous members of the family Hominidae

B4.2.9 Adaptations of herbivores for feeding on plants and of plants for resisting herbivory

B4.2.10 Adaptations of predators

B4.2.11 Adaptations of plant form for harvesting light

B4.2.12 Fundamental and realized niches

B4.2.13 Competitive exclusion and the uniqueness of ecological niches

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What this topic covers

B4.2 Ecological niches

Topic B4: Ecosystems

Theme B: Form and Function