Topic 19Biology

B4.2 Ecological niches

The ecological niche concept, modes of nutrition (autotroph, heterotroph, mixotroph) and the link between adaptation and niche.

The niche conceptSign up

Niche + fundamental vs realised · Competitive exclusion

Modes of nutritionSign up

Autotroph vs heterotroph and O₂ tolerance · Mixotrophs, saprotrophs, and archaea

Niche and adaptationSign up

Dentition and the herbivore-plant arms race · Predator-prey arms race and forest light niches