Ecology
Learn the key concepts of Ecology for A/L Biology, explained simply · Aligned with the NIE syllabus
Where this fits in the syllabus
Grade 2 · Term 5
What you'll learn
Learn the key concepts of Ecology for A/L Biology, explained simply
About A/L Biology: A/L Biology covers the study of life from molecular to ecosystem level.
A. Biodiversity and Its Components
Definition: Biodiversity refers to the variety of life forms at all levels of biological organization, including genetic diversity, species diversity, and ecosystem diversity. Explanation: Biodiversity encompasses three main components: genetic diversity (variation within species), species diversity (variety of species in an area), and ecosystem diversity (variety of habitats and ecological processes). Genetic diversity includes differences in DNA sequences among individuals of the same species, which allows populations to adapt to environmental changes. Species diversity considers both species richness (number of species) and species evenness (relative abundance). Ecosystem diversity includes different habitats, communities, and ecological processes that occur in various environments. Together, these components create the complex web of life that sustains ecological balance and provides essential services to humanity.
Source: Idasara knowledge pack — english/AL_SCIENCE/biology v8, short_notes: Lesson 34 - Explore biodiversity as a component of the environment - Biodiversity and threats due to human actions
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