What are the different levels of biodiversity?
Biodiversity can be discussed at three levels:
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Genetic Diversity: It refers to the variation of genes within species. For example, human beings belong to the same species Homo sapiens but differ in height, colour, and physical appearance due to genetic diversity. This diversity is essential for healthy breeding of population of species.
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Species Diversity: It refers to the variety of species and relates to the number of species in a defined area. It can be measured through species richness, abundance and types. Areas rich in species diversity are called hotspots of diversity.
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Ecosystem Diversity: It refers to the broad differences between ecosystem types and the diversity of habitats and ecological processes occurring within each ecosystem type.
Explanation
The textbook clearly outlines three levels of biodiversity: genetic diversity (variation within species), species diversity (variety of species in an area), and ecosystem diversity (differences between ecosystems and habitats). This classification helps students understand biodiversity at different scales of biological organization.
Solution Steps
Step 1: Identify the three levels of biodiversity from the text
Step 2: Define each level with examples from the context
Step 3: Present in a structured format suitable for a 2-mark answer