Biodiversidad

Species richness refers to (a)   in an ecosystem.

• The number of different ecosystems

• The number of individuals within an ecosystem

• number of different species in an ecosystem

• The number of dominant species in an ecosystem

What is biodiversity?

• The variety of life in the world or in a particular habitat or ecosystem

• The number of ecosystems in a region

• The genetic variation within a species

• The number of species in a food chain

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Which of the following is a measure of biodiversity?

• Species richness

• Biomass

• Energy flow

• Carbon footprint

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Why is biodiversity important for ecosystems?

• It increases ecosystem productivity

• It decreases the number of species

• It reduces genetic variation

• It limits ecosystem services

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What is the main cause of biodiversity loss?

• Habitat destruction

• Increased rainfall

• Natural selection

• Genetic mutation

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Which of the following is a biodiversity hotspot?

• Amazon Rainforest

• Sahara Desert

• Antarctic Ice Sheet

• Gobi Desert

How does deforestation affect biodiversity?

• It decreases biodiversity by destroying habitats

• It increases biodiversity by creating new habitats

• It has no effect on biodiversity

• It only affects plant species

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What role do keystone species play in biodiversity?

• They have a disproportionately large effect on their environment

• They are the most abundant species in an ecosystem

• They are the least important species in an ecosystem

• They are the most genetically diverse species

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NGSS.MS-LS2-2

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Which of the following practices can help conserve biodiversity?

• Establishing protected areas

• Increasing urban development

• Expanding agricultural land

• Introducing invasive species

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What is the relationship between biodiversity and ecosystem stability?

• Higher biodiversity leads to greater ecosystem stability

• Higher biodiversity leads to less ecosystem stability

• Biodiversity and ecosystem stability are unrelated

• Ecosystem stability decreases with biodiversity

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