APES Unit 2: 2.1 and 2.2 review

What does biodiversity refer to?

• Biodiversity refers to the variety of life on Earth at all levels, from genes to species to ecosystems.

• Biodiversity refers to the study of weather patterns and climate change.

• Biodiversity refers to the process of photosynthesis in plants.

• Biodiversity refers to the movement of tectonic plates beneath the Earth's surface.

Why is high biodiversity important for ecosystems?

• High biodiversity ensures that ecosystems can recover from disturbances such as droughts, diseases, or fires.

• High biodiversity causes ecosystems to become unstable and collapse.

• High biodiversity reduces the number of species in an ecosystem.

• High biodiversity prevents any changes from occurring in ecosystems.

Which of the following is NOT one of the three main types of biodiversity recognized by scientists?

• Genetic Diversity

• Species Diversity

• Ecosystem Diversity

• Climate Diversity

What is genetic diversity?

• Genetic diversity is the variety of genes within a population.

• Genetic diversity is the number of species in an ecosystem.

• Genetic diversity is the process of evolution in animals.

• Genetic diversity is the adaptation of organisms to their environment.

Which type of biodiversity refers to the number of species in an ecosystem and how evenly individuals are distributed among those species?

• Genetic Diversity

• Species Diversity

• Ecosystem Diversity

• Population Diversity

What is ecosystem diversity?

• Ecosystem diversity is the variety of ecosystems within a given region.

• Ecosystem diversity is the variety of species within a population.

• Ecosystem diversity is the genetic variation within a species.

• Ecosystem diversity is the number of individuals in an ecosystem.

What does species richness refer to?

• Species richness is the number of species in a particular ecological community or in another specified area.

• Species richness is the total biomass of all organisms in a community.

• Species richness is the average population size of a species in an area.

• Species richness is the diversity of genetic traits within a species.

Match the following types of biodiversity to their correct examples :

• Variety of genes within a population

• Ecosystem Diversity

• Variety of ecosystems within a region

• Genetic Diversity

• Number of species in an ecosystem

• Species Diversity

Why are tropical rainforests important for global biodiversity?

• Tropical rainforests support more species than any other kind of ecosystem and are important for global biodiversity.

• Tropical rainforests have the least number of species compared to other ecosystems.

• Tropical rainforests are not important for biodiversity.

• Tropical rainforests only support plant species and not animals.

Which group has the largest estimated number of undescribed species?

• Insecta

• Chordates

• Fungi

• Mollusca