Biodiversity Check for Understanding

What is species diversity?

• The number and variety of species in a community

• The variety of genes in a population or species

• The variety of ecosystems in a region

• The variety of habitats in a community

What is genetic diversity?

• The number and variety of species in a community

• The variety of genes in a population or species

• The variety of ecosystems in a region

• The variety of habitats in a community

Which of the following is an example of species diversity?

• Deserts, grasslands, forests, mountains

• The forest in Yosemite National Park has 37 different tree species

• The same species of snail grow different patterns on their shells

Which of the following is an example of genetic diversity?

• Deserts, grasslands, forests, mountains

• The forest in Yosemite National Park has 37 different tree species

• The same species of snail grow different patterns on their shells

What is ecosystem diversity?

• The number and variety of species in a community

• The variety of genes in a population or species

• The variety of ecosystems in a region

What is a niche?

• The role the species plays in an ecosystem

• The variety of genes in a population or species

• The variety of ecosystems in a region

What are indicator species?

• Species that can live in a wide range of environments

• Species that are sensitive to changes in an ecosystem

• Species that are responsible for pollination

• Species that affect the type and abundance of other species in an ecosystem

Which is an example of a generalist species?

• A raccoon - omnivore that can thrive on many different foods, including human garbage

• A koala - herbivore that only eats eucalyptus leaves

• A Canada Lynx - carnivore that preys upon the snowshoe hair

• A sword-billed hummingbird that mainly feeds on the nectar of flowers with long corollas

How do nonnative / invasive species threaten native species?

• They say mean things to them

• The invasive species were there first

• Competition for resources

A species that may cause population crashes and extinction of dependent species if removed from the community.

• Keystone species

• Ecospecies

• Not this species

• Not this one either