Unit 2 part 1

Multiple Choice

The three types of biodiversity are

• genetic, species and ecosystem
• medical, agricultural, ethical
• habitat loss, pollution, overharvesting
• camera traps, invasive species, cookies

Multiple Choice

all individuals of the same species occupying the same area is

• an ecosystem

• a population

• a community

• a biome

• a biosphere

Multiple Choice

Which is true of the location above?

• It has low species richness

• It has low species evenness

• It has high species evenness

• It has both low species evenness and richness

• None of these

Multiple Choice

Which is true of the location above?

• It has high species evenness

• It has low species evenness

• It has low species richness

• It has both low species evenness and richness

• None of these

Multiple Choice

An example of a r-strategist (-selected) species is

• an elephant

• a human

• a whale

• an eagle

• a dandelion

Multiple Choice

Which below is TRUE?

• Generalist species occupy very narrow niches

• R- strategist species are very prone to extinction

• Specialist species have a limited diet

• K-strategists species give birth to numerous offspring with little parental care

• Generalist species can't make use of a variety of environmental resources

Multiple Choice

An example of a K-strategist (-selected) species is

• a cockroach

• a housefly

• a rabbit

• an elephant

• none of these

Multiple Choice

A species that plays a critical role in the health, maintenance, growth, or definition of an ecosystem.

• keystone

• invasive

• engineer

• predator

Multiple Choice

Why are bees considered a keystone species?

• The honey they make supports the bear population

• They pollinate flowers that produce fruit which supports the ecosystem

• They sting when threatened

• They live in hives

Multiple Choice

A life form that is very sensitive to environmental changes in its ecosystem. They can give us early-warning messages that a habitat is suffering.

• Indicator Species

• Flagship Species

• Predators

• Ecosystem Engineers

Multiple Choice

Based on the graph shown, how can you tell sea otters are a keystone species?

• as the sea otter population decreases, biodiversity increases
• as sea otter population increases, biodiversity increases
• changes in the sea otter population have little effect on biodiversity 
• the sea otter population dereases due to the presence of urchins

Multiple Choice

Which of the following leads to a decrease in biodiversity?

• introduction of invasive species

• prevention of erosion

• ecological land use planning

• pollution control

Multiple Choice

They may be able to live in only one type of habitat, tolerate only a narrow range of climatic and other environmental conditions, or use only one type or a few types of food.

• generalist species

• specialist species

Multiple Choice

The area under the curve of the graph is called

• The zone of tolerance

• Geographic isolation

• Population bottleneck

• Founder Effect

• Species richness