Unit 1 Spring 2022

Biodiversity, aka biological diversity, usually refers to

• the same species in a general location

• the number of different species in a given area

• the number of animal species in a given area

• the number of plant species in a given area

Which of the following will increase the size of a population?

• emigration and births
• immigration and deaths
• immigration and births
• emigration and deaths

Which of the following is a density-dependent limiting factor?

• human activities 
• unusual weather
• competition
• natural disaster

Diseases may spread more rapidly when an area is crowded, so disease is considered to be a

• type I survivorship curve
• population crasher
• density-dependent limiting factor
• population enhancer

What type of growth is shown on this graph?

• logistic
• exponential
• average
• density-independent

What type of population growth is shown in the graph?  

• logistic growth
• logical growth
• exponential growth
• density-dependent growth

Why is "A" less biodiverse than "B"?

• Image "A" is more biodiverse.

• Image "A" has many corn plants and this makes it have high "rich" biodiversity.

• Image "A" has a lot more plants than image "B"

• Even though "A" has a lot of corn plants they are all the same species and makes this a low "poor" biodiverse area.

The end result of ecological succession is usually a(n)

• A.land biome.

• B.aquatic biome.

• C.unstable community.

• D.climax community.

. Which of the following is an example of primary succession?

• A.lichens growing on rocks following a volcanic eruption

• B.grasses growing after a forest fire

• C.oak trees replacing pine trees in a forest

• D. non-native species introduced into a climax community

A volcano in a mountainous, wooded region erupts, spewing tons of ash and destroying the forested area around the volcano. If the volcano remains dormant during

the next 1000 years, what will probably happen?

• The area will be repopulated by trees, eventually becoming a

  forest again.

• The mountains will erode and remain without life.

• The area will remain unchanged, covered by volcanic ash.

• The area will turn into a completely different habitat, such as

  desert of plains.