Biodiversity

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

A population is

• a group of similar species in different areas

• a group of the same species in the same geographic area.

• a group of several species in the same geographic area

• a group of several species along with their abiotic factors in a small 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

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

• natural disaster
• predation
• disease
• parasitism

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 2 factors decrease population size?

• Immigration, Births
• Emigration, Births
• Emigration, Deaths
• Immigration, Deaths

 What is the name for this leveling off shown in the graph?

• logistic line
• carrying capacity
• climax point
• mediocre

What type of population growth is shown in the graph?  

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

When a population grows past the ecosystem's carrying capacity, what happens to the population?

• Continues to grow
• The population starts to die off to return to carrying capcity
• The population will go extinct due to lack of resources
• The population grows then finds a new carrying capacity