Biodiversity And Endangered Species Slides 1-43 E. Systems

The condition in which there are barriers to inbreeding between individuals of the same species separated by a portion of a mountain range is referred to as

• minute variations

• geographic isolation

• infertility

• differential breeding capacity

The creation of a new species is called...

• Mass extinction

• Speciation

• Sexual Selection

• None of these

All are evidence that organisms lived in the past except?

• Fossils

• Chemical Analysis

• DNA Analysis

• Karyotyping

What does biodiversity mean?

• Only one species in an area.
• The different amount of species in an area
• All abiotic life
• Nitrogen fixation

1. What makes a species invasive?

• Moving to a new ecosystem and taking resources from natives

• Not having papers

• Species that can't adapt

• Plants that take up too much space

An endangered species is

• One whose numbers are so small that it is at risk of extinction
  
• One whose not been spotted after many years.
• One whose numbers are abundant.

Which is the most endangered animal group?

• Mammals
• Amphibians
• Insects

All members of a species disappear

• endangered
• threatened
• extinct
• captive

Most significant cause of extinction

• poaching

• habitat destruction

• pollution

• exotic species

Which of these is NOT true of an R selected species?

• They have large clutch sizes in reproduction. 
• They often show up early in succession.
• They often have gestation periods longer than 6 months. 
• They reach sexual maturity quickly and their mother's do not take care of them.