Ecology

Question 1

Primary Succession

Answer 1

• Area is brand new
• NO Soil
• Starts at bare rock
• Pioneer species is lichen or moss

Question 2

Secondary Succession

Answer 2

Ecological disturbance occurs (ex. flood, fire, tornado, deforestation)

Soil remains

Question 3

Pioneer Species

Answer 3

Resilient species that are the first to colonize barren environments

Question 4

Abiotic

Answer 4

Non-living

Question 5

Biotic

Answer 5

Living

Question 6

4 Main Biomolecules

Answer 6

• Lipids
• Proteins
• Carbohydrates
• Nucleic Acids

Question 7

Greenhouse gasses include…

Answer 7

Carbon dioxide, methane, and water vapor

Question 8

DDT is a chemical that was used for many years as an insecticide. DDT got into watersheds through runoff and eventually entered aquatic food webs. It was demonstrated to have reduced the shell thickness of the eggs of ospreys, which are fish-eating birds. The impact of DDT on osprey eggs best illustrates which of the following processes?

Answer 8

Biological Magnification

Question 9

Intraspecific Competition

Answer 9

Members of the SAME species compete

Question 10

Interspecific Competition

Answer 10

Members of DIFFERENT species compete

Question 11

Allopatric speciation

Answer 11

occurs when a species separates into two separate groups that are isolated from one another