Unit 1 Ecological Principles

In what year was the Clean Water and Air Act created?

• 1948

• 1958

• 1968

• 1978

Which of the following does NOT influence an organism’s niche?

• Competition with other species

• Mutualism

• Commensalism

• Parasitism

According to the presentation, ecosystem management was broadened by the establishment of which of the following in 1978?

• Environmental Protection Agency

• Bureau of Fisheries

• Conservation Biology

• Biological Survey

Which of the following is known to cause primary succession?

• Glacier movement

• Tornadoes

• Floods

• Acid rain

Select all the positive ecological interactions between organisms.

• Commensalism

• Competition

• Mutualism

• Predation

Which of the following does NOT conduct nitrogen fixation?

• Humans

• Nitrogen-fixing bacteria

• Algae

• Peanuts

Which of the following best describes respiration?

• Absorption of light by chlorophyll

• Intake of oxygen to convert glucose to energy

• Release of water vapor

• Splitting of atmospheric nitrogen atoms to bond with oxygen

Where is the phosphorus cycle primarily conducted?

• In air and volcanoes

• In water and atmosphere

• In soil and plants

• In volcanoes and lightning

Which of the following is NOT a category of wetland biome?

• Tropical

• Bog

• Marsh

• Fen

Which of the following best describes a pioneer species?

• The most important species which needs to be protected

• The first species to colonize an area in primary succession

• The first species to grown in an area of secondary succession

• The species which live the longest in a habitat