Module 1 - Day 12 Test Day!

Why are nitrogen fixing bacteria needed for organisms?

• They convert ammonia into usable nitrogen.

• They convert nitrate into usable nitrogen.

• They convert atmospheric nitrogen into usable nitrogen.

• They convert ammonium into usable nitrogen.

When organisms begin to ignore something

• Hibernation

• Habituation

• Estivation

• Conditioning

What makes a population become logistic growth?

• Reaching its carrying capacity.

• Going above its carrying capacity.

• When death rates are greater than birth rates.

• When birth rates are greater than death rates.

Respiration releases ________ gas and use _______ gas.

• carbon dioxide; oxygen

• oxygen; carbon dioxide

• nitrogen; oxygen

• oxygen; nitrogen

What is the purpose of courtship dancing?

• To survive.

• To find prey.

• To escape from predators.

• To get a mate.

Which type of organisms have the largest biomass?

• Tertiary consumers

• secondary consumers

• primary consumers

• producers

What is a part of the water cycle?

• Transpiration

• Respiration

• Photosytnthesis

• Combustions of fossil fuels

What is a biotic factor that limits population density?

• Oxygen

• Prey

• Carbon dioxide

• Water

Why is there usually no more than 4 trophic levels?

• More energy is available at higher trophic levels.

• Energy is gained as you move up trophic levels.

• Energy is lost as you move up trophic levels.

• This is false, you can have up to 5 trophic levels, easily.

Why can polar bears live in the Arctic, but brown bears cannot?

• Polar bears are white, so they can live there.

• Brown bears can live in the Arctic, but are rarely seen.

• Polar bears have adaptations that allow them to survive.