Ecology Review Jeopardy

The percentage of energy that is passed onto the next trophic level.

What is 10%.

CO 2 + H 2 O  C 6 H 12 O 6 + O 2

What is the equation for photosynthesis.

Eats both plants and animals.

What is an omnivore.

Shows the direction that energy flows, from producers to top carnivores, in a simplified single path.

What is a food chain.

Makes their own energy/food source (e.g. a plant).

What is an autotroph.

Waste or decaying matter from plants or animals.

What is detritus.

Explain the difference between the following terms: population, community.

Population is a group of the same species. Community is a group of different populations.

Why do oligotrophic lakes eventually become eutrophic lakes?

Sediment builds up over time from erosion and human activity, making it shallower.

This type of lake has more communities (more biodiversity). Explain why.

Eutrophic. There are more nutrients (although less oxygen).

The accumulation of toxins up the food chain.

What is bioaccumulation / bioamplification.

The water quality test that indicates the presence of decomposing microorganisms in the water (e.g., bacteria).

What is the B.O.D. (Biological Oxygen Demand).

The source of pollution of a murky, stinky river.

What is non-point source pollution.

Word AND chemical equation of cellular respiration.

oxygen + sugar (glucose)  carbon dioxide + water O 2 + C 6 H 12 O 6  CO 2 + H 2 O

The temperature when water becomes less dense.

What is 4˚C.

Nonliving factor that can affect an ecosystem. Give an example.

What is abiotic factor. (e.g., temperature, water, pH…)

What are the four factors that determine a species’ biotic potential?

1.Length of the reproductive life. 2.Birth potential. 3.Procreation. 4.Capacity of survival.

The form of nitrogen that plants need…and how they get it.

What is NITRATE, and bacteria/lightning.

Describe how too much nutrients eventually lead to death in an aquatic ecoystem.

Aquatic plants thrive – algal bloom. Build up of detritus from plants. More decomposition, therefore more bacteria. Decomposers (bacteria) use up O 2 (high B.O.D.). Amount of dissolved O 2 drops – death to aquatic life.

Options when a consumer’s prey population drops.

Start preying on something else. Migrate. Lower own population (die or breed less).

Name two problems with pesticides.

Fat-soluble – stays in tissues and leads to bioamplification; pests build up resistance.

Layer between the epilimnion and the hypolimnion.

What is the thermocline.

Occurs during spring/fall turnover in lakes.

Cold surface water (more dense) drops, carrying dissolved oxygen, nutrients from lower levels of water get recycled.

How water gets from plants to the atmosphere in the water cycle.

What is transpiration.

The view that we should not interfere (for good or bad) with nature.

What is ownership view.

The view that nature has stuff that we need and should use.

What is frontier view.

The view that we should protect and actively save nature.

What is stewardship view.

A nutrient with small availability affects population growth.

What is a Limiting Factor.