2.1 & 2.4 Retake

Front

What is the likely long-term outcome for hare, lynx, and other predator populations if a predator begins preying on hares?

Back

The hare, lynx, and other predator populations would all decline.

Front

What is the primary source of energy for organisms in a marine ecosystem?

Back

Solar energy captured by phytoplankton.

Front

If 20 kJ of energy is available to organisms in trophic level W, how much energy is available to primary consumers?

Back

2,000 kJ.

Front

What happens to light penetration as ocean depths increase?

Back

The amount of light penetrating to those depths decreases.

Front

Which trophic level generally has the greatest biomass in a biomass pyramid?

Back

Producer.

Front

Define 'trophic level'.

Back

A trophic level is a position in a food chain or food web, representing the flow of energy and nutrients through an ecosystem.

Front

What is an energy pyramid?

Back

An energy pyramid is a graphical representation showing the flow of energy at different trophic levels in an ecosystem.

Front

Explain the role of producers in an ecosystem.

Back

Producers, such as plants and phytoplankton, convert solar energy into chemical energy through photosynthesis, forming the base of the food chain.

Front

What is the difference between autotrophs and heterotrophs?

Back

Autotrophs produce their own food (e.g., plants), while heterotrophs consume other organisms for energy (e.g., animals).

Front

What is biomass?

Back

Biomass is the total mass of living matter in a given area or volume, often used to measure the productivity of an ecosystem.