Ecology Test 2022-23

Front

What is Net Productivity?

Back

Net productivity is the organic materials that remain after photosynthetic organisms in the ecosystem have used some of these compounds for their cellular energy needs (cellular respiration).

Front

What is a biotic factor?

Back

A biotic factor is a living component of an ecosystem, such as plants, animals, and microorganisms. An example is fish.

Front

What is the primary source of energy on Earth?

Back

The primary source of almost all energy on Earth is the sun.

Front

What do all life functions require?

Back

All of life's functions require energy.

Front

What role do bacteria play in an ecosystem?

Back

Bacteria are decomposers, which means they break down dead organic material and recycle nutrients back into the ecosystem.

Front

Define Gross Productivity.

Back

Gross productivity is the total amount of organic material produced by photosynthetic organisms in an ecosystem.

Front

What is Primary Productivity?

Back

Primary productivity is the rate at which energy is converted by photosynthetic and chemosynthetic autotrophs to organic substances.

Front

What is a consumer in an ecosystem?

Back

A consumer is an organism that obtains energy by feeding on other organisms, such as animals that eat plants or other animals.

Front

What is a producer in an ecosystem?

Back

A producer is an organism that can make its own food through photosynthesis or chemosynthesis, such as plants.

Front

What is a scavenger?

Back

A scavenger is an organism that feeds on dead or decaying organic matter, such as vultures.