Pre-Exam

Amount (%) of energy lost between one trophic level and the next one within an ecosystem.

• 90 %

• 10 %

• 40 %

• 60 %

The nonliving part of an ecosystem.

• Climate

• Temperature

• Abiotic elements

• Biotic elements

It is an example of symbiosis

• A couple of ducks mating

• A lion hunting a zebra

• A flea on a dog

• A sick bird

Which of the following is an example of an abiotic factor?

• Air

• Plants

• Animals

• Bacteria

Oxygen and glucose made by plants is used by ______________________, that will use them to produce their own energy (ATP) and CO₂ .

• All of them

• Primary consumers

• Secondary consumers

• Decomposers

An example of a biotic factor is:

• A plant

• Sunlight

• Air

• Pure water

Which are the two components in an ecosystem?

• Plants and animals

• temperature and precipitation

• Biotic and abiotic

• Communities and populations

Organisms of different species living in the same space

• Environment

• Ecosystem

• Biome

• Community

Organisms that breakdown the remains of all the organisms within an ecosystem are named:

• Primary consumers

• Decomposers

• Secondary consumers

• Producers

Organisms that use solar energy to produce glucose and oxygen within an ecosystem are classified as__________________________in a food pyramid.

• Producers

• Primary consumers

• Secondary consumers

• Decomposers