Ecology Review

How much energy gets transferred at every level going up on the pyramid?

• 10%

• 5%

• 3%

• 15%

What increases as it travels up the pyramid?

• Toxins

• Nuterients

• Energy

• Carbohydrates

As you move up the energy pyramid, in what form is energy lost in (used for cell processes)?

• Solar

• Chemical

• Heat

• Mechanical

Where do producers get their energy from?

• Primary consumers

• Sun

• Heat from the Earth

• Radiant light from the stars

What is the process of denitrification?

• Extra nitrogen in the soil gets put back out into the air.

• Bacteria change nitrogen into ammonia.

• Ammonium gets changed into nitrates by bacteria.

• Plants absorb nitrates from the soil into their roots. Then the nitrogen gets used in amino acids, nucleic acids, and chlorophyll.

What is the process of assimilation?

• Plants absorb nitrates from the soil into their roots. Then the nitrogen gets used in amino acids, nucleic acids, and chlorophyll.

• Bacteria change nitrogen into ammonia.

• Ammonium gets changed into nitrates by bacteria.

• Extra nitrogen in the soil gets put back out into the air.

What is the process of nitrification?

• Extra nitrogen in the soil gets put back out into the air.

• Ammonium gets changed into nitrates by bacteria.

• Plants absorb nitrates from the soil into their roots. Then the nitrogen gets used in amino acids, nucleic acids, and chlorophyll. 

• Bacteria change nitrogen into ammonia.

What is the process of nitrogen fixation?

• Plants absorb nitrates from the soil into their roots. Then the nitrogen gets used in amino acids, nucleic acids, and chlorophyll.

• Extra nitrogen in the soil gets put back out into the air.

• Ammonium is converted into nitrites and nitrates. 

• Converting atmospheric nitrogen into ammonium.

What is a climax community?

• A small community in process of being developed

• An ecosystem at the risk of being wiped out

• A thriving ecosystem with complex food webs

• Barren land that will soon become advanced

What are the first organisms to take over in primary succession?

• Primary consumers

• Pioneer species

• Primary species

• Producers