Energy in Marine Ecosystems

What is photosynthesis?

• How fungi obtain energy

• The process in which green plants use oxygen to make carbon dioxide 
• The process in which green plants use carbon dioxide to make oxygen

• The process of absorbing energy by touching things 

Where does photosynthesis take place? 

• In the chloroplast of a plant cell

• In the mitochondria of a plant cell

• In the mitochondria of an animal cell

• In the chloroplast of an animal cell

How do plants affect the air that animals and people breathe?

• Plants use oxygen from the air to make their own food

• Plants release pollution into the air

• Plants take in carbon dioxide and release oxygen

• Plants take in oxygen and release carbon dioxide

What is the source of all energy in marine ecosystems? 

• autotrophs

• sun
• heterotrophs

• windmills

Which of the following is a biotic factor in a desert ecosystem? 

• sun
• cacti
• water
• sand

Which of the following is an abiotic factor in a marine ecosystem? 

• phytoplankton

• whale
• water salinity

• zooplankton

Producers are also known as . . .

• autotrophs

• heterotrophs

• photosynthesis

• respiration

Autotrophic plankton are known as:

• Photosynthesis

• Phytoplankton

• Zooplankton

• Respiration

Which of the following do plants use for photosynthesis? (Be sure to select all correct answers!)

• O₂

• CO₂

• H₂O

• C₆H₁₂O₆

Plants use ____________ to make their own food in the form of glucose.

• Water

• Sunlight

• Carbon dioxide

• All of these