Marine Interactions Review

What is the term for maintaining an internal balance in organisms?

• Photosynthesis

• Homeostasis

• Desiccation

• Intolerance

Which environmental factor affects the rate of photosynthesis and heat?

• Water

• Sunlight

• Soil

• Wind

What is the most important photosynthetic organism mentioned?

• Algae

• Phytoplankton

• Trees

• Moss

What does desiccation refer to in the context of environmental factors?

• Overwatering

• Drying out from too much sun

• Lack of nutrients

• Excessive cold

What is an ectotherm?

• An organism that maintains a constant body temperature

• An organism that obtains body heat from its surroundings

• An organism that generates its own body heat

• An organism that lives in cold environments

Which of the following is true about most marine animals?

• They are endothermic

• They are ectothermic

• They maintain a constant body temperature

• They generate their own body heat

What is an endotherm?

• An organism that obtains body heat from its surroundings

• An organism that maintains a constant body temperature

• An organism that changes its body temperature with the environment

• An organism that lives in water

How does pressure change as you descend underwater?

• Decreases by 1 atm every 10 meters

• Increases by 1 atm every 10 meters

• Remains constant

• Decreases by 1 atm every 5 meters

What do aerobic organisms need to live?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

What affects the distribution of organisms according to their metabolic needs?

• Temperature

• Available nutrients

• Light intensity

• Water availability