Energy Flow in Marine Ecosystems

The video explains the structure and dynamics of marine food webs, highlighting the roles of producers, consumers, and decomposers. It discusses energy transfer through trophic levels and the concept of energy pyramids, emphasizing the importance of photosynthesis and nutrient recycling in ecosystems.

In a marine food web, what does the direction of the arrow indicate?

• The color of the organism

• The speed of the organism

• The size of the organism

• The direction of energy transfer

Which of the following is an example of an autotrophic producer organism?

• Zooplankton

• Seaweed

• Crabs

• Sharks

What is the primary function of chemosynthetic organisms in the marine ecosystem?

• To photosynthesize using sunlight

• To consume other organisms

• To break down chemical compounds for energy

• To decompose dead matter

Which of the following is a first order consumer in a marine food web?

• Seaweed

• Sharks

• Zooplankton

• Bacteria

What type of organisms are crabs and rock lobsters in the marine food web?

• First order consumers

• Producers

• Scavengers

• Decomposers

Which group of animals includes apex predators in the marine ecosystem?

• First order consumers

• Second order consumers

• Third order consumers

• Producers

What role do decomposers play in the marine ecosystem?

• They produce energy through photosynthesis

• They are apex predators

• They consume living organisms

• They recycle nutrients by breaking down dead matter

What does an energy pyramid represent in an ecosystem?

• The number of organisms at each level

• The speed of energy transfer

• The flow of energy through the ecosystem

• The color of organisms

How much energy is typically transferred from one trophic level to the next?

• 100%

• 50%

• 25%

• 10%

What happens to the majority of energy in an ecosystem?

• It is lost as heat during daily activities

• It is transferred to the next trophic level

• It is stored in the organisms

• It is used for photosynthesis