Food Chains and Energy

In nearly all food chains the energy originates from the .........

What type of organisms are producers in a food chain?

What process to producers do that creates energy containing molecules such as glucose?

Which level of the food chain consists of herbivores?

• producers

• primary consumers

• secondary consumers

• decomposers

Name the snake's trophic level in this food chain?

Dry biomass is a more useful measurement than wet biomass because:

• Organisms contain lots of water.

• Water can be excreted by an organism.

• Body water does not contain energy that can be passed up the food chain.

• Water is not passed up the food chain.

On average, what percentage of energy is lost at each level of a food chain?

Which of these are sources of energy loss from a food chain? Select all correct answers.

• Photosynthesis

• Respiration

• Decomposition

• Excretion

• Digestion

Which level of a food chain would contain the least amount of dry biomass?

• Apex predator

• Decomposers

• Producers

• Primary consumers

Measuring the biomass at each trophic level in a food chain is useful because:

• It tells you how many organisms are in each level

• It tells you the size of the organisms in each level

• It is an indicator of the energy contained in each trophic level

• It indicates how fast a population is growing