Exploring Food Chains and Food Webs

What is the primary source of energy in a food chain?

• Water

• Animals

• Plants

• The Sun

Which organisms are capable of using sunlight to create usable energy?

• Decomposers

• Secondary consumers

• Primary consumers

• Producers

What do autotrophs produce using sunlight?

• Oxygen

• Carbon dioxide

• Food

• Water

Which level of consumer directly eats producers?

• Primary

• Secondary

• Tertiary

• Quaternary

What does 'tertiary' mean in the context of food chains?

• Second level

• Fourth level

• Third level

• First level

Which trophic level is directly above primary consumers in a food chain?

• Quaternary consumers

• Tertiary consumers

• Secondary consumers

• Producers

What percentage of energy is typically transferred from one trophic level to the next?

• 10%

• 25%

• 50%

• 75%

Why is the biomass greatest at the producer level in a food pyramid?

• They have the most energy available

• They are larger in size

• They reproduce more quickly

• They live longer

How much energy does a mouse use from the food it consumes?

• 10% is used, 90% is stored

• 25% is used, 75% is stored

• 50% is used, 50% is stored

• 90% is used, 10% is stored

To match the energy of one soybean, how many soybeans worth of energy does a hawk need to consume?

• 10

• 1000

• 100

• 10000