Energy transfer

What do producers in a food chain primarily use to create their food?

• Water

• Sunlight

• Carbon dioxide

• Soil nutrients

What is the primary consumer in the given food chain example?

• Snake

• Grasshopper

• Hawk

• Mouse

According to the 10% rule, how much energy is transferred from one trophic level to the next?

• 20%

• 10%

• 5%

• 50%

What is the correct sequence of consumers in the food chain from primary to quaternary?

• Hawk, Snake, Mouse, Grasshopper

• Snake, Hawk, Mouse, Grasshopper

• Mouse, Grasshopper, Hawk, Snake

• Grasshopper, Mouse, Snake, Hawk

How is energy measured in a food chain?

• Cubic meters

• Liters

• Kilojoules or Kilocalories

• Grams

What happens to the 90% of energy that is not transferred to the next trophic level?

• It is stored for later use

• It is lost to the environment as heat

• It is converted into matter

• It is used for growth

What is the shape of an energy pyramid intended to represent?

• The increasing number of organisms at higher levels

• The decreasing amount of energy and number of organisms at higher levels

• The stability of ecosystem populations

• The cyclic nature of energy flow

If the producers have 10,000 kilojoules of energy, how much energy do the secondary consumers have?

• 1,000 kilojoules

• 100 kilojoules

• 1 kilojoule

• 10 kilojoules

What trophic level do primary consumers occupy in an energy pyramid?

• Third

• First

• Second

• Fourth

If the tertiary consumers have 0.01 kilojoules of energy, how much energy do the producers have?

• 1 kilojoule

• 100 kilojoules

• 10 kilojoules

• 0.1 kilojoules