ecology test review

If the grass stores 10,000 kcal of energy, how much energy will the snake receive?

• 1000 kcal
• 100 kcal
• 10 kcal
• 1 kcal

If all the frogs were removed from this food chain, what will result?

• The grasshopper population will increase, the snake population will increase
• The grasshopper population will decrease, the snake population will increase
• The grasshopper population will increase, the snake population will decrease
• The grasshopper population will decrease, the snake population will decrease

Which of the following organisms pictured are herbivores?

• Worm, bird, hawk
• Worm, snail, rabbit
• Iguana, snail, rabbit
• Iguana, hawk, rabbit

Which of the following organisms pictured are in the first trophic level?

• Grass
• Worm, snail, rabbit
• Iguana, bird
• Hawk

Which of the following are secondary consumers?

• Grass
• Worm, snail, rabbit
• Iguana, bird
• Hawk

Nonnative organisms that spread widely throughout a community are known as an _________________

• invasive species
• keystone species
• primary scpecies
• secondary species

Only a small amount of the energy in a trophic level is transferred to the next trophic level. The rest of that energy is lost as heat. This is due to which of the following?

• the 50% rule
• The Energy Transference Principle
• the 10% rule
• The Trophic Level Progression

Insects, trees, and decaying carcasses of dead animals are examples of what type of factor in an ecosystem?

• biotic factor
• abiotic factor
• living factors
• resources

Which of the following is a producer?

• honey bee
• oak tree
• bacteria
• cow

Which of the following is a consumer?

• algea
• bacteria
• grass
• cat