Ecosystem Test Review Part I

Examples of abiotic factors in a lake are:

• Sunlight
• Water
• Oxygen
• All of the factors, sunlight, water and oxygen.

Which type of living organisms conduct photosynthesis? 

• Producers
• Consumers
• Decomposers
• Scavengers

Which of the following is NOT an essential ingredient that plants take in during photosynthesis?

• Water
• Oxygen
• Sunlight
• Carbon Dixiode

Classify the following organisms:
Mouse, rabbit, lion and zebra.

• Producers
• Consumers
• Decomposers
• Abiotic

Classify the following organisms:
Tree, flowers, grass, plankton

• Producers
• Consumers
• Decomposers
• Abiotic

Classify the following organisms:
Worms, mushrooms, bacteria

• Producers
• Consumers
• Decomposers
• Dead things

Identify one effect of removing sea otters from this food web:

• The population of sea stars will decrease
• The population of kelp and algae will decrease.
• The population of sea urchins will increase
• The population of sharks will increase

Identify a secondary concumer in this food web.

• Crab
• Sea star
• Sea otter
• Plankton

If an ecosystem is in equilibrium, the ecosystem is:

• Out of balance, with few producers.
• Balanced with the amount of producers and consumers
• Out of balance, with too many predators
• Equal, with too many producers

All energy on Earth originates from the _____________.

• Producers
• Sun
• Consumers
• Trees