Photosynthesis and Flow of Energy

Which of the following best summarizes photosynthesis?

• An adaptation of plants that allows them to add nutrients to the soil

• A chemical reaction involving nitrogen and other atmospheric gases

• A process by which plants produce sugar using the energy of sunlight

• An exchange of gases between animals and the air or water of their habitat

An incomplete diagram of the process of photosynthesis is provided. What is the missing component that correctly replaces the question mark to complete the diagram?

• Soil nutrients

• Water

• Thermal energy

• Glucose

Which type of energy conversion occurs during the process of photosynthesis?

• Chemical energy is converted into radiant energy

• Radiant energy is converted into thermal energy.

• Thermal energy is converted into chemical energy

• Radiant energy is converted into chemical energy

What kind of energy is necessary to initiate the process of photosynthesis?

• Radiant

• Heat

• Electrical

• Wind

Which of the following statements best describes the flow of energy in an energy pyramid?

• As you go higher in the pyramid, the amount of energy increases.

• There is less energy in a producer level than a consumer level.

• There is no energy above the level of producers in the system

• Each group receives only a small amount of the energy from the level below it.

What do the arrows represent in the diagram of a food chain?

• The order of size of organisms in the ecosystem

• The importance of organisms in the chain

• The direction of energy flow through organisms

• The energy increases as you move from left to right

What is an example of a decomposer?

• Plum
• Mushroom
• Deer
• Bird

Which organism is likely to be at the beginning of a food chain for a pond?

• Sunfish
• Freshwater shrimp
• Paramecium
• Green Algae

What is indicated by the diagram?

• Food web
• Food chain
• Food map
• Food menu

What is the first source of energy for all food webs?

• Plants
• Sunlight
• Mineral in the soil
• Decomposers