Conservation of Matter and Energy Quiz

According to the principle of conservation of matter and energy, what happens to matter and energy in an ecosystem?

• They can only be transformed or transferred

• They can be created and destroyed

• They can only be transferred

• They can only be transformed or transferred

What is the process by which a plant transforms carbon dioxide and water into glucose and oxygen?

• Respiration

• Transpiration

• Photosynthesis

• Decomposition

What is the role of producers in the energy flow of an ecosystem?

• They eat plants for their growth

• They break down dead bodies

• They release nutrients into the soil

• They catch sunlight and convert it into chemical energy

What happens to energy at each energy transfer in an ecosystem?

• It is stored in glucose

• It is created

• It is destroyed

• It is lost as heat

What is the role of decomposers in an ecosystem?

• They break down dead bodies, releasing nutrients into the soil

• They eat plants for their growth

• They catch sunlight and convert it into chemical energy

• They release nutrients into the soil

What is the impact of an extinct species on a food web?

• It affects other species that relied on it for food

• It has no impact

• It increases the energy flow

• It decreases the matter cycling

What does the food web in an ecosystem show?

• The number of producers

• The number of decomposers

• Organisms' multiple dining options and how energy and matter move through the ecosystem

• The number of carnivores

What is the role of animals in matter cycling in an ecosystem?

• They eat plants, gaining matter for their growth

• They release nutrients into the soil

• They break down dead bodies

• They pull in carbon dioxide from the air and nutrients from the soil

What is the impact of adding or removing a species in an ecosystem?

• It has no impact

• It affects the energy flow

• It affects the matter cycling

• It increases the number of producers

What sustains the complexity of life on our planet according to the principles of conservation of matter and energy?

• Photosynthesis and respiration

• Matter cycles and energy flows

• Decomposition and transpiration

• The number of carnivores and herbivores