Major Components of an Ecosystem

The Sun is a

• Tertiary Producer of energy

• Secondary source of energy

• producer of water

• Primary producer of energy

The green color of plants that is produced from organelles called

• cell membranes

• cytoplasm

• chloroplasts

• vacuoles

Which statement below best describes the flow of matter and energy through trophic levels?

• Energy is transferred between organisms, and matter is released as heat.

• Matter decreases by 10% as organisms consume one another.

• Energy and matter are recycled by decomposers

• Energy flows from one direction, and matter cycles.

Matter flows through the trophic levels of food webs when carbon dioxide in the atmosphere is converted into a chemical compound through which process?

• Decomposition

• Photosynthesis

• Cellular Respiration

• Nitrogen Fixation

Which one of these organisms would be classified as a tertiary consumer?

• mouse

• frog

• hawk

• snake

What process do plants use to convert sunlight into chemical energy?

• Photosynthesis

• Respiration

• Transpiration

• Fermentation

Which of the following is an example of a primary consumer?

• Rabbit

• Eagle

• Grass

• Fox

In a food chain, which level typically has the highest biomass?

• Decomposers

• Producers

• Primary consumers

• Tertiary consumers

What role do decomposers play in an ecosystem?

• They are the top predators in the food chain.

• They break down dead organic matter and recycle nutrients.

• They consume primary consumers.

• They produce energy through photosynthesis.

Which of the following processes is responsible for the release of energy from glucose?

• Photosynthesis

• Cellular Respiration

• Transpiration

• Fermentation