Energy Flow in The Ecosystem (Environmental Science)

Producers make up more biomass than primary consumers because: Select one: a. only 10% of the energy at each trophic level is passed on to the next level. b. they do not eat anything. c. pound for pound, plant sugars are heavier than fat. d. both primary and secondary consumers eat grass.

A.

Which of the following geometric shapes best represents the change in energy and change in biomass from one trophic level to the next? Select one: a. pyramid b. dodecahedron c. sphere d. parabola

A.

Which of the following situations accurately describes a difference between a food chain and a food web? Select one: a. A carnivore receives 10% of the energy from it's prey in a food web. b. A carnivore eats both a rabbit and a mouse in a food web. c. A rabbit eats grass in a food chain. d. A rabbit receives 90% of the energy from the grass it eats in a food chain.

B

Most energy enters the ecosystem: Select one: a. through the process of cellular respiration. b. through the process of photosynthesis. c. by absorbing sun through the skin. d. by reflecting off the atmosphere.

B.

Unlike photosynthesis, cellular respiration: Select one: a. is an energy conversion b. does not require the intake of carbon dioxide c. involves primarily plants d. uses chlorophyll

B.

For most ecosystems, the ultimate source of energy is: Select one: a. plants. b. producers. c. the sun. d. water.

C.

Which of the following statements is true about photosynthesis and cellular respiration? Select one: a. Both processes use oxygen as a reactant. b. Plants perform photosynthesis. c. Plants perform cellular respiration. d. Plants perform both photosynthesis and cellular respiration.

D

While primary production refers to the synthesis of plant material, secondary productivity refers to the synthesis of: Select one: a. water. b. ecosystems. c. all abiotic factors. d. animal tissue.

D.

While primary production refers to the synthesis of plant material, secondary productivity refers to the synthesis of: Select one: a. water. b. ecosystems. c. all abiotic factors. d. animal tissue.

D.

The rate of primary productivity is equal to the rate of secondary productivity. Select one: True False

False.