A food chain would be a better resource than a food web to answer which question? a. How does energy move from an organism in one trophic level to an organism on the next trophic level? b. How does energy move within a trophic level? c. What preys on grasses? d. How is organic matter recycled in a forest?

A food chain would be a better resource than a food web to answer which question? a. How does energy move from an organism in one trophic level to an organism on the next trophic level? b. How does energy move within a trophic level? c. What preys on grasses? d. How is organic matter recycled in a forest?

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter20: Ecosystems And The Biosphere

Section: Chapter Questions

Problem 5RQ: Which term describes the process whereby toxic substances increase along trophic levels of an...

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Which term describes the process whereby toxic substances increase along trophic levels of an ecosystem? a. biomassification b. biomagnification c. bioentropy d. heterotrophy
Why are decomposers usually absent from food webs? A. Decomposers do not have a feeding relationship with other organisms B. Decomposers can operate at several different trophic levels C. Decomposers can produce their own food D. Decomposers can only access energy from dead organisms
Use the information and diagram to answer the following question. The energy pyramid is a shape often used to describe and identify roles of organisms in an ecosystem. image Using the sections of the pyramid provided, which answer choice describes a relationship found in an ecosystem? A. II represents secondary consumer and III represents a tertiary consumer, which explains why the top of the pyramid is smaller than the base. B. IV represents producers and I represents primary consumers which explains why the base of the pyramid is the largest. C. IV represents the top predator and I represents the primary producers, which explains why the base of the pyramid is larger than the top. D. I represents a predator and II represents a prey which explains why the top of the pyramid is smaller than the base.
Which statement best explains why persistent, fat-solublechemicals such as methylmercury accumulate in the highesttrophic levels?a. Animals at the highest trophic levels eat the lowest-quality food.b. The amount of biomass increases in each trophic level, and largeorganisms accumulate the most methylmercury.c. Large organisms are often herbivores, so they would consumemethylmercury directly.d. Methylmercury does not leave an animal’s body; each predatortherefore consumes the mercury contained in many prey.
a This food web shows the flow of energy through a desert ecosystem Which correctly describes a relationship shown on this food web ? A. The coyote and the mountain lion have a predator /prey relationship B. The coyote and the mountain lion have a producer /consumer relationship C. The golden - mantled squirrel and the big sagebrush have a predator /prey relationship . D. The golden -mantled squirrel and the big sagebrush have a producer /consumer relationship
Which statement about energy flow in ecosystems is accurate? A.Energy flow reaches an equilibrium within ecosystems such that every trophic level has the same amount of energy. B. Because forests have relatively few large trees which support numerous smaller organisms, they have less energy at the lowest trophic level than at higher trophic levels. C. Energy is recycled within ecosystems, moving from producers to consumers to decomposers and back to producers. D. Energy flows through ecosystems with some lost at every transition resulting in lower trophic levels always containing more energy than higher trophic levels. E. Aquatic ecosystems have more energy at higher trophic levels than at lower trophic levels, whereas terrestrial ecosystems have more energy at lower trophic levels. Please answer asap and type your answer and do not copy from anywhere please
What does each pie slice represent? a. Amount of energy available to support each trophic level b. Amount of energy that can be converted to biomass at a higher trophic level c. Amount of energy available from the sun d. Inefficiency of energy flow from one trophic level to the next
Use the information and model to answer the following question. This model describes energy movement in an ecosystem. image What should be placed in box 5 to BEST complete the model? A. Autotrophs, because all food webs begin with autotrophs obtaining solar energy from the sun. B. Autotrophs, because all food webs in an ecosystem begin with autotrophs. C. Decomposers, because they are at the top of the food web and receive the most energy. D. Decomposers, because they break down organisms from all trophic levels to obtain energy.
Which is the correct answer please? What would a biologist say is the role of nutrients in an ecosystem? A. Nutrients are substances that prevent eutrophication and oxygen loss in lakes B. Nutrients are elements that are permanently destroyed when organisms decompose C. Nutrients are carbohydrates that fuel photosynthesis for primary producers D. Nutrients are elements from which organisms construct the molecules of life.
Which answer best describes the term realized niche? A. All of the resources an organism can consume and all the habitats an organism can occupy. B. The habitat where a species actually lives and the resources it consumes when it is dealing with competition and other interactions in its community.
How do bio-indicators determine the health of a water system? A. A few species of macro-invertebrates will be present in a healthy body of water B. Many different species of macro-invertebrates will be present in a healthy body of water C. No species of macro-invertebrates will be present in a healthy body of water D. There is no relationship between the number of species of bio-indicators and the health of a body of water
Animals are unable to make their own energy, yet you obtain energy when you eat animal food products. Explain how this illustrates the flow of energy through an ecosystem.