Ecosystem ecology quiz

Why is phosphorus important to the ecosystem? Phosphorus is critical for the structure of nucleic acids. Phosphorus is a necessary component for the formation of bone. Phosphorus is an important component of cell membranes. Phosphorous is a component of teeth. All of these are reasons phosphorus is important.

All of these are reasons phosphorus is important.

What type of biome has short evergreen trees and shrubs with leathery leaves and is characterized by long, hot, dry summers and cool, damp winters? - Mediterranean - taiga - tundra - savana - desert

Mediterranean

Which of these must be converted from an atmospheric gas into a form that plants can take up from soil? water nitrogen carbon dioxide phosphorous oxygen

Nitrogen

Why is it more energetically efficient to be a vegetarian than to eat meat?

No energy is lost to another animal's metabolism when a person eats plants.

Which of the following biomes covers the greatest amount of Earth's surface? desert tropical forest taiga oceans grassland

Oceans

What is the major feature that defines a biome? its plant life all of these its soil microorganisms its animal life

Plant life

Why is the sun the ultimate source of energy for all carnivores?

Some of the energy produced during photosynthesis passes from one trophic level to the next as herbivores eat producers and are then eaten by carnivores.

Which statement is true about energy transfer? - Some of the molecules consumed by organisms are never incorporated into their tissues and is lost in feces. - Vegetarianism is equally as energy efficient as eating meat. - All of the energy from one trophic level is transferred to the next trophic level. - Indigestible plant parts transfer energy to the next trophic level. - all of the above

Some of the molecules consumed by organisms are never incorporated into their tissues and is lost in feces.

What type of biome is characterized by evergreen trees, with long and cold winters and only short summers? taiga tundra temperate grassland temperate deciduous forest savanna

Taiga

Which of the following is the result of the one-way path of energy flow through the ecosystem? - Tertiary consumers are often rare in an ecosystem. - The number of predators outnumbers the number of producers. - If a secondary consumer is removed from the ecosystem, another can easily replace it. - The one-way path of energy flow does not impact the ecosystem. - All of these are impacts of the one-way path of energy flow through the ecosystem.

Tertiary consumers are often rare in an ecosystem

After harvesting and selling a crop of corn, a farmer collects the corn stalks and feeds them to her cows. Why should the farmer add fertilizer containing nitrogen and phosphorus to the field before growing another crop?

The nitrogen and phosphorus the plants tookfrom the soil will not return to the field through decomposition.

To ensure a constant supply of fresh water, which statement about the water cycle must be true?

The rate of water withdrawal from natural sources must be less than the rate of replacement.

Why is water considered a renewable resource? Earth is constantly bombarded by microscopic ice meteors. Laws concerning water rights require that it be so designated. There is sufficient groundwater for the foreseeable future. Humans have had no significant impact on water supplies. Water resources are continually replenished by the water cycle.

Water resources are continually replenished by the water cycle.

An important role of nitrogen-fixing bacteria is to... convert gaseous nitrogen into ammonia. assist plants with photosynthesis. assist in the decomposition of prairie grass. decompose nitrogen-rich fungi. return nitrogen to the soil by decomposing bison waste

convert gaseous nitrogen into ammonia.