Coyote, wolves, and other carnivores occasionally kill chickens, pigs, and cows that live on farms, although they mostly eat small mammals that live in the wild. Farmers will frequently kill these predators to protect their livestock. Which result is most likely to occur when the predator population decreases (Standard 6.1d, 6.1e)?

Herbivores will exceed carrying capacity and begin eating crops.

The amount of healthy livestock on the farm will double in size.

More grasses and seeds will be available for livestock to consume.

Decomposers will take the place of predators in the ecosystem.

The amount of parasites infecting the predators will increase.

All life requires energy, carbon, oxygen, hydrogen, and nitrogen. Which statement best describes how they are used in the biosphere? (Standards 6.1a, 6.1b)

Elements are recycled, but energy must be added from the outside.

Energy is recycled but elements must be added from the outside.

Elements are recycled, but energy must be added from the outside.

Both energy and elements are recycled.

Neither energy nor elements are recycled

The amount of elements and energy constantly increase

What are the two major life processes that involve carbon and oxygen (Standards 6.1d, 6.1e)?

coal formation and photosynthesis

fuel combustion and open burning

nitrogen fixation and denitrification

Ecology Unit Post-assessment (Grade 8)

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Tagscience

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Total Contribution - 48 | Total attempts - 15,497

Questions: 12 | Attempts: 91 | Updated: Mar 21, 2023

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Ecology Unit Post-Assessment (Grade 8)

Questions and Answers

Ecology Unit Post-assessment (Grade 8)

In the food web depicted below, which organism is the autotroph (Standards 1.1a, 1.1b, 1.1c, 6.1a)?

What important biotic factor is missing from the food web (Standards 1.1b, 1.1c, 6.1a, 6.1g)?

The process is best described as (Standards 6.3b, 6.3c):

Which of the following organisms could fit in the space labeled x in this food chain? (Standards 1.1a, 1.1b, 1.1c) Grass → X → Snake → Puma

All life requires energy, carbon, oxygen, hydrogen, and nitrogen. Which statement best describes how they are used in the biosphere? (Standards 6.1a, 6.1b)

The main source of energy for a wetlands ecosystem is (Standard 1.1b, 1.1e, 1.1f)

What are the two major life processes that involve carbon and oxygen (Standards 6.1d, 6.1e)?

Which term represents an indirect economic value of biodiversity?

Rate, on a scale of 1 – 4, 1 being the lowest and 4 being the highest, how much do you know about ecology?

Rate, on a scale of 1 – 4, 1 being the lowest and 4 being the highest, how interested you are in ecology?