Ecology Regents

Study of interactions between organisms and their environment 

• niche

• community 

• ecology

• ecosystem

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In this photo, what is an abiotic factor?

• Deer

• Grass

• rain

Organisms that obtains its energy from abiotic sources, such as sunlight or inorganic chemicals

• Autotroph

• Heterotroph

• Omnivore

• Carnivore

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What is the original source of almost all energy in most ecosystems?

• carbohydrates

• sunlight

• water

• carbon

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What is this picture describing?

• It is describing natural selection.

• It is describing direct competition between flamingos and ducks.

• It is describing abiotic factors of the tundra.

• It is describing the niche of each bird.

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The northern elephant seal was almost hunted to extinction in the 1800s. By the late 1890s, approximately one hundred seals were left, reducing the gene pool of the population. What will be the consequence of this reduction?

•  Competition within the population will increase.

• The surviving elephant seals will be better able to adapt.

•  Inbreeding will be less frequent among the remaining population.

• The elephant seals will be more vulnerable to environmental change. 

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The presence of wastes, such as plastic bags and motor oil, in lakes and streams miles away from developed areas suggests that

• . ecosystems are interconnected and human action can alter ecosystem equilibrium.

• recycling programs have failed to conserve biotic resources.
  

• natural processes can alter ecosystem stability.

•  direct harvesting practices have led to irreversible destruction of ecosystems.

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Diagram that shows all the feeding relationships of organisms within an ecosystem. The more connections, the more stable the ecosystem.

• Food Web

• Line Graph

• Energy Pyramid

• Ecosystem

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The number of different plants and animal found within an area. The more varied an ecosystem is, the more stable the ecosystem.

• Biodiversity

• Homeostasis

• Biotic

• Biosphere

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Organisms, known as producers, that synthesize their own food (glucose) by using the process of photosynthesis.

• Autotroph

• Heterotroph

• Carnivore

• Chloroplast

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