EOC Review Ecology

Which of the following are considered biotic factors of an environment?

• water

• rock

• animal carcass

• temperature

Tags

NGSS.MS-LS2-4

Which of the following are considered abiotic factors of an environment?

• plant

• cloud

• animal

• egg

Tags

NGSS.MS-LS2-3

Corals, and the zooxanthellae algae they contain, form the base of a coral reef ecosystem. Organisms like sea urchins feed on microorganisms that grow on the corals. Organisms including seahorses feed on plankton and fish that also inhabit the reef. Larger animals like sea turtles frequently enter the reef to forage. Seaweeds, which are competitors of corals, may grow along the reef bottom.

The biodiversity in a coral reef ecosystem can be changed by both natural and human activities. What is a natural factor that would have the greatest negative impact on the ecosystem's biodiversity?

• A sudden increase in the harvesting of corals, which decreases the coral population in the reef.

• The immigration of several new populations of sea urchins into the reef.

• The overgrowth of a population of seaweed, which prevents light from reaching the reef.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A sea otter's preferred meal consists of sea urchins. Without the otters the urchins population would increase causing overgrazed kelp forests and could harm other animals. When sea urchins would no longer have a predator, causing an over consumption of kelp to take place. Otter's are a species that influences the survival of many other species in an ecosystem. What type of species are otters?

• predators

• keystone

• endangered

• prey

Tags

NGSS.MS-LS2-4

Any thing or organism that regulates the size of a population is known as

• carrying capacity

• biodiversity

• a limiting factor

• a food web

Tags

NGSS.MS-LS2-4

For the graph below, what is the carrying capacity of Species 5?

• 2000 organisms

• 2050

• 20500

• day 2

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Oxpeckers, a type of bird, land on rhinos or zebras and eat ticks and other parasites that live on their skin. The oxpeckers get food and the zebras get pest control. Also, when there is danger, the oxpeckers fly upward and scream a warning, which helps the zebra.

• competition

• commensalism

• parasitism

• mutualism

Tags

NGSS.MS-LS2-2

During respiration, _____ is consumed and _____ is released.

• oxygen, nitrogen

• oxygen, carbon dioxide

• carbon dioxide, oxygen

• nitrogen, carbon dioxide

Tags

NGSS.MS-LS2-3

All the carbon that exists is continually recycled in the carbon cycle.

• True

• False

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS2-3

Almost all living things contain carbon.

• True

• False

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3