EOC Review Ecology

What is the role of decomposers within an ecosystem?

• Decomposers make water and sugars available to plants.

• Decomposers break down organic material to return nutrients back into the ecosystem.

• Decomposers are not needed within an ecosystems.

• Decomposers are important in the recycling of nutrients in the biogeochemical cycles.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

The ____________ is the portion of the Earth which contains all life.

• Ecosystem

• Population

• Community

• Biosphere

Which of the following represents a POPULATION?

• One single alligator.

• A group of alligators. 

• Alligators, fishes, grasses, mushrooms, and bacteria.

• Alligators, fishes, mushrooms, bacteria, rocks, water, soil, and sunlight.

True or False: A biological community consists of only the BIOTIC factors in an area.

• True

• False

Tags

NGSS.MS-LS2-3

Which of the following make up an ECOSYSTEM?

• A group of snakes.

• Snakes, lizards, and cacti.

• Snakes, lizards, cacti, sand, sunlight, rocks, and temperature (heat).

• Sand, sunlight, rocks, and temperature (heat).

Tags

NGSS.MS-LS2-3

What are the major categories used to classify biomes?

• Annual precipitation, adaptations and sunlight.

• Sunlight, annual precipitation, and animals.

• Latitude, longitude, annual temperature, and annual precipitation.

• Annual temperature, annual precipitation, plants and animals.

True or False: A niche is a role or position of an organism has in its environment.

• True

• False

What is a limiting factor?

• Any biotic or abiotic factor that restricts the size of a population.

• The maximum number of a population an ecosystem can hold.

• A geologic event which controls living space.

• The role an organism plays in its environment.

Tags

NGSS.MS-LS2-4

Which of the following would be an example of a DENSITY DEPENDENT limiting factor?

• Disease

• Flood

• Fire

• Volcanic Eruption

Tags

NGSS.MS-LS2-4

A density ____________ factor limits the size of a population, no matter the size of a population.

• Independent

• Dependent

• Capacity

• Primary