Ecosystem

Choose the phrase that correctly finishes this statement: "A species is..." A. A specific part of the abiotic environment B. A way of describing all the living parts of an ecosystem C. A group of organisms that can successfully mate with each other and reproduce D. Part of the natural decomposing materials in soil

C.

When populations share their environment and interact with populations of other species, it is called a A. Biome B. Ecoprovince C. Community D. Species E. Ecotone

C.

Which of the following is NOT an abiotic factor? A. Decomposer B. Light intensity C. Wind D. Humidity E. Temperature

C.

A consumer is A. An organism that produces its own food B. An organism that does not need food to survive C. An abiotic organism D. An organism that cannot produce its own food

D.

Ecology is the study of the A. Abiotic parts of the environment, such as climate, air, and soil B. Biotic parts of the environment, such as animals and plants C. Interactions between organisms D. Interactions between organisms as well as the interactions between organisms and their environment

D.

Heterotrophs obtain energy from all of the following except: A. Autotrophs B. Herbivores C. Solar radiation D. Other heterotrophs

D.

If a fire burned part of a forest ecosystem, which of these would probably happen? A. All of the animals would die. B. All of the plants and seeds would be destroyed forever. C. A flood would bring new rich soil. D. The animals would move to a nearby part of the ecosystem.

D.

An organism that creates its own food is called A. A producer B. A consumer C. A scavenger D. A decomposer E. A carnivore

A.

What are the three factors a niche includes? A. Food, competition, energy pyramid B. Habitat, ecology, food C. Habitat, food chain, oxygen cycle D. Food, Nonliving conditions, behavior E. None of the above is true

A.

Which of the following two organisms are producers? A. Plants and phytoplankton B. Plants and consumers C. Consumers and phytoplankton D. Phytoplankton and chlorophyll E. Phytoplankton and herbivores

A.

Temperature, light, air, water, soil, and climate are all __________ parts of the environment. A. Biotic B. Abiotic C. Boreal D. Living

B.

What is a population?

a set of individuals of the same species found in a given place at a given time.

What is a species?

a set of living organisms able to cross-breed among themselves to generate fertile offspring.

What is a niche?

a set of particular activities, resources and strategies that a species explores to survive and reproduce.

What is an ecosystem?

a system composed of interacting biotic and abiotic factors.

A chain of energy that is passed from one organism to another is called

food chain

An animal that lives by eating other animals is called a

predator

What is a community?

set of populations of living organisms that live in the same region and interact with each other.

What are biotic factors?

the living organisms (plants, animals and microorganisms) that are part of a given environment.

What are abiotic factors?

the nonliving elements that compose a given environment, such as light, temperature, minerals, water, gases, atmospheric pressure, etc.

What is a habitat?

the place where the species lives to explore its ecological niche.

What is a biosphere?

the set of all of the ecosystems on the planet.

What are autotrophic organisms?

those that can produce their own food, or rather, that produce organic material from inorganic compounds.

What are heterotrophic organisms?

those that need to ingest organic material to nourish themselves. Therefore, heterotrophs depend on the production of the autotrophs.