grade 9 science – unit 3 – biology – ecology ecologycarbon cycleenergy in ecosystems...

Grade 9 Science – Unit 3 – Biology – Ecology

Ecology Carbon Cycle Energy in Ecosystems

Definitions More Ecology

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Herbivore

What is an organism that eats only

plants?

A step-by-step sequence linking organisms that feed

on each other

What is a Food Chain?

Non-living factors in the ecosystem such as

temperature and wind direction.

What is abiotic?

An organism that eats both plants and meat.

What is omnivore?

The study of how organisms interact with each other and their physical environment.

What is Ecology?

CO2, H2O and N2O

What are Inorganic Substances?

The largest reservoir of carbon near

the surface of the Earth.

What is the ocean?

During photosynthesis, this gas is produced.

What is Oxygen?

These substances always contain atoms of carbon AND hydrogen, and often, oxygen

and nitrogen.

What are Organic Substances?

During this process, green plants absorb CO2 from the atmosphere and

use it to manufacture plant fibres, starches and sugars

What is photosynthesis?

It is the source of all energy in Earth’s ecosystems.

What is the Sun?

This “rule” states only 10% of the energy in one trophic level will be passed to the

next trophic level.

What is the Rule of Ten?

It is the diagram that shows the movement of energy through trophic levels.

What is a Pyramid of Energy?

The term describing more and more contaminants at the top of

a food chain (i.e., the concentration may be little at the

bottom of the chain but increases as you move up the chain so there is a high...and

lethal...concentration at the top).

What is Biomagnify?

The place or area where an organism lives

What is Habitat?

An organism that CANNOT makes its own food

What is a Heterotroph or Consumer?

An organism that makes its own food

What is an Autotroph or a Producer?

Many different organisms as a measure of a healthy

ecosystem.

What is Diversity?

A resource that can be used continuously without being

completely depleted because it regenerates itself

What is a Renewable Resource?

It is the number of organisms an area can

sustain indefinitely

What is Carrying Capacity?

Autotrophs or Producers (e.g., plants).

What is an organism that can make its own energy?

A combination of many food chains

What is a Food Web?

An animal that eats meat.

What is a Carnivore?

An organism that feeds on the dead body of other organisms and, in the

process, releases nutrients to the soil and water

What is a Decomposer?

A factor in an ecosystem created by the presence and roles of living things

What is Biotic Factor?