Symbiosis
Biological Levels of Organization
Ecological Levels of Organization
100

interaction between two different organisms living in close physical association, typically to the advantage of both

What is Symbiosis?

100

The smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane. Microscopic organisms typically consist of a single cell, which is either eukaryotic or prokaryotic.

What is a Cell

100

a group of individuals of the same species living in the same geographic area and capable of interbreeding

What is a Population

200

a type of symbiotic relationship between two different species where both organisms benefit from the interaction

What is Mutualism

200

any of the distinct types of material of which animals or plants are made, consisting of specialized cells and their products.

What is a Tissue

200

all the populations of different species that live and interact within a shared habitat or geographic area

What is a Community

300

a type of symbiotic relationship where one organism, the parasite, benefits at the expense of another organism, the host, which suffers harm from the interaction

What is Parasitism

300

a part of an organism that is typically self-contained and has a specific vital function, such as the heart or liver in humans.

What is an Organ

300

a community of living organisms (biotic factors) and their non-living physical environment (abiotic factors) functioning together as a unit

What is an Ecosystem

400

a type of symbiotic relationship where one organism (the commensal) benefits from the interaction, while the other organism (the host) neither benefits nor is harmed

What is Commensalism

400

a group of organs that work together to perform a specific function or set of functions in the body.

What is an Organ System

400

a large geographic region defined by its distinct climate, dominant plant life, and the animal species adapted to those conditions

What is a Biome

500

an individual animal, plant, or single-celled life form.

What is an Organism

500

the sum of all Earth's ecosystems – the region of the planet where life exists, encompassing the land, water, and air that supports all living organisms

What is the Biosphere