Relationships
Key Terms
Trophic levels
Types of feeding
Food Chains/Webs
100

Where one organism benefits but while the other is damaged. 

Ex. : copepods and marine fish

        ectoparasite or endoparasite 

What is Parasitism?

100

A diagram which shows the biomass, energy, or number of organisms in each trophic level. 

What is a Pyramid?

100

Quaternary Consumers

Ex. : shark

What is the Fifth Trophic Level?

100

Form organic compounds from simple inorganic molecules. 

What is Autotrophic?

100

Shows all the interrelated relationships within a ecosystem. 

What is a Food Web?

200

Where both organisms benefit from the relationship. 

Ex. : boxer crabs and anemones

What is Mutualism?

200

Feeds on other animals and producers. 

What is an Omnivore?

200

Primary Consumers

Ex. : zooplankton 

What is the Second Trophic Level?

200


🌟 DAILY DOUBLE 🌟


Obtain their energy by feeing on autotrophs. 

What is Heterotrophic?

200
An organism at the end of the food chain with no natural predators. 

What is an Apex Predator?

300

Where one organism benefits but the other remains unaffected.

Ex. : manta rays and remora fish

What is Commensalism?

300

Rate of production of new biomass per unit area. 

What is Primary Productivity?

300

Secondary Consumers 

Ex. : crustaceans 

What is the Third Trophic Level?

300

Uses light energy to synthesize organic compounds. 

What is a Photoautotroph? 

300

Linear relationship beginning with producers and ending with predators. 

producer > primary consumer > secondary consumer › tertiary consumer > quaternary consumer

What is a Food Chain?

400

Crucial for keeping a healthy balance of populations within and ecosystem.

Ex. : starfish and mussels

What is Predator - Prey?

400


🌟 DAILY DOUBLE 🌟 


When a body of water becomes enriched in dissolved nutrients, usually resulting in the depletion of dissolved oxygen. 

What is Eutrophication?

400

Primary Producers 

Ex. : phytoplankton 


What is the First Trophic Level? 

400

Use the energy in chemicals that are dissolved in the water. 

What is Chemosynthetic? 

400


🌟 DAILY DOUBLE 🌟


The feeding level in a food chain. 

What is a Trophic Level?

500

Between two or more organisms from physically close, different species. 

What is Symbiosis? 

500

Rate if production of new biomass. 

What is Primary Productivity?

500

Tertiary Consumers

Ex. : Squid 

What is the Fourth Trophic Level?

500

Break down dead organic matter and release nutrients back into the environment. 

What are Decomposers?

500

Mass of living material in an area(dry or wet).

What is Biomass?

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