Unit 6 Flashcards
(56 cards)
What the difference between a food chain and a food web?
10% rule of energy transfer
A diagram that shows the transfer of energy from one trophic level to the next
Energy Pyramid
Whats the difference between the flow of energy and movement of matter in an ecosystem?
In an ecosystem, nutrients move in cycles, whereas energy is a one-way flow (sun to producers to consumers and is lost to the ecosystem mostly as heat)
An organism that chemically breaks down wastes and dead organisms; nature’s recylcers!
Decomposer (bacteria and fungi are important decomposers)
An organism that can make make its own food
Producer (autotroph)
An organism that consumes other organisms
Consumer (heterotroph)
List different types of consumers (7)
Omnivore, Herbivore, Carnivore, scavenger, detritivore, insectivore, fungivore
Difference between scavenger and decomposer
both consume dead/decaying matter, but only the decomposers chemically break it down into elements/molecules and return nutrients to the ecosystem; scavengers start the process and decomposers end it!
Which trophic level uses the nutrients after the decomposers make them available
Producers
What is the difference between a primary and secondary consumer?
primary consumers are herbivores and the FIRST consumer in a food web/chain; whereas secondary consumers feed on primary consumers
Whats the top predator in an ecosystem?
Apex predator
A small scavenger that feeds on detritus(dead organic matter and wastes like dead plants.)
ex: fiddler crabs
Detritivore
How much energy is transferred from one trophic level to the next
10% Percent
What are biochemical cycles?
they cycling of nutrients between living organisms and the physical environment, examples: water cycle, carbon cycle, nitrogen cycle, phosphorus cycles
Transpiration, condensation, evaporation, precipitation
Water Cycle
Whats transpiration?
Evaporation of water from the leaves of a plant
Which two cellular processes drive the carbon cycle?
(Biochemical cycle)
Photosynthesis and Cellular Respiration
What type of organism is responsible for converting atmospheric nitrogen into usable forms
(biochemical cycle)
BACTERIA
Why is it critical that phosphorus is recycled in the ecosystem?
Phosphorus is found in DNA, RNA, and ATP and is part of the phospholipid cell membrane
Examples of density independent factors:
Storms, Changes in pH (acidity), Droughts, Fire, etc.
Two or more organisms using a limited supply of a resource; for example, food, water, light, space, mates, nesting sites. It may be intraspecific or interspecific
Competition
A curve that depicts logistic growth; shape of an “s”
S-curve
S curve
A growth that depicts logistic growth; shape of an “s”
How does cellular respiration and photosynthesis relate to the carbon cycle?
- CO2 is a reactant of photosynthesis
- C6 H12 O6 (glucose) is a product of photosynthesis
______________________________________________________ - CO2 is a product of cellular respiration
-C6 H12 O6 is a reactant of cellular respiration
