Life
How does energy from the sun enter an ecosystem?
When a plant uses sunlight to make sugar molecules through photosynthesis
Where would you find hydrogen sulfide?
In the hot water that escapes from cracks in the ocean floor
Consumer that breaks down dead organisms are called _____________. Give an example.
decomposers
Example: bacteria, fungi
Define food chain
a sequence in which energy is transferred from one organism to the next as each organism eats another organism
Which level gains 100% energy from the sun?
primary producers
Sugar molecules are known as ____________
Carbohydrates
What uses hydrogen sulfide to make food without sunlight?
Bacteria that lives in the organisms at the bottom of the ocean
What is the consumer that feeds on dead organisms?
detritivore
What shows many feeding relationships that are possible in an ecosystem?
food web
Who is the first level in the food chain? Give example.
primary producer
Ex: plant
Name 3 things that organisms use carbohydrates for...
move, grow and reproduce
Consumers that eat only producers are called __________________ or __________________. Give an example.
herbivores or plant eaters
Ex: rabbits, cows, sheep, deer, grasshoppers
Define cellular respiration
The process of breaking down food to yield energy
Each step in the transfer of energy through a food chain or food web in an ecosystem is known as _______________
a trophic level
What is the second level up on the food chain? Give example.
primary consumer
Ex: rabbit
Define producer
an organism that makes its own food
Consumers that eat only other consumers are called ________________ or __________________. Give an example.
carnivores or meat eaters
Ex: lion
What occurs each time one organism eats another organism?
a transfer of energy occurs
Which trophic level contains the most energy?
Producers
What is the 3rd level up on the food chain? Give example.
secondary consumer
Ex: snake
Define consumer
organisms that get their energy by eating other organisms
Consumers of both plant and animals are called ______________. Give an example.
omnivores
Ex: humans
Name three different ways that can tell us how energy is transferred as well as how much energy is transferred between organisms in an ecosystem.
food chains, food webs and trophic levels
What is lost at each trophic level where there are fewer organisms at the higher trophic level?
energy
What is the 4th level up on the food chain? Give example.
tertiary consumer
Ex: hawk