Relationships (Part 1)
An animal that hunts and kills another organism for food.
Predator
A spider spins a web to catch insects.
Predation
All of the living things in an ecosystem
Biotic
An organism that relies on plants or other animal for energy
Consumers
A dog starts drooling when it is shown a treat.
Stimuli
An animal that is hunted or killed by another animal for food.
Prey
A tapeworm latches on to the walls of the small intestine, and steals nutrients from a mammal’s digestive tract.
Parasitism
Any nonliving thing in an ecosystem
Abiotic
Organisms that break down dead material and return nutrients to the soil are called...
Decomposers
Urine is an example.
Excrete
On your white board use symbols to show mutualism.
( + +) or 😀 😀
Yucca flowers are pollinated by yucca moths. The moths lay their eggs in the flowers where the larvae hatch and eat some of the developing seeds.
Mutualism
A dead tree
Biotic
This is the largest section of the energy pyramid
Producers
Plants take in carbon dioxide and release oxygen through their leaves.
Respiration
Female cuckoo secretly lay their eggs in the another birds' nests. The other birds will unknowingly feed and take care of the cuckoo chick causing the other chicks to not get as much food and care.
Parasitism
Cattle egrets eat the insects stirred up by cattle when the cattle graze in a field.
Commensalism
A producer needs this abiotic factor to make its own food.
Sunlight
In the salt marsh food web...what eats the crab?
turtle, gull, otter
An average sea turtle will lay about 100 eggs in early summer.
Reproduction
A wolf kills and eats an elk. The wolf pack abandons the carcass and moves on once they have eaten enough. Later, a grizzly bear stops by and eat some of the elk remains as well. What TWO relationships are taking place here?
Commensalism
Two snowy egrets are hunting in the same shallow pool. Both birds are trying to catch the same small fish and shrimp. There is only a limited amount of food in that area.
Competition
A grizzly bear in Yellowstone needs this biotic factor to put on enough fat for the winter.
Berries
In the arctic ocean food web, what does the leopard seal eat?
krill and arctic cod
Hummingbirds flap their wings about 75 times per minute while hovering.