competition, predation and symbiosis. bellringer name a biotic factor in a forest. name two limiting...
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BellringerName a biotic factor in a forest.
Name two limiting factors for a population of lions.
What is carrying capacity?
A mouse eats acorns what is a mouse called in the food web? (Producer, Consumer, Decomposer)
CompetitionThere are three major types of
interactions among organisms:1. Competition2. Predation 3. Symbiosis
What are three major types of interactions among organisms?
CompetitionDifferent species can share the
same habitat and food requirements.
Competition is the struggle between organisms to survive as they attempt to use the same limited resource.
In any ecosystem, there is a limited amount of food, water and shelter.
Organisms that survive have adaptations that enable them to reduce competition.
What is competition?
What do organisms have to do in order to reduce competition?
An adaptation is a change that helps an organism, such as a plant or animal, survive in its environment.
PredationPredation is an interaction in
which one organism kills another for food.
The organism that does the killing for food is the predator.
The organisms that is killed for food is the prey.
What is predation?
What is the relationship between predator and prey?
Bellringer1. What is the difference between a food chain
and a food web?
2. Name three adaption that prey use to protect themselves against predators.
3. Who are nature’s recyclers?
SymbiosisSymbiosis – is a close
relationship between two species that benefits at least one of the species.
There are three types of symbiotic relationships:1. Mutualism2. Commensalism3. Parasitism
What is symbiosis?
What are the three types of symbiotic relationships?
Mutualism Mutualism – A relationship in which both species benefit.
Example:The relationship between the
Saguaro Cactus and Long Eared Bats. Cactus flowers provide bats with
food The cactus benefits because the
bats carry pollen from cactus to cactus on their noses.
What is Mutualism?
Mutualism A relationship in which both organisms benefit. They help each other.
Ex. A relationship between a butterfly and a flower
Clownfish and Sea Anemone
Butterfly and Flower
CommensalismCommensalism – Is a
relationship in which one species benefits and the other species is neither helped nor harmed.
Example – The red-tailed hawks’
interaction with the saguaro cactus . The hawks benefit by having a
place to build their nests. The cactus is not affected by the
hawks.
What is commensalism?
Commensalism
The Remora fish attaches to the shark and gets a free ride.
Birds build nests in trees.
CommensalismCommensalism is not very
common in nature because species are usually either helped or harmed a little by any interaction.
ParasitismParasitism – a relationship
when one organism is helped and the other is harmed.
The organism that benefits is called a parasite.
The organism that the parasite lives on or in is known as the host.
What is parasitism? What does a parasitic relationship consist of?
Parasitism
Wasp eggs on back of caterpillar.
Mosquito biting a human.
Sea lampreys feed on fluids of other
fish.
ParasitismCommon parasites are fleas,
ticks and leeches.These parasites have
adaptation that enable them to attach to their host and feed on their blood.
Other parasites live inside the host’s body such as tapeworms, that live inside the digestive systems of dogs, wolves, and some other mammals.