Download symbiosis - Model High School

SYMBIOSIS
Living things live
together in
relationships called
symbiosis.
SYMBIOSIS
 There are three types of symbiotic relationships.
At least one organism will benefit in all types of
symbiosis
1. Parasitism
2.Mutualism
3.Commensalism
Competition
• When two species compete, their
niches overlap
• intraspecific -within the same
species
• interspecific between different
species
Predator or Prey?
 Predation – act of one
organism eating
another organism
• Predator – organism
that does the eating
• Prey – organism that
gets eaten
4
Most Consumer Species Feed on Live
Organisms of Other Species
 Predators may capture prey by:
• Walking
• Swimming
• Flying
• Pursuit and ambush
• Camouflage
• Chemical warfare
Most Consumer Species Feed on Live
Organisms of Other Species
 Prey may avoid
capture by
• Camouflage
• Chemical warfare
• Warning coloration
• Mimicry
• Deceptive looks
• Deceptive behavior
Parasitism
Organism One
Organism Two
Parasitism
 one organism benefits and the other is harmed.
 organism that benefits is called the parasite
 the organism that is harmed is called the host.
 It is different from a predator, because it
usually does not kill the organism it feeds
on.
 Examples: Fleas, leeches, worms, mites
Parasitism
Mutualism
 A relationship in which both species benefit.
 As you sit in this classroom,You are also participating in
mutualism…
Mutualism
Organism One
Organism Two
Mutualism
 At this very moment, you are in a mutualistic
relationship with a population of bacteria in your large
intestine. Escherichia coli lives in most mammals to break
down food that mammals cannot digest. Bacteria gets
food and a place to live and we benefit as well!
Mutualism
Commensalism
 A relationship in which one species benefits and
the other species is neither harmed or helped.
 Example: Elf owl creating small hole for nest in
the cactus.
Commensalism
Organism One
Organism Two
Commensalism
Symbiosis
 Your Turn!!!!
Identify the following images
as Parasitism, Mutualism,
Commensalism relationships.
Shark and Remora- Shark provides
transportation, while remora feeds on shark
and kills parasites.
Moth lays eggs and pollinates flower
Mistletoe grows from tree, affecting
growth of the tree itself, and
possibly damaging the roots.
Clown Fish cleans parasites from
anemone; anemone provides
protection for clown fish.
Bee Hive in Tree
Termites in tree
Tape Worm!!!!!