Download (C) commensalism

1. competition:
 when 2 organisms compete for the same resource
i.e. water, food, shelter, territory, a mate, etc.
2. Predator – prey: (predation)
 when 1 organism (the predator) hunts and kills
another (the prey) for food
 creates population cycles
i.e. deer - wolf
3. symbiosis:
 when 2 organisms of different
species live in or on each other
3 types:
a) commensalism:
when 1 organism benefits, but the other is
unharmed
i.e. vines grow on trees to get light
bird makes nest in tree
3. symbiosis:
 when 2 organisms of different species live in or
on each other
3 types:
b) mutualism:
both organisms benefit
i.e. pilot fish guide sharks & eat scraps from
shark’s meal
bird clean’s hippo’s teeth
3. symbiosis:
 when 2 organisms of different species live in or
on each other
3 types:
bird with ticks
c) parasitism:
when 1 organisms benefits while the other (the
host) is harmed
i.e. strep throat: bacteria feed off throat cells
lice feed off of host
predation
mutualism
commensalism
parasitism
competition
Identify the species
interactions for each slide.
Recall:
1. competition
2. predation
3. symbiosis
a. mutualism
b. commensalism
c. parasitism
1. competition
2. predation
3. symbiosis
a. mutualism
b. commensalism
c. parasitism
1. competition
2. predation
3. symbiosis
a. mutualism
b. commensalism
c. parasitism
head lice
1. competition
2. predation
3. symbiosis
a. mutualism
b. commensalism
c. parasitism
malaria protozoa in blood
1. competition
2. predation
3. symbiosis
a. mutualism
b. commensalism
c. parasitism
1. competition
2. predation
3. symbiosis
a. mutualism
b. commensalism
c. parasitism
1. competition
2. predation
3. symbiosis
a. mutualism
b. commensalism
c. parasitism
1. competition
2. predation
3. symbiosis
a. mutualism
b. commensalism
c. parasitism
leech
1. competition
2. predation
3. symbiosis
a. mutualism
b. commensalism
c. parasitism
1. competition
2. predation
3. symbiosis
a. mutualism
b. commensalism
c. parasitism
1. competition
2. predation
3. symbiosis
a. mutualism
b. commensalism
c. parasitism
1. competition
2. predation
3. symbiosis
a. mutualism
b. commensalism
c. parasitism
1. competition
2. predation
3. symbiosis
a. mutualism
b. commensalism
c. parasitism
1. competition
2. predation
3. symbiosis
a. mutualism
b. commensalism
c. parasitism
1. competition
2. predation
3. symbiosis
a. mutualism
b. commensalism
c. parasitism
1. competition
2. predation
3. symbiosis
a. mutualism
b. commensalism
c. parasitism
1. competition
2. predation
3. symbiosis
a. mutualism
b. commensalism
c. parasitism
1. competition
2. predation
3. symbiosis
a. mutualism
b. commensalism
c. parasitism
Below are descriptions of 8 community relationships.
Identify which one of the following each statement
describes. (A) predation B) parasitism (C) commensalism
(D) mutualism
(E) competition
1. A primitive animal called the Hydra has tentacles with
stinging cells. There is a small organism called Trichodina
that is able to move around the tentacles of the Hydra, yet
not trigger its stinging cells. Trichodina gets food caught
and paralyzed by the Hydra and in turn keeps the surfaces
of the tentacles free of silt.
D. mutualism
2. The giant water bug, found in many ponds, reaches a length
of over 6 cm. These bugs are able to grasp small fish,
frogs, tadpoles and other insects with their powerful
forelegs, paralyze with an injection of poison and suck out
all their body juices. A. predation
Below are descriptions of 8 community relationships.
Identify which one of the following each statement
describes. (A) predation B) parasitism (C) commensalism
(D) mutualism
(E) competition
3. In the fall male moose go through a display ritual in which
stronger and more mature moose threaten and drive the
less hearty moose away from the breeding females.
E. competition
4. Mistletoe plants grow by putting their roots into trees.
The mistletoe plants take water and nutrients from the
tree, which over a long period of time may die. B. parasitism
5. A bird called the Egyptian Plover has the habit of visiting
crocodiles of the Nile River. When the bird is nearby the
crocodile opens its mouth wide while the plover hops
aboard picking out leaches attached to its gums. D. mutualism
Below are descriptions of 8 community relationships.
Identify which one of the following each statement
describes. (A) predation B) parasitism (C) commensalism
(D) mutualism
(E) competition
6. Certain orchids and tropical ferns grow on plants without
harming the plants. The host plants provide the orchids
with a place of support so that they can get sufficient
light and water, while they remain unaffected. C. commensalism
7. If raw fish is eaten it is possible that a small animal called
a fluke will work its way into the body. This small animal
takes nourishment from it, until it reaches the liver and
weakens the host.
B. parasitism
Below are descriptions of 8 community relationships.
Identify which one of the following each statement
describes. (A) predation B) parasitism (C) commensalism
(D) mutualism
(E) competition
8. In Africa, long periods of drought are common to some
areas. When this happens many different types of animals
will come to the same water hole for water. In this way
animals that usually don’t interact like the zebra and the
gnu, find themselves in close proximity. E. competition
Homework
Start ‘Deer – Wolf’ Assignment
for Monday