WorksheetsEcology - Relationships
Total questions: 16
Worksheet time: 9mins
Name
Class
Date
1.
The Cattle Egret is often seen in the company of grazing animals. The grazers stir up insects, which the egret then eats.
a)
Mutualism
b)
Commensalism
c)
Predation
d)
Parasitism
2.
The oxpecker is a bird that rides around on the backs of cattle and other large animals such as rhinos. The oxpecker feeds on ectoparasites of the cattle, such as ticks, and warns the animals of approaching predators.
a)
Mutualism
b)
Commensalism
c)
Predation
d)
Parasitism
3.
Corals and zooxanthellae (zooxanthellae are algae that take up residence in a coral animal. The photosynthetic zooxanthellae provide the coral with sugars in return for nitrogen and other nutrients from the coral.
a)
Mutualism
b)
Commensalism
c)
Predation
d)
Parasitism
4.
The horsehair worm starts life as an egg laid in a puddle. The puddle dries out and a grasshopper comes along and eats the egg, which promptly hatches and burrows through the gut of the insect into its body cavity. Here, the insect grows until it reaches adulthood. At that point it starts producing chemicals which take over the brain of the insect and cause the insect to seek out water, which it jumps into. The worm then exits the hopper and lives in the puddle, mating and laying more eggs. The grasshopper, if it doesn't drown, may survive the ordeal.
a)
Mutualism
b)
Commensalism
c)
Predation
d)
Parasitism
5.
Herbivores are plant eaters.
a)
True
b)
False
6.
Omnivores eat plants and animals.
a)
True
b)
False
7.
Producers get their energy from
a)
food.
b)
other plants.
c)
the Sun.
8.
Carrying Capacity is
a)
the capacity of what one person can carry per day
b)
how many animals you have in your daily bag limit at the end of the year
c)
wildebeest at a watering hole with zebras
d)
the maximum number of individuals that the environment can support
9.
Biotic or abiotic things that control the size of a population
a)
Limiting factor
b)
density- dependent factor
c)
density- independent factot
d)
tolerance
10.
One factor that drives population changes is
a)
the availability of resources.
b)
predation.
c)
both a and b.
d)
none of the above.
11.
What type of growth model is this?
a)
exponential growth model
b)
logistic growth model
c)
Type I curve
d)
Type III curve
12.
If the death rate of a population is greater than the birthrate, the population shrinks.
a)
True
b)
False
13.
A small fish called the Pilot Fish follows underneath a shark and when the shark eats something the pilot fish eats the scrap pieces of the shark's original kill. This is an example of
a)
mutulaism
b)
parasitism
c)
commensalism
d)
predator-prey
14.
What might occur when a carnivore is removed from the food web?
a)
A) Nothing. Organisms cannot impact things below them on the energy pyramid.
b)
B) Primary consumers will overpopulate.
c)
C) Plants will be over browsed by herbivores.
d)
D) both B and C might occur.
15.
relationship in which two species live closely together
a)
resource
b)
mutualism
c)
succession
d)
symbiosis
16.
What percentage of energy is passed on to each tropic level?
a)
10%
b)
50%
c)
90%
d)
100%
100 %
