answer all
Question 1 (1 point)
Which component of a marine ecosystem is abiotic?
a
shark
b
dolphin
c
algae
d
water
Question 2 (1 point)
Which is an example of a producer?
a
mouse
b
deer
c
rose bush
d
bear
Question 3 (1 point)
Some types of algae can grow together with fungi. The fungi provide nutrients from decaying matter to the algae, while the energy the algae get from sunlight is shared with the fungi. Based on this information, how would you describe this relationship?
a
The fungus is a parasite, and the algae is the host.
b
The two organisms are in a mutualistic relationship.
c
The algae is the predator, and the fungus is the prey.
d
The two organisms are in competition.
Question 4 (1 point)
Jumping worms affect populations in forest ecosystems by directly competing with native
a
primary consumers.
b
secondary consumers.
c
decomposers.
d
producers.
Question 5 (1 point)
What might allow an invasive species to outcompete a native species?
a
They use the same shelter or space.
b
They have no predators, so they can spread rapidly.
c
They are introduced by humans at high rates.
d
They eat the same food resources.
Question 6 (1 point)
When considering competition between individuals of the same species, what allows some individuals to survive over others?
a
Some are better adapted.
b
Some choose not to compete for resources.
c
Some do not need resources.
d
Some are not impacted by rapid changes.
Question 7 (1 point)
How do high temperatures affect corals?
a
corals become more susceptible to disease
b
corals become more colorful
c
corals erode
d
corals collect more zooxanthellae
Question 8 (1 point)
Fleas and dogs have a parasite/host relationship. What happens to the fleas in a home when another dog is brought into the home?
a
The flea population increases because the relationship is mutually beneficial.
b
The flea population decreases because the fleas harm the dogs they live on.
c
The flea population decreases because fleas are not able to live on all dogs.
d
The flea population increases because there are more dogs to live on.
Question 9 (1 point)
What happens to an ecosystem when the primary consumers disappear?
a
Both the producer and secondary consumer populations increase
b
Both the producer and secondary consumer populations decrease.
c
The producer population decreases, while the secondary consumer population increases.
d
The producer population increases, while the secondary consumer population decreases.
Question 10 (1 point)
Which pair of organisms can be in a parasite/host relationship?
a
bees and flowers
b
goats and grasses
c
dogs and fleas
d
snakes and mice
Question 11 (1 point)
A rat is trying to get food from a garbage can but is chased away by a crow. The crow eats the food, and the rat must find other food. Based on this information, what is the relationship between the crow and the rat?
a
The relationship is mutualistic.
b
The relationship is predator-prey.
c
The relationship is competitive.
d
The relationship is parasitic.
Question 12 (1 point)
Two prides of lions compete with one another for the same prey (antelope). Which scenario would cause a decrease in competition?
a
A disease kills individuals from the lion population.
b
Wildfire kills many antelope and some lions.
c
An invasive species outcompetes and replaces antelope.
d
Drought reduces the water available for all species.
Question 13 (1 point)
The cones of lodgepole pine trees release their seeds when exposed to heat. Which abiotic event may benefit this plant?
a
flood
b
drought
c
tornado
d
fire
Question 14 (1 point)
Which statement describes a consumer/producer relationship?
a
One organism eats another organism that makes its own food.
b
One organism that benefits from living in or on another organism at the expense of that organism.
c
Both organisms benefit from each other
d
One organism catches and consumes another organism
Question 15 (1 point)
Polar bears hunt for ringed seals by waiting for them to emerge from breathing holes in the ice. Which abiotic change may decrease a polar bear’s ability to hunt?
a
increased temperatures
b
increased seal population
c
increased ice cover
d
increased competition
Question 16 (1 point)
How could wildfire immediately impact competition in a forest ecosystem?
a
Competition would increase. Wildfires would increase the scarcity of resources, causing individuals to compete at higher rates.
b
Competition would decrease. Wildfires would decrease the number of individuals competing for resources, making more resources available per individual.
c
Competition would remain the same. Wildfires would increase the scarcity of resources and decrease individuals competing, effectively balancing each other out.
d
Competition would decrease. Many ecosystems rely on wildfire to restore nutrients and germinate seeds; therefore, wildfire would increase resources available, lowering competition.
Question 17 (1 point)
Leaf-cutter ants cultivate fungus. The ants keep conditions optimal for fungus growth and carry leaf fragments for the fungus to grow on. Then the ants feed on pieces of the fungus. Which kind of relationship exists between the fungus and the ants?
a
consumer/producer
b
symbiotic
c
parasite/host
d
predator/prey
Question 18 (1 point)
Which activity might reduce habitat loss?
a
removing invasive species
b
draining a wetland to plant fruit trees
c
spreading out the human population
d
replacing golf courses with farms
Question 19 (1 point)
A hawk eats a mouse. This kills the mouse, but it also means that the remaining mice will not have to compete as much for food with each other. Based on this information, what is the relationship between the hawk and the mouse?
a
The two organisms are in a parasitic relationship.
b
The two organisms are in a predator-prey relationship.
c
The two organisms are in a mutualistic relationship.
d
The two organisms are in a competitive relationship.
Question 20 (1 point)
In order to explain how changes to physical components of an ecosystem affect populations, you must use data from observations and investigations. These data are also known as
a
a statement.
b
reasons.
c
evidence.
d
an argument.
1 - d
2 - c
3 - b
4 - c
5 - c
6 - a
7 - a
8 - a
9 - b
10 - c
11 - b
12 - a
13 - d
14 - a
15 - a
16 - a
17 - b
18 - c
19 - b
20 - c