WorksheetsEcology Quiz Review
Total questions: 17
Worksheet time: 12mins
According to the graph, which of the following is true? (choose 2 answers)
(pH is the measurement of acidity)
As soil pH increases, the population of marigolds and annual flowers decreases
As soil pH increases, the pansies population increases
As soil pH increases, the pansies population decreases
As soil pH increases, the population of marigolds and annual flowers increases
In arid or desert areas where rainfall is slim and places where there are dense forests, soil tends to be more alkaline (basic with a pH higher than 7). For example, marigold flowers, and other annual flowers, have adapted to flourish and thrive in alkaline soil (low pH). However, flowers such as pansies prefer acidic soil (high pH). The graph below shows how the different populations are affected by the pH of soil.
Which of the following answers can be considered correct based off of the graph?
As the pH increases, the soil becomes very acidic which kills all flowers that might grow in the area.
As the pH decreases, the roots that anchor the flowers become less stable due to the dryness of the desert-like area.
As the pH increases, the flowers that thrives in acidic (high pH) conditions begins to increase.
As the pH increases, the decomposing remains of flowers decrease due to them being covered up.
Pyroclastic rocks are the product of explosive volcanism. When primary succession occurs on pyroclastic rocks, which life-forms will help create the soil by breaking down bare rock?
Worms
Annual flowers
Grass
Lichen
Which of the following is true regarding the biodiversity/species diversity between primary and secondary succession?
Biodiversity/species diversity is greater in primary succession due to the fact that the pioneer species ability to become specialized.
There is no difference between the successions in regard to biodiversity/species diversity.
Biodiversity/species diversity is greater in secondary succession due to the fact that the soil already contains traces of decomposed organisms and various seeds.
Biodiversity/species diversity is greater in primary succession due to the process taking longer.
A new island is formed after a volcano erupts.
What is the order that things would grow?
Lichen, Grass, Shrub, Tree
Tree, grass, moss
Shrub, grass, moss, tree
Lichen, Shrub, Moss, Tree
Protected ecosystems maintain their ecosystems by not permitting a variety of species populations to be introduced which increases the ecosystem's biodiversity.
Humans can prevent invasive species from entering a certain ecosystem by announcing that ecosystem as a protected ecosystem.
False
True
What is the main difference between primary and secondary ecological succession?
Primary builds plant community; secondary builds animal community
Primary begins WITH soil; Secondary begins WITHOUT soil
Primary is the first state and secondary is the second stage
Primary begins WITHOUT soil; Secondary begins WITH soil
What is the term that describes a steady and stable community?
Disturbed community
Peak community
Climax community
Primary community
Cattle egrets forage (feed) in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle don't care if they are there or not.
Parasitism
Mutualism
Competition
Commensalism
If one organism is mentioned to benefit from another; meanwhile, the other organism involved is not mentioned to benefit or be harmed, then that relatioship is...
Parasitism
Mutualism
Commensalism
Competition
Nitrogen fixing bacteria converts nitrogen gas into a usable form for plants. The bacteria multiply and thrive at the roots of the plants, and the plants are able to form proteins from the nitrogen provided by the bacteria.
What type of symbiotic relationship exists in the example above?
competition
mutualism
commensalism
parasitism
A giraffe has a long neck.
Why would the giraffe need this adaptation?
to keep warm
to catch birds
to reach food high above the ground
to have room to eat more
As time passes, and the trees become taller as the ecosystem attains the status of a climax community, what are the tree competing for at this stage?
water
CO2 (carbon dioxide)
sunlight
soil
Which best describes how a porcupine defends itself from predators?
it moves rapidly
it has sharp quills (spikes)
it changes color
it makes a loud sound
A leech on a mammal would be an example of which symbiotic relationship?
mutualism
commensalism
predation
parasitism
Two organisms, A and B, live within the same ecosystem. However, organism B is found in greater amounts than A.
Which of the following could be true?
There are predators that eat both organisms at an equal rate
Both organisms eat the same food
Organism A is immune to pathogens (harmful microorganisms)
Organism B does not have any predators
The wrasse, a small marine fish, periodically cleans harmful parasites from the mouth and body of the moray eel. The moray, in turn, protects the wrasse from larger predators and provides it with a constant supply of food.
This is an example of the type of relationship known as
commensalism
mutualism
competition
parasitism
