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WorksheetsSymbiosis, Food Webs, Food Chains
Total questions: 27
Worksheet time: 2hrs 44mins
Name
Class
Date
1.
When two different species attempt to occupy the same niche, one of the species will eventually decline in number due to –
a)
competition for the same resources
b)
mating between the two species
c)
one of the species eating the other
d)
an increase in mutualistic behavior
2.
. In an ecosystem, members of the lizards are observed eating members of the insect population. In this same ecosystem, birds are also observed using insects as a food source. The relationship between lizards and birds would best be described as –
a)
predator
b)
competitive
c)
parasitic
d)
mutualistic
3.
A lichen is composed of two organisms, a fungus and a cyanobacterium. The fungus provides a growing surface, moisture, and nutrients to the cyanobacterium. The cyanobacterium provides food to the fungus. This relationship is considered to be an example of which of the following?
a)
Commensalism
b)
Mutualism
c)
Neutralism
d)
Parasitism
4.
Which of the following sets contains organisms that could be classified as secondary consumers?
a)
Salmon, Marsh Hawk, Bald Eagle
b)
Rat, Herring, Grasshopper
c)
Bald Eagle, Rat, Herring
d)
Snails, Herring, Salmon
5.
The acacia ant nests and feeds in the plant’s hollow thorns. The ant helps protect the bullshorn acacia by attacking insects and grazing animals that come near the plant. The relationship between the acacia ant and the bullshorn acacia is an example of which of the following?
a)
Commensalism
b)
Mutualism
c)
Neutralism
d)
Parasitism
6.
Gobies are a type of small fish that live in small burrows. Sometimes these burrows are created and maintained by burrowing shrimp. The goby shares the burrow with the shrimp and uses it to protect its eggs. The shrimp has poor eyesight, but monitors the behavior of the goby with its antennae. When it feels the shrimp retreat into the burrow away from danger it quickly follows. This relationship demonstrates which of the following?
a)
parasitism
b)
mutualism
c)
commensalism
d)
predation
7.
A native species and a non-native species are competing for resources within the same ecosystem. The non-native species is more likely to survive than the native species in which of the following situations?
a)
Both the native species and the non-native species thrive on the same food source.
b)
The native species is immune to certain pathogens in the ecosystem.
c)
Predators prey on both native and non-native species.
d)
The non-native species has no natural enemies in the ecosystem.
8.
A mutation that occurs in the gametes of an organism will most likely be transferred to which of the following?
a)
The siblings of the organism
b)
The offspring of the organism
c)
The other organisms living nearby
d)
The mating partner of the organism
9.
The graph shows the basic changes in a forest community after a disturbance occurred.
The information shown in the graph suggests that the changes in the forest community were caused by —
The information shown in the graph suggests that the changes in the forest community were caused by —
a)
tree-leaf replacement after a storm
b)
succession after a fire
c)
repeated habitat destruction
d)
decreased species diversity
10.
. In a food web, the population of which organisms would contain the highest amount of biomass?
a)
Hawk
b)
Mice
c)
Corn
d)
Cricket
11.
Which of the following are missing from the food web shown?
a)
Producers
b)
Decomposers
c)
Omnivores
d)
Predators
12.
Some organisms have genes that improve their ability to survive and reproduce. If the genes also help their offspring survive and reproduce, then which of the following will most likely increase?
a)
The frequency of the genes in one individual
b)
The frequency of the genes in the population
c)
The number of genes in one chromosome
d)
The number of genes in the species
13.
The overgrowth of algae poses a major problem for coral reefs. Intensive fishing is one factor that contributes to algae overgrowth because it does which of the following?
a)
Allows more sunlight to be available to algae
b)
Inhibits the spread of pathogens in algae colonies
c)
Reduces the number of organisms that feed on algae
d)
Increases the competition between different algae species
14.
Which population in this food chain is most likely to have the greatest biomass?
a)
Grass
b)
White-tailed deer
c)
Mountain lions
d)
Vultures
15.
. In a food web, the population of which organisms would contain the highest amount of toxins?
a)
Hawk
b)
Corn
c)
Mice
d)
Grasshopper
16.
Remora are small fish with a sucker-like organ that allows them to attach themselves to larger animals like a shark. By doing this, the remora is able to gain protection from the presence of the shark while also traveling long distances more quickly. The remora is light enough to be carried with little effort, and the remora does no damage to shark. This relationship demonstrates which of the following?
a)
parasitism
b)
mutualism
c)
commensalism
d)
predation
17.
The diagram shows a food web. Within the community described by this food web, hawks could be classified as -
a)
primary and secondary consumers
b)
secondary and tertiary consumers
c)
tertiary and quaternary consumers
d)
primary, secondary and tertiary consumers
18.
Surtsey is an island located south of Iceland. The island was formed by a volcanic eruption and first appeared in 1963. The table below contains descriptions of changes in the population and diversity of species on Surtsey.
Which of these lists the descriptions in the correct order of ecological succession on Surtsey?
Which of these lists the descriptions in the correct order of ecological succession on Surtsey?
a)
I, II, IV, III
b)
III, I, II, IV
c)
IV, III, I, II
d)
II, IV, I, III
19.
. In a food web, the population of which organisms would contain the lowest amount of biomass?
a)
Hawks
b)
Corn
c)
Mice
d)
Crickets
20.
Base your answer to the following question on the data table shown and on your knowledge of biology.
Which two species would most likely be able to live in the same habitat without competing with each other for food?
Which two species would most likely be able to live in the same habitat without competing with each other for food?
a)
B and D
b)
B and C
c)
A and C
d)
C and E
21.
. In a food web, the population of which organisms would contain the lowest amount of toxin (poison)?
a)
Hawk
b)
Corn
c)
Mice
d)
Grasshopper
22.
Nitrogen, a nutrient found in fertilizer, helps plants increase in size. Rainwater runoff often carries fertilizer into ponds and lakes. What effect does excess nitrogen have on organisms in a pond or lake ecosystem?
a)
Algae grows rapidly.
b)
Clam shells are slowly weakened.
c)
Frogs adapt quickly to new food sources.
d)
Mutations occur gradually in fish.
23.
. In a food web, the population of which organisms would contain the highest amount of energy?
a)
Hawk
b)
Corn
c)
Mice
d)
Grasshopper
24.
An energy pyramid for blue whales is depicted below.
If the phytoplankton produces 50,000,000 calories, how many calories will be available for the whales to receive?
If the phytoplankton produces 50,000,000 calories, how many calories will be available for the whales to receive?
a)
5,000,000
b)
50,000,000
c)
5,000,000,000
d)
500,000
25.
. In a food web, the population of which organisms would contain the lowest amount of energy?
a)
Hawk
b)
Corn
c)
Mice
d)
Grasshopper
26.
Rabbits were brought to Australia in 1859. By 1950, the rabbit population had grown to about 600 million. How did the population of rabbits most likely affect other Australian organisms?
a)
The populations of native carnivores decreased.
b)
The populations of native herbivores increased.
c)
The competition for food increased between herbivores.
d)
The number of food-web interactions decreased.
27.
A food chain is illustrated . The arrows represented most likely indicate
a)
the transport of glucose away from the organism
b)
energy released into the environment as heat
c)
oxygen produced by respiration
d)
the absorption of energy that has been synthesized
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