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WorksheetsSymbiotic Relationships and Food Webs
Total questions: 9
Worksheet time: 7mins
A yeast is a single‑celled organism that can reproduce sexually or
asexually. Which of the following would confirm that a yeast had
reproduced asexually?
offspring with its own unique genetic information unlike that of
the parent
offspring with the same genetic information as each of its
two parents
offspring with half the genetic information from each of two parents
offspring with the same genetic information as the parent
Scientists in Poland used radio collars to track the movements of wild
boars in each type of habitat during different times of year. The average
daily distances wild boars traveled in each habitat, in kilometers (km),
are shown in Figure 2.
Which of these is the most important role of technology in the
wild boar study?
reducing bias during analysis and interpretation of the data
producing graphs from the averages calculated by researchers
collecting data over long periods of time and across great distances
controlling external variables that are difficult for researchers
to observe
Coyotes share their habitats with gray foxes, which are related to
coyotes and are active at night. Gray foxes eat plants and animals,
including some of the same animals that coyotes eat. Which of the
following describes the most likely effect that coyotes have on
gray foxes in locations with large human populations?
decreased exposure to parasites and disease
increased protection from larger predators
decreased cooperation when finding food
increased competition over prey species
Alligators are found throughout Florida. Some of the characteristics of
alligators are listed.
Which limiting factor in an ecosystem would have the greatest impact
on the alligator populations in Florida?
reduction of shelter and nesting sites
diseases that affect a certain frog species
competition among male alligators for a mate
increase in the rate of water flowing in a river
Clownfish live among sea anemone's tentacles. The clownfish protect the sea anemone by chasing away organisms that want to attack the sea anemone. The sea anemone's stinging tentacles protect the clownfish from predators that want to attack the fish. What type of relationship exists between the clownfish and the sea anemone?
parasitism
commensalism
mutualism
non-symbiosis
One relationship between organisms is that of predator-prey. Which of the following is the best description of a predator?
An organism that eats another organism
An organism that participates in symbiosis
An organism that is eaten by another organism
An organism that benefits at the expense of another organism
What type of organisms provide the base for this food web?
Secondary Consumers
Primary Consumers
Producers
Top Predators
Sadie knows that bacteria can make people sick. Her teacher told her that bacteria are also necessary in any ecosystem. What positive role do bacteria play in an ecosystem?
Bacteria help in the transfer of oxygen between cells in multi-cellular organisms
Bacteria break down organic material and return nutrients to the surrounding environment
Bacteria use photosynthesis to create a major food source for animals in an ecosystem
Bacteria release large amounts of oxygen into the atmosphere
While growing on a lawn, some weeds, such as dandelions, struggle to get the nutrients and water that other plants, such as grass, also need to survive. This is an example of which of the following?
predation
commensalism
parasitism
competition
Which of the following is an example of parasitism?
bees and flowers
a tick on a dog
barnacles attached to a whale
a wolf and a rabbit
