WorksheetsEcology 2
Total questions: 32
Worksheet time: 18mins
What is true about all animals on Earth?
All animals are consumers.
All animals are mutualistic.
All animals are predators.
All animals are producers.
The graph shows the number of reindeer in a forest from 1970 to 2010.
Which point on the graph indicates that the population had been affected by competition among reindeer for a limited food supply?
a
d
c
b
The table shows different organisms interacting with each other to fulfill their basic requirements.
Which interaction(s) is (are) an example of parasitism?
only 1
only 2
both 2 and 3
both 3 and 1
The list shows symbols that a student used to show the relationship between different organisms.
A wasp pollinates fig flowers while searching for a suitable flower for laying eggs. Which symbols represent the relationship shared by the wasp and the fig tree?
+/+
+/ ̶
0/+
0/ ̶
A food web is shown in the diagram.
Which population of organisms has a predator and also competes with another population for the same energy source?
coyotes
huckleberry
live oaks
wild turkeys
The diagram (left) shows a food web.
Which type of organism is a decomposer?
copepods
dead algae
snails
zooplankton
Examine the food web with organisms W, X, Y, and Z indicated.
Which organism in this food web undergoes photosynthesis to obtain its energy?
W
X
Y
Z
Examine the energy pyramid.
The original source of energy is the sun. Which level has the most energy available to pass on to the next consumer?
grass
raccoon
grasshopper
wolf
Examine the food web of an area.
Which statement explains an effect of removing spiders from the ecosystem?
The snail population will increase due to the removal of a consumer.
Wood mice will begin to eat more shrews.
Shrews and wood mice will have less competition for grasshoppers.
Beetles and grasshoppers will decrease due to the loss of a predator.
Examine the food chain.
If a disease killed all the mice in this food web, how would that affect the owls and hawks?
Owls would be affected more because they are predators for fewer animals than the hawks.
Hawks would be affected more because they are predators for more animals than the owls.
Since they are both predators of mice, the hawks and the owls would be affected the same.
Since they are both predators of other animals, neither the hawks nor the owls would be affected.
A science club wants to restore an oyster reef for a community service project to help increase the oyster population in a local estuary. The science club has researched how to build an oyster reef and the life cycle of oysters.
Which step of the technological design process should the science club take next?
Build the oyster reef.
Design the oyster reef.
Evaluate the success of the oyster reef.
)Redesign the oyster reef.
Examine the food chain.
An organism that feeds on oak trees migrates into the ecosystem. Which consequence is likely to occur first?
The population of squirrels will increase.
The population of snakes will increase.
The population of oak trees will increase.
The population of owls will increase.
The table shows data collected on the growth rate of a fruit fly population.What conclusion does the data support?
The population of fruit flies will continue to grow after 45 days pass.
The population of fruit flies reaches the carrying capacity at 35 days.
The death rate of fruit flies is greater than the birth rate of fruit flies at 40 days.
A disease enters the population at 35 days and prevents population growth.
Which organism is a link between an aquatic food web and a terrestrial food web?
clam
dolphin
penguin
shark
An ecosystem can support a population of 1,500 frogs. What will happen if the number of frogs increases to 2,750?
The frog population will decline sharply.
The frog population will continue to increase.
The frog population will become stable at 2,750.
The frog population will have a lower death rate.
A timber company removed 80% of the trees in a forested area. Scientists monitored the owl population over the ten years since the removal of the trees.
The data are recorded in the table.
Which graph represents the data?
Peter bought a blueberry plant on his visit to Michigan. He planted it in his garden when he returned to North Carolina and observed that the plant had stunted growth even though it was watered regularly and provided with proper sunlight.
What can be a reason for the poor growth of the blueberry plant?
The blueberry plant requires a specific soil type for growth.
The blueberry plant grows only when its seeds are planted.
The blueberry plant grows best in the presence of other blueberry plants.
The blueberry plant needs to be planted in the ground for proper growth.
A scientist wanted to know how tadpole population density (i.e., the number of tadpoles per volume of water) affects the average body weight (in grams) of a tadpole in that population. Four different tadpole population sizes were chosen (15, 60, 240, and 480), and the populations were stocked in 4 separate but identical 3 L glass aquariums. Food, temperature, and light were kept constant, and all the tadpoles weighed 0.04 g at the start of the experiment. The graph shows the results of the experiment after 10 weeks.
What can be concluded from the graph?
The tadpoles gained body weight faster when the population size was larger.
The tadpoles gained body weight faster when the population size was smaller.
The body weight gained by the tadpoles per week was the lowest when the population size was 15.
The body weight gained by the tadpoles per week was the same for population sizes 240 and 60.
What will most likely happen to a population when the availability of food and water is less than what a given population needs?
emigration
large immigration
no change
small immigration
Study the diagram with one process represented by the X.
What do the arrows pointing to the X represent?
energy being recycled
energy being used by organisms
energy flowing out of the ecosystem
energy from the Sun
Which sequence categorizes the five levels of ecological organization from least inclusive to most inclusive?
biosphere, ecosystem, population, community, organism
ecosystem, biosphere, community, population, organism
organism, community, population, ecosystem, biosphere
organism, population, community, ecosystem, biosphere
Sally planted 15 carrot seeds in Pot A and 5 carrot seeds in Pot B, each containing potting soil. Both the pots were placed outside and watered regularly. After a week, the plants in Pot B looked healthier than those in Pot A.
What is the best explanation for the better health of the plants in Pot B?
The plants in Pot B received more water.
The plants in Pot A had less space to grow.
The seeds placed in Pot A were of poor quality.
The seeds placed in Pot B were treated with pesticides.
Peter wants to grow some bell peppers in his garden. Peter tests the pH of the soil and finds that the plants will thrive in the soil. What was the most likely pH reading of the soil?
1
3
6
14
What is the relationship between particle size and permeability?
As particle size increases, the permeability decreases.
As particle size increases, the permeability increases.
As permeability decreases, the particle size decreases.
As permeability increases, the particle size remains constant.
William is studying the permeability of several different compositions of soil. Which example is the best testable question for William’s investigation?
How does water flow through permeable soil?
How does particle size affect the permeability of water through soil?
How fast does water move through permeable soil?
Which soil composition is best for growing different kinds of plants?
The nonliving aspects of an ecosystem.
Abiotic factors
Biotic factors
The living portions of the ecosystem.
Biotic factors
Abiotic factors
