WorksheetsSB5C
Total questions: 25
Worksheet time: 31mins
When unlimited resources are in an ecosystem, populations will most likely show which type of growth?
a
b
both
none of these
Refer to the graph. An increase in the size of a predator population...
leads to an increase in the size of its prey population
usually results in the extinction of its prey population
will cause a decrease in the size of its prey population
causes no change in the size of its prey population
A pond ecosystem is shown in the diagram. Which statement describes an interaction that does not maintain the dynamic equilibrium of this ecosystem?
The frogs make energy available to this ecosystem through the process of photosynthesis.
The algae directly provide food for both the rotifers and the mosquito larvae.
The green-backed heron gets energy from the catfish.
The catfish population helps control the populations of water boatman and water fleas.
Which of the following leads to an increase in biodiversity?
protection of ecosystems
pollution
habitat destruction
introduction of exotic or invasive species
When a population grows past the ecosystem's carrying capacity, what happens to the population?
Continues to grow
The population starts to die off to return to carrying capcity
The population will go extinct due to lack of resources
The population grows then finds a new carrying capacity
The shrew gets energy from which organism in the picture?
cricket
frog
grass
snake
Because of sport hunting and the draining of marshlands, the size of the whooping crane population reached a low of 16 individuals in 1940. Since then, conservation efforts have been put in place to increase the whooping crane population size. Which of the following actions would most likely decrease the size of the whooping crane population with the greatest impact on the ecosystem?
Introducing new insect species for whooping cranes to eat.
Increasing all wild predators in the whooping crane’s habitat.
Establishing protected areas for whooping crane breeding and migration
Counting whooping crane populations by tagging and releasing individual birds
Examine the model of the carbon cycle. Carbon is transferred from one biotic component, the cow, to a second biotic component, the decomposers. Using the model, select ALL the ways that carbon could be transferred from animals to decomposers.
As waste
In dead carcasses
As carbon dioxide
In scraps of food
Analyze the pyramid representing the energy flow through an ecosystem. Select the phrase(s) that do not describe the flow of energy in this ecosystem according to the image here.
Top carnivores obtain the maximum energy from the ecosystem.
Herbivores have more energy available to them than carnivores.
There should be fewer tertiary consumers than secondary consumers.
Soil organisms recycle nutrients but not energy back into the ecosystem.
In this Food Web Pyramid what is the proper name for the organisms above the producer level at the bottom.
herbivores
consumers
carnivores
omnivores
The image below shows stages of change to a forest. Which stage best represents the beginning of secondary succession?
Stage 1
Stage 3
Stage 4
Stage 8
In succession, how should scientists classify the moss and lichen?
Climax community
Invasive species
Native species
Pioneer species
In 1988, James Hansen projected future warming trends. He used 3 different scenarios, identified as A, B, and C. Each represented different levels of greenhouse gas emissions. All three indicated a strong cause and effect relationship between observed temperatures and human emissions of greenhouse gases into the atmosphere. Greenhouse gas emissions are at the center of almost all climate change concerns. Which is NOT likely an effect of increasing Greenhouse gas emissions on the ecosystem?
Rising sea-levels
Changes in precipitation resulting in flooding and droughts.
Decreases in respiratory illnesses due to the warming temperatures and shorter winters.
Oceans becoming more acidic.
The table shows the minimum pH that some common freshwater organisms can survive in water.
Which organism would be MOST sensitive to acid rain?
Bass
Clams
Frogs
Mayflies
A manatee is a water-dwelling herbivore on the list of endangered species. If manatees were to become extinct, what would be the most likely result in areas where they had lived?
Certain producer organisms would become more abundant in the area.
Other manatees would move into the area and restore balance.
Predators in the area would have more food to eat.
The area would not be affected.
What are the dangers of overusing nitrogen-containing fertilizers and pesticides?
The excess nitrogen will be stored in plants and would be dangerous for herbivores to consume.
The excess nitrogen will cause a halt of the Nitrogen cycle.
The excess nitrogen will cause plants and algae to grow at a rapid rate, disrupting the natural ecosystem.
The excess nitrogen will have no dangers to the environment because we need nitrogen to live.
What happens when the glaciers and ice caps melt?
Arctic and antarctic temperatures drop and become colder.
Sea levels rise.
Tropical rainforests get more rain.
None of these.
A student was studying the changes in carbon dioxide levels over time, as shown in the readings at Mauna Loa atmospheric station in Hawaii. In trying to reduce levels of carbon dioxide, the student wants to design and implement solutions to accomplish this goal. Which of these solutions would lower carbon dioxide and greenhouse gas emissions if implemented?
The student could use coal to heat the home rather than a furnace.
The student could walk to locations rather than use a car to reduce carbon dioxide emissions.
The student could promote the use of combustion engine vehicles rather than traditional hybrid vehicles.
The student could promote tearing down forests so building companies have more room to build houses.
The data indicate the populations of mammals in the Florida Everglades in different years over the past two decades. The Burmese python, a non-native species, was introduced to Florida as an exotic pet. After Hurricane Andrew hit Florida in 1992, many pet owners lost track of their non-native snakes. The biodiversity of the Everglades has decreased since then.
According to the data, what hypothesis is best supported with regard to Burmese pythons and Florida Everglade biodiversity?
Burmese pythons are herbivores and have increased all populations of mammals.
Pythons don't compete with raccoons for food sources.
Pythons don't have limiting factors in the Everglades.
Pythons carry diseases that wipe out the native mammal populations in the everglades.
What long-term impact could the destruction of large areas of forests have on Earth?
decreased rates of erosion
increased atmospheric carbon dioxide levels
decreased amounts of acid rain
increased atmospheric oxygen levels
If there is not enough water in the ecosystem for plants to provide enough oxygen through photosynthesis then living things would not be able to do what process?
Photosynthesis
Cellular respiration
Oxygen
Carbon dioxide
Solar radiation travels through the earth's atmosphere and warms the planet's surface. Greenhouse gases like carbon dioxide in the earth's atmosphere reabsorb the heat and warm the planet. The amounts of greenhouse gases have been increasing over the past century, causing the earth's surface temperature to increase. This gradual temperature change is thought to have many negative environmental consequences.
Select which of these might be a NEGATIVE effect of the increase in carbon dioxide levels on plants?
Rise in sea levels.
Decreased plant growth.
Increased plant growth.
Increase in ocean acidity.
Euglena is a one-celled protist that has traits of both plant and animal cells. It contains chlorophyll and has an eye spot to detect light. Yet, it has a flagella for movement through its aquatic environment and can ingest food through its gullet.
A colony of euglena are exposed to sunlight. Based on the traits of this organisms, what would you expect to happen?
They will live in areas with a lot of light so they can photosynthesize.
They will live in areas with a lot of light so they can use cellular respiration.
They will live in areas without a lot of light so they can photosynthesize.
They will live in areas without a lot of light so they can use cellular respiration.
Approximately two-thirds of the mass of a cell is water, and the water is important to maintain the cell's integrity. What would happen to a plant cell during a period of severe flooding?
The flood would have no effect on the cell.
The cell would expand in size as it absorbed water.
The cell would increase its ability to do photosynthesis.
The cell would shrink in size as it lost water.
How does a drought change the environment?
It fills the air with dust and ash
slowly moves sediment from place to place.
causes too much rain
slowly causes vegetation to perish
