Biology 1_Unit 4_Milestone and Final Exam Review_Ecology

Biology 1_Unit 4_Milestone and Final Exam Review_Ecology

Multiple Choice

What are some abiotic factors that could be limiting factors in the Iowa River ecosystem?

• Temperature, fertilizer runoff from fields, drought or flood

• Invasive species, floods

• Temperature, predators, droughts, floods, over fishing

Multiple Choice

An early winter frost preventing further growth in a tomato garden is an example of

• carrying capacoty

• limiting factors

• a biotic factors

• indirect observation

Multiple Choice

What is the carrying capacity of the graph?

• around 500

• more than 800

• less than 300

• around 700

Multiple Choice

What happens if a population grows past its carrying capacity?

• The population keeps growing

• The population starts to die off

• The entire species will go extinct

• The carrying capacity just increases

Multiple Choice

What is the carrying capacity of the graph?

• 1000

• 8000

• 800

• 600

Multiple Choice

Why are bees considered a keystone species?

• The honey they make supports the bear population

• They pollinate flowers that produce fruit which supports the ecosystem

• They sting when threatened

• They live in hives

Multiple Choice

What is a keystone species?

• A species that helps to hold an ecosystem together

• A species that lives in or around rocks

• Keys and stones have nothing to do with ecology

• A keystone isn't a living thing, it's just a stone

Multiple Choice

Using the everglades energy pyramid provided, which of the following statements describes the transfer of energy in this pyramid. Energy is transferred from ________ .

• from the grass, to the marsh rabbits, back to the grass

• from the Florida panther, to the gray fox, to the marsh rabbits

• from the grass, to the marsh rabbits, to the gray fox, to the Florida panther

• from the Florida panther, to the gray fox, to the marsh rabbits, to the grass

Multiple Choice

A team of ecologists observed feeding patterns of several populations in the desert. Which of the following best explains the difference in the amount of available energy in the trophic levels of the desert ecosystem?

• There is less energy in the producers because they are at the bottom.

• There is more energy in the producers because they provide energy for all the consumers in the ecosystem.

• There is more energy available in the tertiary consumers because they need the energy to hunt.

• There is more energy in the level containing the top predators because they are larger in size.

Multiple Choice

An arctic food web is shown. Suppose that the lemming population is removed from the web. Which of the following would be a likely short-term effect of this change?

• The arctic fox population will increase.

• The polar bear population will increase.

• The caribou population will decrease.

• The snowy owl population will decrease.

Multiple Choice

A diagram of a food web is shown below.Which organism receives the least amount of energy from the producers?

• Hawk

• Rabbit

• Grasshopper

• Mouse

Multiple Choice

What do the arrows in the food chain show?

• The transfer of energy

• What animals eat

• The order of animal dominance

Multiple Choice

How much energy is lost when organisms consume another organism from a different level?

• 90%

• 20%

• 50%

• 10%

Multiple Choice

What amount of percentage does the energy decrease as it goes up the pyramid?

• 100%

• 1000%

• 10%

• 1%

Multiple Choice

Breaking News! A new island has formed off of Hawaii! What must occur for it to become an ecosystem?

• Secondary Succession

• Aquatic succession

• Primary Succession

• Ferns must grow

Multiple Choice

What type of succession is shown going from figure A to figure B?

• primary succession

• eutrophication

• secondary succession

• intermediate

Multiple Choice

What type of succession is shown going from figure A to figure B?

• primary succession

• eutrophication

• secondary succession

• intermediate

Multiple Choice

Fishermen have harvested certain fish to the point where the population of that fish is decreasing. This level of direct harvesting could cause

• ecosystems to be improved for future generations

• ecosystems to be severely damaged

• the restoration of environmental stability

• all other fish species to increase in number

Multiple Choice

Fishermen have harvested certain fish to the point where the population of that fish is decreasing. This level of direct harvesting could cause

• ecosystems to be improved for future generations

• ecosystems to be severely damaged

• the restoration of environmental stability

• all other fish species to increase in number

Multiple Choice

Denitrifying bacteria

• Turn nitrogen gas into nitrates so that plants can synthesize amino acids.

• Turn nitrates into nitrites so that nitrogen fixing bacteria can synthesize DNA.

• Returns nitrogen into the atmosphere in the form of N₂ gas.

• Use phosphorus as fertilizer.

Multiple Choice

Why do living things need nitrogen?

• To get energy

• To make amino acids

• To make proteins

• To make proteins AND amino acids

Multiple Choice

The carbon in coal, oil, and natural gas came from

• the combustion of fossil fuels

• the remains of dead organisms

• carbon-fixing bacteria in swamp soil

• carbon dioxide dissolved in ocean water

Multiple Choice

In an ecosystem, what happens to the atoms of certain chemical elements, such as carbon, oxygen, and nitrogen?

• They move into and out of living systems.

• They are only found in abiotic factors.

• They move out of living systems and do not return.

• They move into living systems and remain there.

Multiple Choice

Phosphorous is needed in organisms for the production of

• ADP and ATP.
• Cellular membranes.
• Deoxyribonucleic and ribonucleic acids.
• All of the answers are correct

Multiple Choice

What is the only process that removes carbon from the atmosphere?

• combustion

• cellular respiration

• photosynthesis

• decomposition

Multiple Choice

What is the only process that removes carbon from the atmosphere?

• combustion

• cellular respiration

• photosynthesis

• decomposition