Unit 7 EOC Review Notes and Key

​Go through the slides to review back over Unit 7 - our Ecology Unit. Slides that are marked with "This is on your Review Sheet" contain the answers to the questions on the review sheet in your packet. Make sure you answer the Quizizz questions embedded throughout. There will be some information that is not covered on your review sheet that is covered and reviewed in this Quizizz. Work all the way to the end of the Quizizz.

​Unit 7 - Ecology Review Notes and Answers

Producers (Autotrophs) - make their own food (glucose) and turn it into energy (ATP). Plants, algae, etc.

Consumers (Heterotrophs) - need to eat in order to get energy.
Herbivores - eat plants
Carnivores - eat meat
Omnivores - eat both plants and meat
Decomposers - break down dead/decaying
organisms and return nutrients to the soil.

​

​Producers and Consumers

Primary Consumer - Eat producers. They are the first consumer in a food chain. Can be an herbivore or an omnivore

Secondary Consumer - Eat primary consumers. They are the 2nd consumer in a food chain. Can be an omnivore or a carnivore.

Tertiary Consumer - Eat secondary consumers. They are the 3rd consumer in a food chain. Can be an omnivore or a carnivore.

**Organisms can be more than one type of consumer. If the snake eats the grasshopper, then it is a secondary consumer as well as a tertiary consumer. ​

​Producers and Consumers

​This is on your review sheet.

Multiple Choice

All living things get their energy from which of the following sources?

• food
• water
• sun

Match

Match the following

• Carnivore

• Herbivore

• Ominvore

• Autotroph

• Heterotroph

Eats only meat

Eats only plants

Eats both plants and animals

Can make their own food/glucose

Cannot make own food/glucose. Must eat.

• Eats only meat

• Eats only plants

• Eats both plants and animals

• Can make their own food/glucose

• Cannot make own food/glucose. Must eat.

Multiple Choice

In the food web shown, the snail would be considered...

• primary consumer
• secondary consumer
• tertiary consumer
• producer

​This is on your review sheet

Categorize

Options (15)

Relationship where both organisms benefit

Example: Bee and flower relationship

One organism benefits while the other is unaffected

Example: Barnacles on a whale

Relationship where one organism benefits and the other is harmed

Example: Tick feeding on a host's blood

Both benefit (+, +)

One benefits, the other is not affected (+, 0)

One benefits, the other is harmed (+, -)

Pollination of flowers by bees (+, +)

Humans cultivating crops that provide food for animals (+, +)

Birds nesting in the branches of trees without harming them (+, 0)

Barnacles attaching to whales without harming them (+, 0)

Tapeworms living in the intestines of hosts (+, -)

Leeches attaching to fish and humans (+, -)

Match the following

Mutualism

Commensalism

Parasitism

Multiple Choice

What is a niche?

• the place where a species lives
• what a species eats
• the role of a species
• how a species uses resources

Multiple Choice

If multiple organisms share the same niche, what will happen?

• All the populations will grow in size.

• All the populations will decrease in size

• There will be an increase in competition between the organisms for resources

• There will be a decrease in competition between the organisms for resources

Multiple Choice

As the population of rabbits increases, what happens to the population of wolves?

• The population of wolves decreases

• The population of wolves stays the same

• The population of wolves increases

Multiple Choice

Which statement about predator-prey relationships is true?

• The predator population is NOT dependent on the prey population. Both will change independent of each other.

• The predator population is dependent on the prey population. As one changes, the other will change.

• The predator population will only increase and the prey population will only decrease.

Multiple Choice

A food chain is a diagram of how 

• communities are connected
• energy and nutrients pass among organisms in an ecosystem
• producers make food
• an ecosystem develops and changes

Multiple Choice

Who does the owl get energy from? 

• Grass
• Grasshopper
• Mouse
• Ow

Multiple Choice

What do the arrows show in a food chain picture?

• They always point to the smallest animals.
• They point to the animal that tastes the best.
• They always point to the producers.
• They point in the direction that energy is flowing.

​This is on your review sheet

This is on your review sheet

​This is on your review sheet

Multiple Choice

What may happen if the snowshoe hare was removed from the food web pictured?

• The insects in the habitat would increase.
• The shrew population would decrease due to being only hawk food source.
• The willow tree population would decrease.
• Foxes would dies due to no food source. 

Multiple Choice

It's hunting season for wolves which drives the population of wolves down. What will happen to the population of rats?

• The population of rats will decrease

• The population of rats will increase

• Nothing will happen to the population of rats, it will stay the same

​This is on your review sheet

Multiple Choice

In the energy pyramid here, how much of the energy in the producers gets passed to the herbivores?

• 10%
• 20%
• 80%
• 90%

Multiple Choice

In the energy pyramid here, which organisms have the most energy available?

• Producers

• Carnivores

• Herbivores

• Top Predator

Multiple Choice

In terms of energy flow, why is the amount of energy transferred from one trophic level to the next higher level typically only about 10%?

• Because the rest is used for the organism's life processes

• Because most of the energy is lost as heat

• Because the rest is stored and not used

• Both A and B are correct

Multiple Choice

In general, why does the population sizes of consumers decrease as you go up the pyramid? (ex: the population sizes of primary consumers (grasshoppers) are larger than the population sizes of secondary consumers)

• There is way too much energy available to maintain populations

• There is not enough energy available to sustain large populations

• The pyramid is wrong. The population sizes are the same all throughout

​This is on your review sheet

Reorder

Reorder the following levels: (smallest on the left, largest on the right)

• Organism

• Population

• Community

• Ecosystem

• Biome

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Match

Match the following

• A group of monkeys

• Monkeys, trees, snakes, and frogs in an area

• Monkeys, trees, snakes, water, dirt, and sun in an area

• Areas such as deserts, rainforests, ocean, tundra

• All the areas of earth where living things are

population

community

ecosystem

biome

biosphere

• population

• community

• ecosystem

• biome

• biosphere

​This is on your review sheet

Match

Match the following

• Density dependent factor

• Density independent factor

• carrying capacity

A virus depends upon other organisms to be there to spread

Examples are floods, tornadoes, they do not depend on a population to happen

the amount of food, water, and shelter that the environment can provide to support the population

• A virus depends upon other organisms to be there to spread

• Examples are floods, tornadoes, they do not depend on a population to happen

• the amount of food, water, and shelter that the environment can provide to support the population

Multiple Choice

Will competition increase/decrease the carrying capacity of an ecosystem for the animal in competition?

• Decrease
• Increase

Multiple Choice

Which of the following is NOT a factor that affects carrying capacity?

• Amount of available food

• Space for territories

• Number of predators

• The color of the organisms

Multiple Choice

What is the carrying capacity of the graph?

• around 500

• more than 800

• less than 300

• around 700

Multiple Choice

Something that regulates the size of a population is called...

• a limiting measure

• a limiting factor

• carrying capacity

• biodiversity

Multiple Choice

Which of the following would INCREASE the carrying capacity of an ecosystem?

• increase in predators
• disease
• increase in available food
• drought

Multiple Choice

Which is NOT an example of a density-dependent factor?

• Communicable disease

• The average rainfall of a region

• Predation

• Parasitism

Multiple Choice

Which are two ways a population can decrease in size? (immigration = coming into an area; emigration = leaving an area)

• increased death rate and emigration

• emigration and increased birth rate

• immigration and emigration

• increased death rate and immigration

​This is on your review sheet

Drag and Drop

Renewable resources​

Placeholder

regenerate and an example of a renewable resource is​

Placeholder

Drag these tiles and drop them in the correct blank above

do

solar power

Oil

do not

copper

Multiple Choice

Which resources are non-renewable?

• Wind, Solar, Hydroelectric

• Coal, oil, natural gas

• Trees and algae

Multiple Choice

What is biodiversity?

• The variety of different species living in an ecosystem

• The number of organisms in a particular area

• The different color variations of a single species

• The various biome locations on Earth

Categorize

Options (4)

Nonliving factors in an ecosystem

Sunlight, water, dirt, climate, oxygen, etc.

Living factors in an ecosystem

Animals, plants, bacteria, fungi, etc.

Organize these options into the right categories

Abiotic Factors

Biotic Factors

Multiple Choice

Which statement is an example of how carbon moves through a food chain as part of the cycle?

• Producers release carbon dioxide, and consumers take it it.

• Producers take in carbon dioxide, and consumers release it.

• Producers take in carbon from the soil, and they release it when they decompose.

• Producers release carbon into the soil, and consumers take it in from the soil.