Biodiversity Lesson 3

Biodiversity Lesson 3

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Open Ended

LAST LESSON! YAY! No NEW CONTENT (besides HG&D)

Over this school year, what is one of your favorite positive moments? It doesn't have to be from class, can be anything.

Now let's go dark & talk extinctions!

​Please note, this is a joke. Earth is not flat. The dinosaurs were not flung up into the atmosphere to burn and die. Their brutal demise happened on the our spherical surface!

Fill in p. 6 of Notes if Missed in Class!

Permian Extinction

• Largest Mass Extinction!

• 95% of marine species went extinct

• 70% of land species

• Due to extreme volcanism ~250mya (video said comet and this is not the ultimate cause)

• You will possibly study extinctions next year in more detail

Multiple Choice

The Permian extinction was the worst extinction. Using the graph, which was the second worst extinction?

• end of the movie Jurassic Park

• end of the Devonian Period

• end of the Triassic Period

• end of the Cretaceous Period

Multiple Choice

Humans are causing extiction in which ways?

• By over hunting animals for food or products.

• By destroying the natural habitat of species.

• By polluting the environments of the world.

• By introducing invasive species

• All of the choices

Multiple Choice

When a plant or animal becomes extinct, it is gone _______.

• forever

• until next week

• for 5 years

• to sleep

Multiple Choice

Which of the following is NOT a reason a species may become extinct?

• competition
• reproducing
• habitat loss
• overhunting

Multiple Choice

Which of these describes a species that has become extinct?

• fewer members of the species are dying than being born
• more members of the species are dying than being born
• very few members of a species are alive
• all members of a species have died

So what is a Biodiverse Hotspot?

Multiple Choice

Where are many critical biodiversity hotspots located?

• islands, tropical rain forests, and coastal areas

• cities and developed areas of the world

Multiple Select

A biodiverse hotspot is? (Please check all that apply)

• There are several hotspots around the world

• They have unique species only found in that area (endemic species - not making you learn this term)

• Areas where extinction rates are too high

• Home to thousands of irreplaceable species

Multiple Choice

Which of the following describes the importance of biodiversity to an ecosystem?

• People like to be able to see all the different plants and animals

• Too many different species waste natural resources

• Biodiversity is not as important as many people think

• Biodiversity can help minimize the effects of losing a species.

Biodiversity Global Hotspots

Multiple Choice

What has helped make California have such a huge biodiversity?

• earthquakes due to plate tectonics

• many ecosystems due to plate tectonics

• more people interested in protecting the environment

Multiple Choice

A species form that supports an entire ecosystem.

• Keystone Species

• Herbivores

• Umbrella Species

• Predators

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

• They provide a source of glucose for living things

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

A species that plays a critical role in the health, maintenance, growth, or definition of an ecosystem.

• keystone

• invasive

• engineer

• predator

Multiple Choice

The largest number of individuals that an environment can support long term is...

• carrying capacity

• emigration

• immigration

• population density

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 specie in this graph?

• 1000

• 8000

• 800

• 600

Multiple Select

Which of the following affects the carrying capacity of an ecosystem?

• Energy (food options)

• Space (habitat)

• Water

• Availability of chocolate

Poll

I feel comfortable with the following....

• Describing a biodiversity hotspot

• Describing a keystone species & their importance

• Explaining the importance of biodiversity in nature

• Explaining how the idea of biodiversity also affects businesses etc. (apply the ideas to other areas)

• Define carrying capacity & role of extinction/birth rate