4.04 Ecosystem Structure and Biodiversity Quiz Review

​11/5 Quiz Review




Ecosystem Structure and Biodiversity

Match

match each word with its definition

• something that was never alive

• something that is alive or was once alive

• :)

abiotic

biotic

:)

• abiotic

• biotic

• :)

Categorize

Options (8)

bacteria

grass

dead tree

water

soil

rain

platypus

temperature

⭐Categorize the following as a biotic factor or an abiotic factor.​⭐

biotic

abiotic

1. Organism: single living thing, such as a plant, animal, or microorganism.​

2. Population: group of the same type of organisms living in a specific area at the same time.​

3. Community: all the different populations of organisms that live and interact in a particular area.​

4. Ecosystem: all the living (biotic) and non-living (abiotic) components in a specific environment, interacting as a system.​

5. Biome: large geographic area defined by its climate, plants, and animals, such as deserts or forests.

6. Biosphere: global sum of all ecosystems, where life exists on Earth, including land, water, and the atmosphere.

Levels of Ecological Organization​

​Bilbo Baggins Eats Cake, Pie and Oranges

Reorder

Sort the levels of ecological organization from largest 5 to smallest 1

• Biosphere

• Biome

• Ecosystem

• Community

• Population

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Match

species diversity examples - do you see HIGH or LOW species diversity?

• :)

high species diversity

low species diversity

:)

• high species diversity

• low species diversity

• :)

Match

genetic diversity examples - do you see HIGH or LOW genetic diversity?

• :)

high genetic diversity

low genetic diversity

:)

• high genetic diversity

• low genetic diversity

• :)

Multiple Choice

⭐Where would you expect to find the most genetic diversity among humans?⭐

• in a city

• in a family

• in a small town

• in a tribe

Multiple Choice

⭐In which ecosystem would you expect to find the most biodiversity?⭐

• a desert

• a pond

• a rainforest

• a tundra

Multiple Choice

Which habitat example represents a community with high species evenness but low species richness?

• a field with a variety of flower species

• a forest of brush and low lying vegetation

• a coral reef with many species of fish and vegetation

• a pond full of one species of fish

Generalist, Specialist, Keystone, and Indicator Species

• A generalist species is a species adapted to thrive in a variety of habitats.

• A specialist species is a species adapted to thrive in a specific habitat.

• Keystone species are organisms that have a disproportionately large impact on their environment relative to their abundance.

• An indicator species is a species monitored for early warnings that a community or ecosystem is being damaged.

Match

⭐match the type of species with the correct description⭐

• 
  

  can live in a wide range of conditions

• highly adapted to specific environments

• reveal ecological imbalances

• Important species for ecosystem health.

generalist species

specialist species

indicator species

keystone species

• generalist species

• specialist species

• indicator species

• keystone species

Extinction Rates

The background extinction rate is the rate at which organisms would naturally be expected to go extinct.
The background extinction rate is 50 to 100 times greater than what is expected by scientists.

The current extinction rate, or number of species that go extinct over a given period of time, is estimated to be 40,000 species per year.

Multiple Choice

⭐What is the background extinction rate?⭐

• The rate at which species go extinct due to human activity

• 
  The natural rate at which species go extinct

• The rate at which new species are discovered

• The rate at which species are born

Multiple Choice

⭐Which factor influences the biodiversity of an ecosystem the most?⭐

• competition

• disease

• human activity

• natural disasters

Human Impacts on Biodiversity

The major causes of extinction today are:

• habitat destruction

• invasive species

• climate change

• overharvesting

• pollution

​HICOP

Multiple Choice

⭐Which of the following is an example of human activity contributing to extinction?⭐

• Habitat destruction

• Natural selection

• 
  Seasonal changes

• 
  Predation