[qwiz dataset=”Ecology Click On Challenge” qrecord_id=”sciencemusicvideosMeister1961-Ecology Click-On Challenge” quiz_timer=”true” random=”true” dataset_intro=”false” spaced_repetition=”false”]

[h] Ecology Click-On Challenge

[i] Notice the timer in the upper right. Your goal is to work as quickly and accurately as possible.

A food web showing trophic levels

[q json=”true” hotspot_user_interaction=”label_prompt” dataset_id=”Ecology Click On Challenge|1db9f2b50fb67″ question_number=”1″ show_hotspots=”hover_hide click_hide”] The carbon cycle. Click on the reservoir, flow, or its letter or number.

CO2 in the atmosphere

Awesome! CO2 is at number 1. 

HINT FOR NEXT TIME: Carbon dioxide has one carbon atom and two oxygen atoms.Where do you see a molecule like that? 
Photosynthesis

Excellent: “A” is photosynthesis.

HINT FOR NEXT TIME: Find an arrow that’s bringing carbon into plants. 
Respiration by plants

Exactly. “B” is respiration by plants.

HINT FOR NEXT TIME: Find an arrow that’s moving carbon from plants back to the atmosphere.
Ecological Producers

Exactly.  Plants, at “2” are ecological producers.

HINT FOR NEXT TIME:  Plants are ecological producers. 
Consumption

Fantastic. “C” is consumption.

HINT FOR NEXT TIME:  Consumption moves carbon-based compounds from plants to animals.
Ecological consumers

Good work: “3” represents ecological consumers.

HINT FOR NEXT TIME:  Animals are ecological consumers.
Death

Great! Death by animals is “E.” Death by plants is “F.”

HINT FOR NEXT TIME:  Find arrows moving from animals or plants to decomposers. Bacterial and fungi are decomposers.
Decomposers

Nice! The fungi and bacteria at “4” are decomposers.

HINT FOR NEXT TIME:  Fungi and bacteria are decomposers.
Fossil fuel formation

Outstanding! The arrow at “H” represents fossil fuel formation.

HINT FOR NEXT TIME:  Find the arrow that’s going from dead plants to the oil rig.
Fossil fuels

Superb! “5” represents fossil fuels.

HINT FOR NEXT TIME:  Coal, oil, and natural gas are fossil fuels.
Fossil fuel extraction (mining/drilling) and processing.

Terrific. Letter “I” represents fossil fuel extraction.

HINT FOR NEXT TIME:  Find a flow that would take oil/petroleum from the ground to machines.
Fossil fuel powered machines

That’s right. Number 6 represents fossil fuel powered machines

HINT FOR NEXT TIME:  A factory is (usually) either powered by fossil fuels, or by electricity from fossil fuels.
Combustion

Thumbs up! “J” represents combustion.

HINT FOR NEXT TIME:  Machines/factories (often) combust fossil fuels, which emits carbon dioxide into the atmosphere.
Respiration by decomposers.

Way to go! “G” represents respiration by decomposers.

HINT FOR NEXT TIME:  Decomposition involves cellular respiration, which releases carbon dioxide into the atmosphere. Find a flow from decomposers.

[q json=”true” hotspot_user_interaction=”label_prompt” show_hotspots=”hover_hide” dataset_id=”Ecology Click On Challenge|130f67796d3b3b” question_number=”2″] Food chain

Autotrophs

Yes. Autotrophs are at level “1.”

HINT FOR NEXT TIME: The autotrophs are ecological producer.
herbivores

Way to go. The herbivores are at “2”

HINT FOR NEXT TIME: The herbivores are the primary consumers. 
Secondary consumers

Very nice. Secondary consumers at at “3.”

HINT FOR NEXT TIME: The secondary consumers are carnivores.
Where you’d find the highest level of a lipid-soluble toxin.

Thumbs up. The highest concentration would be at the top of the food chain.

HINT FOR NEXT TIME: Because they often can’t be metabolized, lipid soluble toxins become more concentrated as you move up a food chain.

[q json=”true” hotspot_user_interaction=”label_prompt” show_hotspots=”hover_hide” dataset_id=”Ecology Click On Challenge|16b93d1eeeefdd” question_number=”3″] Nitrogen cycle

The number for the leaves and stems of legumes with nitrogen-fixing root bacteria

That’s right. Legumes are at “3.”

HINT FOR NEXT TIME: Look for plants that have nitrogen-fixing bacteria in their roots. 
The number for the nitrogen-fixing bacteria in the roots of legumes.

Terrific. The nitrogen fixing root bacteria are at “4”

HINT FOR NEXT TIME: Follow the arrow that shows nitrogen flowing from the air into bacteria in the roots of plants.
Free-living nitrogen-fixing soil bacteria

Superb. Free-living nitrogen fixing soil bacteria are at “5.”

HINT FOR NEXT TIME: Follow the arrow that shows nitrogen flowing from the air into bacteria in the soil (but not in plant roots). 
Ammonium producing decomposers

Outstanding. Ammonium producing decomposers are found at 6 and 7.

HINT FOR NEXT TIME: Decomposers take dead animals and plants, and convert their nitrogen compounds (proteins and nucleic acids) into ammonium.
Nitrifying bacteria

Nice going. The bacteria at 8 are nitrifying bacteria.

HINT FOR NEXT TIME: Find bacteria that convert ammonium to nitrites, or nitrites to nitrates.
Denitrifying bacteria

Nice job. Denitrifying bacteria ar at “9.”

HINT FOR NEXT TIME: Denitrifying bacteria take nitrates and convert it into atmospheric nitrogen.
The number for a plant that’s assimilating nitrates from the soil.

Nice. The plant at “1” is assimilating nitrates from the soil.

HINT FOR NEXT TIME: Find an arrow moving from nitrates in the soil, into a plant.
The biggest reservoir of atmospheric nitrogen.

Great! It’s nitrogen gas in the atmosphere.

HINT FOR NEXT TIME: This molecule makes up 70% of the atmosphere. 

[q json=”true” hotspot_user_interaction=”label_prompt” show_hotspots=”” dataset_id=”Ecology Click On Challenge|552d0ce43758f” question_number=”4″] Trophic levels. The producers have 7,000,000 units of energy.

The trophic level with the most harvestable energy.

Good job. The producers would have the most harvestable energy.

HINT FOR NEXT TIME: Ecological producers have the most harvestable energy. 
If the producers have 7,000,000 units of energy, then the organisms in this trophic level would have 70,000 units of energy

Awesome! If the producers have 7,000,000 units of energy, the 2dary consumers will have 70,000.

HINT FOR NEXT TIME:  Only 10% of the energy is passed from one trophic level to the next. If the producers have 7,000,000 units, then the primary consumers will have 10% of 7,000,000. Take 10% of that and you’ll have your answer. 
The source of all the energy in this ecosystem.

Correct! In almost every ecosystem, the sun is the source the energy.

HINT FOR NEXT TIME: What powers photosynthesis?
If the producers have 7,000,000 units of energy, then the organisms in this trophic level have 7000 units of energy.

Good job. If the producers have 7,000,000 units of energy, then the third level consumers will have 7,000 units of energy.

HINT FOR NEXT TIME: Start with 7,000,000 units. The primary consumers will have 10% of that. The secondary consumers will have 10% of the energy in the primary consumers. How much will be in the tertiary consumers (like the eagle).
Represents the 90% of energy lost between trophic levels.

Excellent. The arrows represent the energy that’s lost between trophic levels.

HINT FOR NEXT TIME. If the thin black arrows represent the energy that’s transferred between trophic levels, then what could represent the energy that’s not transferred?

[q json=”true” hotspot_user_interaction=”label_prompt” show_hotspots=”” dataset_id=”Ecology Click On Challenge|29172abf7733c” question_number=”5″] Survivorship curve

The letter for the survivorship curve of a K-selected species

Nice! “A” is the survivorship curve for a K-selected species.

 HINT FOR NEXT TIME: K selected species tend to live into or past middle age. Most individuals die when they’re old, and few when they’re young.  
The letter for the survivorship curve of an “r-selected” species.

Outstanding! “C” is the survivorship curve for an “r” selected species.

 HINT FOR NEXT TIME: Species that are “r” selected have high mortality among their young; very few individuals survive into old age.
The letter for the survivorship curve that represents constant loss of life.

Superb! “B” represents constant loss of life.

 HINT FOR NEXT TIME: Which line would represent a situation where the loss of life is constant over the life span, as opposed to concentrated at the beginning or the end of the life span.

[q json=”true” hotspot_user_interaction=”label_prompt” show_hotspots=”” dataset_id=”Ecology Click On Challenge|14bd54d91094f6″ question_number=”6″] Population Growth

The letter that represents the most rapid exponential growth phase

Terrific! “B” is rapid exponential growth

 HINT FOR NEXT TIME: You’re looking for the steepest part of the curve.
The letter that represents carrying capacity

That’s right! “E” is carrying capacity.

 HINT FOR NEXT TIME: This is the maximum population size that the environment will allow.
The letter that represents when limiting factors are slowing population growth (but the population is still growing).

Very nice! At point “C,” the N is approaching K, and population growth is slowing.

 HINT FOR NEXT TIME: Find where the slope of population growth is starting to level off.
The letter that represents when the population has reached carrying capacity.

Way to go! At “D” the population has reached carrying capacity

 HINT FOR NEXT TIME: Look for the point when the rate of growth has dropped to zero. 

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[restart]

[/qwiz]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Food chain

 

 

Food web