Symbiotic Relationships, Food Webs, & Energy Pyramid

Food Webs, Energy Flow, & Symbiotic Relationships

Multiple Choice

The clownfish keeps the anemone's predators away with special cells that send out an electric shock. The anemone gives the clownfish a safe home.

• mutualism

• commensalism

• parasitism

• predator-prey

Multiple Choice

Warthogs lie down when mongoose are near. The mongoose crawl on top of the warthogs and inspect the fur for ticks. The mongoose devour any tick they find. The warthogs enjoy this immensely!

• mutualism

• commensalism

• parasitism

• predator-prey

Multiple Choice

Barnacles attach themselves to whales. Not only do the barnacles get protection from predators, but they get a free meal. As the whales swim and consume plankton, the barnacles eat the plankton that swims by. The whales don't notice the freeloaders.

• mutualism

• commensalism

• parasitism

• predator-prey

Predation

• One animal becomes the resource (food) for another animal.

• Predator- Animal who eats another animal

• Prey- Animal that gets eaten

• Helps control the size of a population

Multiple Choice

One organism hunts and eats another organism.

• predation

• mutualism

• carnivore

• parasitism

Multiple Choice

A 3-point buck is killed by a hunter. What type of symbiotic relationship is this?

• mutualism
• commensalism
• parasitism
• predation

Competition

• Organisms are competing for resources

• Can be a competition with members of the SAME species or with members of a DIFFERENT species that use the same resource

Multiple Choice

Competition in an ecosystem occurs when

• animals get bored.

• more than one individual or population in an ecosystem relies (needs) the same limited resource.

• there is more than enough of a resources for every living organism.

• resources are unlimited.

Multiple Choice

I am the struggle that takes place among organisms for food, water, and others needed to live. 

• competition
• decomposer
• energy pyramid
• producer

Producer

Also known as an autotroph.

Makes its own food.

Multiple Choice

What is another word for a producer?

• Animal

• Heterotroph

• Autotroph

• Bug

Photosynthesis

Chemical Reaction that plants/producers/autotrophs use to make food.

Consumers

Anything that consumes or eats food to get energy.

Also known as a heterotroph.

Multiple Choice

What is another word for a consumer?

• heterotoph

• plant

• producer

• autotroph

Decomposers

Eat dead organisms.

Will eat dead plants or animals and return the nutrients back to the Earth.

Fungus and bacteria are the main examples.

Food web

• Show more interactions than in a food chain.

• Usually leaves out decomposers.

• Show the flow of energy in an ecosystem.
  
  

Energy in a food web

How much energy a consumer gets depends on which organism they are eating.

If they are eating primary consumer, they are getting more energy from that trophic level than if they ate something that was a secondary consumer.

Energy pyramid

• Shows two things:

• 1. It compares the population of each trophic (energy) level

• 2. It shows the amount of energy in each trophic level.

Trophic levels

Only 10% of the energy of each trophic level actually makes it to the next level.

The other 90% is lost as heat to the environment.

Multiple Choice

What's another word for trophic?

• warm weather

• biome

• energy

• joules

Multiple Choice

How much energy gets moved to the next trophic level?

• 100%

• 10%

• 90%

• .1%

Multiple Choice

The source of energy for all ecosystems is

• producers

• the sun

• water

• consumers

Multiple Choice

Squirrels eat nuts, seeds and berries. They are

• herbivores

• omnivores

• carnivores

Multiple Choice

Mice eat seeds, nuts and berries they belong in which TROPHIC level on an energy pyramid?

• Level 1: Producers

• Level 2: Primary consumers

• Level 3: Secondary consumers

• Level 4: Tertiary consumers

Multiple Choice

As you go up a food chain, food web or energy pyramid, energy

• increases

• decreases

Multiple Choice

Which of these is a decomposer?

• rats

• tree roots

• bacteria