Science review

Any living thing is considered to be a(n)

Organisms!

Describe how energy flows through an ecosystem.

The sun gives energy to producers.Primary consumers eat producer 10% of the energy passed along.Secondary consumers eat primary consumers only 10% of the available energy is passed along again.

If seals eat krill that feed on algae, which level in the pyramid below would seels occupy?

D polar bears C seals B krill A algae

Where is the most available energy represented on an energy pyramid?

PRODUCER

True or false: The predator in a food web may be in more than one food chain because food webs show more feeding options.

TRUE!

fill in the blank As you move up an energy pyramid there is___________energy available.

web

A bearded dragon is an omnivorous type of lizard that feeds on leafy greens and primary consumers such as mealworms and crickets.

secondary consumer

A mole is a carnivore that feeds on worms, ants, grubs, beetles, and other insects.

secondary consumer

A lion is a carnivore that feeds on antelopes, zebras, and wildebeests.

tertiary consumer

A killer whale is a carnivore that feeds on seals, sea birds, squid, sea turtles, and certain sharks.

tertiary consumers

Can a predator from one food chain be linked to the prey of another food chain?

yes

How are food chains and food webs different?

A food chain outlines who eats whom.A food web is all of the food chains in an ecosystem.

A diagram that shows the amount of energy that moves from one feeding level to another is referred to as to an energy pyramid.

An energy pyramid!

A series of events in which one organism eats another in order to obtain energy:

Food chain!

A system of many overlapping food chains:

Food web!

The grasshopper population within an ecosystem suddenly experiences a large decrease in numbers. How would a significant decrease in the grasshopper population affect the ecosystem?

If the grasshopper population suddenly deceased.The organism that feed on it will decrease as well.The decline in the population of these organisms would likely affect the next level of the food chain .The producers population would increase due to the lack of grasshoppers to feed on them.

How do producers and consumers depend on each other? Explain your answer.

Producers provide food for primary consumers which helps support higher level consumers as well.Consumer help to maintain the producer population so it does not overpopulate.

An organism that can be either a carnivore or omnivore that feeds on primary consumers:

Secondary consumer!

Briefly compare and contrast food chains and food webs. Identify at least 2 similarities and 3 differences

Similarities:represent who eats; 10% of available energy is passed along, arrow shows energy being passed on. Food chain: shows only a single pathway of energy flow, one arrow to each organisms, each organisms represent one tropic level. Food Web: show multiple pathways of energy flow, multiply arrows to each organisms, each organism represents multiply trophic levels, more complex and realistic representations of the relationship in the ecosystem.

Give an example of a food chain using sun, mouse, owl and grass

Sun, grass, mouse, owl

A carnivore at the top-most level in a food chain that feeds on secondary consumers:

Tertiary consumer!

What do the arrows in a food chain or food web represent?

The arrows on a food chain indicates where energy is being passed from one tropic level.

An organism that obtains energy from the sun through the process of photosynthesis:

and producer!

fill in the blank A_________________________is a more realistic diagram of the relationships that occur in an ecosystem.

food web

fill in the blank A________________________generally contains many more organisms than a food chain.

food web

Is it possible for a food chain to have an infinite number of links?

no!

fill in the blank If all the grass in an ecosystem becomes diseased then all of the_______________that feed on the grass will be affected.

organisms

A deer is an herbivore that feeds mainly on grasses, leaves, fruits and corn.

primary consumer

A rabbit is an herbivore that feeds on hay, oats and vegetables.

primary consumer

An herbivore that feeds on producers in order to obtain energy is an example of:

primary consumer!