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Food Web and Energy Pyramid PRACTICE

Posljednje ažuriranje almost 2 years ago

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8

Pitanje 1

1.

Create a food web using the descriptions of the following organisms: (Don't forget the ARROW points to where the energy flows to!)
a. RABBITS eat GRASS and berries from BERRY BUSHES.
b. WOLVES eat rabbits and ground hogs.
c. GROUNDHOGS eat berries and grass.
d. BEARS eat berries and deer.
e. DEER eat grass.
* Do not forget the SUN!

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Pitanje 2

2.

If there is a disease that kills most of the berry bushes, which population of organisms is likely to be affected? How will they be affected and why?

the sun because now it has one less thing for its energy to go into

the rabbits, groundhogs, and bears because their food source is now cut in half

the wolves because they won't have berries to eat anymore

the deer because they can only eat grass now

Pitanje 3

3.

In the food web above, if we were to introduce another predator that eats groundhogs and rabbits, what is likely to happen to the wolf population? Why? (select two)

the wolf population would increase

the wolf population would decrease

because there is now more competition consuming the wolf's prey population

because there will be more ground hogs and rabbits now

Pitanje 4

4.

Which would go here at the bottom of this energy pyramid?

The grass and trees that absorb 2500 kcal of energy from the sun.

Rabbits that eat grass.

Hawks that eat squirrels and rabbits.

Squirrels that eat acorns from oak trees.

Pitanje 5

5.

Which TWO would go here in the middle of this energy pyramid?

Rabbits that eat grass.

The grass and trees that absorb 2500 kcal of energy from the sun.

Hawks that eat squirrels and rabbits.

Squirrels that eat acorns from oak trees.

Pitanje 6

6.

Which would go here at the top of this energy pyramid?

The grass and trees that absorb 2500 kcal of energy from the sun.

Rabbits that eat grass.

Hawks that eat squirrels and rabbits.

Squirrels that eat acorns from oak trees.

Pitanje 7

7.

Which amount of energy would be at the bottom?

250 kcal

2500 kcal

25 kcal

Pitanje 8

8.

Which amount of energy would be in the middle? (Hint: only 10% of energy is transferred from level below it.)

250 kcal

25 kcal

2500 kcal

Pitanje 9

9.

Which amount of energy would be at the top? (Hint: only 10% of energy is transferred from level below it.)

250 kcal

2500 kcal

25 kcal

Pitanje 10

10.

Which trophic level would you call the bottom?

primary consumer

producer

secondary consumer

Pitanje 11

11.

Which trophic level would you call the middle?

primary consumer

secondary consumer

producer

Pitanje 12

12.

Which trophic level would you call the top?

primary consumer

secondary consumer

producer

Pitanje 13

13.

Why are there more herbivores in an ecosystem than carnivores?

Because the herbivores need to get all their energy from the sun.

Because carnivores can't make their own food.

Because there needs to be enough for the carnivores to eat since only 10% of energy is transferred.

Because the producers feed the herbivores.

Pitanje 14

14.

What happens to the energy that is "lost" at each trophic level?

it's lost as heat

it's lost as animals

it's lost as food

Pitanje 15

15.

Why is the disappearance of grass more devastating to the community than the disappearance of hawks? (If the grass goes away, why is that worse than if the hawks go away?)