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Tues 1/5: Food Webs and Energy Flow

Last updated almost 5 years ago

11 questions

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Question 1

1.

If a bird eats a mouse that eats grass, the bird is a(n)

producer.

second-level consumer.

first-level consumer.

decomposer.

Question 2

2.

Which of the following shows a correct food chain?

plants >decomoposers>raccoons>ospreys

insects>fish>decomposers>ospreys

plants>insects>fish>decomposers

fish>osprey>raccoons>decomposers

Question 3

3.

The first organism in a food chain is typically a(n)

consumer.

herbivore.

carnivore.

producer.

Question 4

4.

In an energy pyramid, which level has the most available energy?

producer level

first-level consumer level

second-level consumer level

third-level consumer level

Question 5

5.

The many overlapping food chains in an ecosystem make up a(n)

food web.

niche.

energy pyramid.

feeding level.

Question 6

6.

The movement of energy in an ecosystem can be shown by an energy pyramid. An energy pyramid shows the amount of energy available at each level of a food chain. A food chain is made up of grain plants, mice, snakes, and hawks. Which of the following diagrams correctly represents the energy available at each level in this food chain? [https://www.quia.com/files/quia/users/jpaydo/energy-pyramid.jpg]

A

B

C

D

Image for Question 7

Question 7

7.

What most likely caused the rabbit population to decrease during the first month shown in the graph above?

A disease in the population of rabbits

A decreasing population of grasses

An increasing population of hawks

A higher-than-ideal population of snakes

Image for Question 8

Question 8

8.

In one or two sentences, please summarize what the graph is telling you about gazelles and lions. (The Y-axis is the "Number of Individuals" in that ecosystem). Use specific numbers to add detail to your summary.

Image for Question 9.

Question 9

9.

Looking at the model above, if the hawks are increased, what will happen to the grass? Please explain your reasoning.

Question 10

10.

Describe the role of decomposers in an ecosystem.

Question 11

11.

After our lessons on food chains, predator-prey relationships (graphs) and videos in class, name and describe one way you could increase biodiversity in an ecosystem.