ed215- trophic levels

8/2/2019 Ed215- Trophic Levels

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Ms. Dlugi04/19/12


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Describe the difference between a producerand a consumer. Give examples.

Explain the relationship between trophiclevels, food chains, and food webs.

Summarize the different types of consumers.(There are five) Use Page 409.


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PRODUCER:

- Make own food

- Energy from non-livingresources Another word?- Autotroph Give an example:- Plants

CONSUMER:

- Get energy by consuming

- Eat living and once-livingresources Another word?- Heterotroph Give an Example:- US!


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- Trophic levels are the levels of nourishment ina food chain.

- Food chains link feeding relationships.- Food webs are networks of food chains.


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Herbivores- eat only plants

Carnivores- eat only animals Omnivores- eat both plants and animals Decomposers- break down organic matter into simpler

compounds


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1. Students will be able to understand that allorganisms must obtain energy in order to survive, anddo so in different ways.

2. Students will be able to describe the differencebetween producers, types consumers, and also be ableto relate them to trophic levels in food webs.

3. Students will be able to learn how energy availabledecreases as trophic levels increase.

4. Students will be able to create their own food webswith their comprehension of Chapter 13.3 and 13.4

vocabulary terms.


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First Trophic Level:- Producer

Second Trophic Level:- Primary Consumer Third Trophic Level:- Secondary Consumer Highest Trophic Level:- Tertiary Consumers


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Energy Amount:

100.0 10.0 1.0 0.1 0.01

10% 10% 10% 10%


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Due 04/23/12, Monday. Follow the Rubric attached.

Rest of the class period to work. Questions?!


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1. In this food web, the trophic level with theleast energy includes which of the following

organisms?

A. GrassesB. MiceC. SnakesD. Hawks


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A caterpillar eats an oak leaf. Which of the followingbest describes the energy transfer in this situation?

A. Both the caterpillar and the leaf gain energy.

B. Energy is transferred from the leaf to the caterpillar.

C. Decomposers in the leaf obtain energy from thecaterpillar

.

D. The oak tree gains energy when the caterpillar eatsthe leaf.


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Which of the following lists identifies organismsthat are producers in food webs?

A. mushrooms, bacteria, earthworms

B. algae, ferns, sunflowers

C. termites, red foxes, shrews

D. woodpeckers, cardinals, grasshoppers


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Which of the following would most likely happen if grassesand shrubs were removed from a rural Massachusettsecosystem?

A. There would be an increase in consumers in the

ecosystem.

B. There would be an increase of photosynthesis in theecosystem.

C.

There would be a decrease in food energy produced bythe ecosystem.

D. There would be a decrease of carbon dioxide available tothe ecosystem.

ed215- trophic levels

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