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KEY CONCEPT: Food chains and food webs model the flow of energy in an ecosystem.

ID: 273472 • Letter: K

Question

KEY CONCEPT: Food chains and food webs model the flow of energy in an ecosystem. Choose the correct term from the box below to fit each description herbivore secondary consumer detritivore decomposer trophic levels carnivore omnivore primary consumer tertiary consumer 7. I eat only plants. I am a(n) 8. I eat only other animals. I am a(n) 9. I eat both plants and animals. I am a(n) 10. I eat dead organic matter. I am a(n) 11. I break down organi c matter into simpler compound s. I am a(n) 12. I am the first consumer above the producer level. I am a(n) 13. I am a carnivore that eats herbivores. I am a(n) 14. I am a carnivore that eats other carnivores. I am a(n) 15. The levels of nourishment in a food chain are called 16. How is a food web different from a food chain? 17. Label the four tiers of the energy pyramid with the correct trophic level (producers, primary consumers, secondary consumers, and tertiary consumers). Choose an ecosystem. Research what types of plants and animals live in your chosen ecosystem. Fill in the energy pyramid with what might exist with that ecosystem.

Explanation / Answer

7. I eat only plants. I am a Herbivore

8. I eat only other animals. I am a Carnivore

9. I eat both plants and animals. I am an Omnivore

10. I eat dead organic matter. I am a detritivore

11. I break down organic matter into simple compounds. I am a Decomposer

12. I am the first consumer above the producer level. I am a Primary consumer

13. I am a carnivore that eats other herbivores. I am a Secondary consumer

14. I am a carnivore that eats other carnivores. I am a Tertiary consumer

15. The levels of nourishment in a food chain are called Trophic level

16. How is a food web different from a food chain? A food chain is more specific as it shows only one path of energy whereas food web shows many paths.

17. Example 1:

Ecosystem selected: Tropical rain forest ecosystem

Tertiary consumers: Energy 0.1%- Ex. The Jaguar

Secondary consumers: 1% energy- Ex. The mountain Gorilla

Primary consumers: 10% energy- Ex. Grubs

Producers: 100% Energy- Ex. Bamboo

It should be remembered that detrivores and decomposers feed at each level of the denergy pyramid

SECOND EXAMPLE:

Ecosystem selected: Desert ecosystem

Tertiary consumers: Energy 0.1%- Ex. Sidewinders

Secondary consumers: 1% energy- Ex. Jerboa, snakesa and scorpions

Primary consumers: 10% energy- Ex. Camels, Gazelles, Kangaroo rats, rabbits etc

Producers: 100% Energy- Ex. Scattered plants and Xerophytes