3.3 Study guide

Question 1

Def of Tropic levels

Answer 1

Level in an ecosystem and an organisms position it occupies in the food web.

Question 2

Def of Autotroph

Answer 2

An organism that can produce its own food. Using light, water, and carbon dioxide. These are normally called producers.

Question 3

Def of Heterotroph

Answer 3

an organism that cannot produce it’s own food taking nutrition from other sources. These are normally secondary, primary, and tertiary consumers.

Question 4

Herbivore vs. Omnivore vs. Carnivore vs. Detritivore

Answer 4

A herbivore is an animal that feeds on plants, and omnivore is an organisms that eats both plants and animals, a carnivore is an organism that only eats on animals/ flesh, and a detritivore is an organism that feeds on dead organic material.

Question 5

Describe differences between food web and trophic cascade diagrams

Answer 5

The difference between a food web and a cascade diagram is that 1 the cascade diagram shows if its indirect or direct impact on an organism and if they are benefiting or not benefiting the organism. A food web only shows that energy and the animals that other organisms feed on.

Question 6

Identify trophic levels of organisms in a food web

Answer 6

Level 1 you will find herbivores in the food web, level 1 and higher you will find omnivores, and levels 2 and above you will find carnivores.

Question 7

Make predictions using a trophic cascade model