Question

1. which group of organisms is missing from the food web shown in the passage?

a. predators
b. producers
c. consumers
d. decomposers

1. an energy pyramid is a diagram used to show how energy flows through a food

chain and how energy decreases at each level.
which answer lists the categories of organisms from the greatest amount of
energy to the least amount of energy moving up the energy pyramid?
a. producers, tertiary consumers, secondary consumers, primary consumers
b. primary consumers, secondary consumers, tertiary consumers, producers
c. producers, primary consumers, secondary consumers, tertiary consumers
d. tertiary consumers, secondary consumers, primary consumers, producers

1. wolves prey heavily on beavers in a temperate forest ecosystem. the diet of

beavers consists of the leaves, branches and bark from trees, as well as many
types of aquatic vegetation. in this relationship, what is the role of the wolves?
a. producer
b. decomposer
c. primary consumer
d. secondary consumer

Explanation:

• Question 7: In a food web, producers (like plants) are the base. Consumers eat producers or other consumers. Decomposers break down dead organisms. Predators hunt other organisms. Since the question asks which group is missing, and in a typical food web, decomposers are often a key component that can be "missing" if not listed (assuming the other options are more commonly part of the main trophic levels in a simple food - web description).
• Question 8: Energy pyramids have the most energy at the producer level. As we move up the pyramid (from producers to primary consumers, then secondary, then tertiary), energy decreases. Producers, primary consumers, secondary consumers, tertiary consumers is the correct order where energy decreases at each level.
• Question 9: Beavers eat aquatic vegetation (producers). Wolves prey on beavers. In the trophic level system, if beavers are primary consumers (eating producers), then wolves, which eat primary consumers (beavers), are secondary consumers.

Answer:

1. D. decomposers
2. B. producers, primary consumers, secondary consumers, tertiary consumers
3. D. secondary consumer