Science 8 Unit Quiz_Ecosystems

A _________ is a simple representation of how energy is being transferred across a series of organisms in the form of food using arrows.

• food web

• food chain

• food pyramid

• energy pyramid

The FIRST TROPHIC LEVEL is occupied by __________.

• primary consumers

• secondary consumers

• tertiary consumers

• producers

Producers are also known as _________.

• detritivores

• saphrophytes

• autotrophs

• heterotrophs

Autotrophs can produce their own food from inorganic raw materials such as light, carbon dioxide, and water through a process called __________.

• Catabolism

• Photosynthesis

• Digestion

• Decomposition

Organisms at higher trophic levels are called ____________. They depend directly or indirectly on plants as their source of energy.

• consumers

• producers

• scavengers

• decomposers

Consumers are also known as ____________.

• autotrophs

• heterotrophs

• detritivores

• decomposers

Multiple, interlinked food chains is called a ___________.

• Food train

• Food web

• Food Pyramid

• Food chain

In both food chain and food web the arrow points to ____________.

• the one who is hungry

• the one being eaten

• the one who eats

• the one who is in love

BASAL SPECIES also refer to ______________.

• plants

• herbivores

• omnivores

• carnivores

Study the food web. Which of the following is a primary consumer?

• deer

• snake

• frog

• eagle