Chapter 3.2 Bio

Which of the following would have the greatest impact on the food web if it were removed?

• rabbit
• oak tree
• chipmunk
• deer

Food provides animals with the materials and energy they need for growth, warmth, and motion. Plants get material for growth mostly from air and water, and obtain energy from sunlight. Producers provide food to consumers because ___.

• plants can easily make food from soil and water
• animals cannot produce their own food
• plants are more abundant in ecosystems
• many animals prefer eating plants to eating meat

The Houston Toad's habitat was destroyed. The loss of habitat for the Houston Toad most likely affected the food web by ___.

• causing an increase in the number of opossums
• causing a decrease in the number of armadillos
• causing an increase in the number of insects
• causing a decrease in the number of wildflowers

In addition to producers and consumers, healthy communities must have ________, bacteria and fungi which recycle detritus.

•  autotrophs
• decomposers
• spontaneous combustion
• viruses

Humans are considered to be _____ consumers because we eat carnivores, omnivores, herbivores, and producers.

• primary
• tertiary
• secondary
• quaternary

When two organisms live in a close association, and both benefit, the relationship is called _______.

• commensalism
• symbiosis
• parasitism
• pathogenesis

___________ are comprised of ____________ which are groups of interbreeding individuals of the same species.

• Communities, populations
•  Populations, herds
• Communities, families

In a community, producers are _____ which convert light energy to chemical energy in a process called _______.

• heterotrophs, photosynthesis
• autotrophs, photosynthesis
• heterotrophs, respiration
•  autotrophs, respiration

Which of the following is the definition for a food web?

• A system of interlocking and interdependent food chains.
• A system of different food
• A living thing that feeds on waste and remains of dead animals.
• Only eats meat.

What is a process where producers use chemical energy in matter to make food?

• chemosynthesis
• energy conversion
• fixation
• photosynthesis