Unit 9 Ecology Pre-Assessment

All of the following are abiotic factors of a habitat except

• soil

• plants

• water

• weather

Biodiversity measures the number of species living within a(n)

• ecosystem

• organism

• niche

• symbiosis

The process shown in the diagram is known as

• competitive exclusion

• succession

• symbiosis

• competition

Succession is

• an organism’s ability to survive in its environment

• the number of species living in an ecosystem

• the regular progression of species replacement in an environment

• the transfer of energy through a food chain

A relationship between a producer and consumer is best illustrated by a

• snake eating a bird

• fox eating a mouse

• lion eating a zebra

• zebra eating grass

The photosynthetic algae are

• producers

• consumers

• parasites

• decomposers

Killer whales feed at the

• first and second trophic levels

• second trophic level only

• second and third trophic levels

• third and fourth trophic levels

Level A is composed of

• carnivores

• herbivores

• producers

• omnivores

How much energy is available to the organisms in level C?

• all of the energy in level A plus the energy in level B

• all of the energy in level A minus the energy in level B

• 10 percent of the energy in level B

• 90 percent of the energy in level B

Nitrogen is a component of

(think back to CHO, CHO, CHON, CHONP)

• protein

• fats

• carbohydrates

• water