Ecology Test - Part 1

The branch of biology dealing with interactions among organisms and between organisms and their environment is called:

• Economy

• Botany

• Chemistry

• Ecology

Which of the following descriptions about the organization of an ecosystem is correct?

• Communities make up species, which make up populations.

• Populations make up species, which make up communities.

• Species make up communities, which make up populations.

• Species make up populations, which make up communities.

The simplest grouping of more than one kind of a single organism in the biosphere is:

• population

• an ecosystem

• A community

• a species

The algae at the beginning of the food chain in the picture above are:

• Primary consumers

• Decomposers

• Primary Producers

• Heterotrophs

Which of the following organisms does NOT require sunlight to live?

• Chemosynthetic bacteria found around hydrothermal vents in the deepest parts of the ocean.

• Algae forming on the surface of warm, water on the Gulf of Mexico.

• Trees

• Photosynthetic bacteria

In what way are herbivores and carnivores alike?

• They both use photosynthesis to make their own food.

• They both obtain energy by consuming other organisms.

• They both directly consume producers.

• They both are considered to be autotrophs.

A model of complex feeding interactions among multiple organisms in a community is called a:

• Food Web

• Ecosystem

• Food Chain

• Population

A lion stalks, kills, and eats a buffalo. Based on its behavior, which pair of ecological terms describes the lion?

• Herbivore, decomposer

• Producer, heterotroph

• Carnivore, consumer

• Autotroph, herbivore

What goes in Box 5 of the food web above?

• Herbivores

• Carnivores

• Producers

• Decomposers

Which is a biotic factor that affects the size of the population of buffalo in the Serengeti? (Note: you should know what the prefix bio- means.)

• Average temperature

• Type of Soil

• Number and kinds of predators

• Concentration of oxygen