Ch. 3 - The Biosphere Test Review

The branch of biology that deals with interactions among organisms and between organisms and their environment is called

• Evolution
• Ecology
• Systematics
• Taxonomy

Which of the following sequences accurately describes the levels of organization in ecology from smallest to largest?

• Community, population, biome, ecosystem, biosphere
• Biome, community, ecosystem, population, biosphere
• Population, community, ecosystem, biome, biosphere
• Biosphere, biome, ecosystem, community, population

The original source of almost all the energy in ecosystems on earth is

• Carbohydrates
• Water
• Heat
• Sunlight

Plants, algae, and some photosynthetic bacteria (prokaryotes) are

• Omnivores
• Autotrophs
• Heterotrophs
• Decomposers

All of the interconnected feeding relationships that form a network of complex interactions among organisms in an ecosystem are called a(n)

• Interaction
• Food Chain
• Food Web
• Community

What is the term for each step in the transfer of energy and matter within a food web?

• Energy path
• Food chain
• Trophic level
• Food pyramid

A bird stalks, kills, and eats an insect. Based on its behavior, which ecological terms describe the bird?

• Herbivore, decomposer
• Heterotroph, carnivore
• Heterotroph, producer
• Autotroph, carnivore

Only 10 percent of the energy stored in an organism can be passed on to the next trophic level. The other 90 percent is

• Used to hunt
• Lost as heat
• Stored as fat
• Reflected

What is the process by which soil bacteria convert nitrogen gas in the air to ammonia or other nitrogen-containing compounds?

• Excretion
• Decomposition
• Nitrogen fixation
• Photosynthesis

In this energy pyramid, how much energy is available to the bass?

• 10 kcal
• 100 kcal
• 1,000 kcal
• 10,000 kcal