Energy Flow and Ecosystem Interactions

The video tutorial covers ecology, focusing on how organisms interact with their environment and each other. It explains the levels of organization from atoms to the biosphere, differentiates between biotic and abiotic factors, and discusses autotrophs and heterotrophs. The tutorial also covers food chains and webs, energy flow, and matter cycles. It distinguishes between weather and climate, explains niches, and describes symbiotic relationships and ecological succession.

What is the study of how organisms interact with their environment and each other called?

• Chemistry

• Geology

• Biology

• Ecology

Which of the following is NOT a biotic factor?

• Sunlight

• Deer

• Frog

• Fern

What process do most autotrophs use to make their own food?

• Photosynthesis

• Chemosynthesis

• Respiration

• Fermentation

Which type of consumer only eats plants?

• Scavenger

• Omnivore

• Herbivore

• Carnivore

In a food chain, what is the primary role of a producer?

• To produce energy from sunlight

• To decompose organic matter

• To consume other organisms

• To scavenge for food

How does energy flow in a food chain?

• In one direction

• Randomly

• In multiple directions

• In a cycle

What is the role of bacteria in the nitrogen cycle?

• To release nitrogen gas into the atmosphere

• To consume nitrogen

• To fix nitrogen gas into a usable form

• To produce nitrogen gas

What is the main difference between weather and climate?

• Weather is predictable; climate is not

• Weather is short-term; climate is long-term

• Weather is long-term; climate is short-term

• Weather is constant; climate changes daily

Which type of symbiotic relationship benefits one species while the other is unaffected?

• Competition

• Commensalism

• Parasitism

• Mutualism

What is primary succession?

• The cycle of matter in an ecosystem

• The development of a climax community

• The regrowth of an ecosystem after a fire

• The establishment of an ecosystem on bare rock