Ecology Concepts Review

This video tutorial by Miss Hamill covers the 11th unit on ecology, focusing on levels of organization, food chains and webs, decomposers and scavengers, biogeochemical cycles, ecological succession, population dynamics, and various biomes. It explains how energy is transferred in ecosystems, the role of decomposers, nutrient cycling, and the processes of primary and secondary succession. The video also discusses population growth factors and the characteristics of different biomes, including tropical rainforests, deserts, grasslands, and aquatic ecosystems.

What is the smallest level of organization in ecology?

• Population

• Organism

• Community

• Ecosystem

Which of the following best describes a food web?

• A single path of energy flow

• A diagram showing only producers and consumers

• A complex network of feeding relationships

• A linear sequence of who eats whom

What is the primary role of producers in a food chain?

• To recycle nutrients back into the soil

• To decompose organic matter

• To make their own food through photosynthesis or chemosynthesis

• To consume other organisms

How much energy is typically transferred from one trophic level to the next?

• 1%

• 25%

• 50%

• 10%

What is the main difference between a decomposer and a scavenger?

• Decomposers eat dead organisms, while scavengers eat living organisms

• Decomposers secrete enzymes to break down food, while scavengers consume food directly

• Decomposers are always fungi, while scavengers are always animals

• Decomposers recycle nutrients into the air, while scavengers recycle nutrients into the soil

Which cycle involves the process of cellular respiration?

• Water cycle

• Sulfur cycle

• Carbon cycle

• Nitrogen cycle

What is primary succession?

• The growth of a forest in an area that previously had no life

• The development of a forest after a disturbance

• The replacement of one species by another in an ecosystem

• The increase in population size due to unlimited resources

What is carrying capacity?

• The total number of species in an ecosystem

• The minimum number of organisms needed for a population to survive

• The maximum number of organisms an environment can support

• The average number of organisms in a population

Which biome is characterized by long cold winters and short cool summers?

• Tropical rainforest

• Grassland

• Desert

• Taiga

What adaptation helps desert plants survive with little water?

• Large leaves to capture sunlight

• Ability to store water

• Thick blubber

• Broad hoofs to walk on snow