Ecosystem Roles and Relationships

The video provides a comprehensive review of topic four, focusing on how organisms interact within ecosystems. It covers the concepts of biotic and abiotic factors, roles in ecosystems such as niches, producers, and consumers, and explains food chains and energy flow. The video also introduces food webs, the pyramid of numbers, and clarifies the roles of scavengers and decomposers.

What term is used to describe non-living components of an ecosystem?

• Inorganic

• Organic

• Abiotic

• Biotic

Which of the following is a producer in an ecosystem?

• Mouse

• Rabbit

• Grass

• Hawk

What is the primary role of consumers in an ecosystem?

• To produce energy

• To consume other organisms for energy

• To decompose dead material

• To provide shelter

Which type of consumer only eats plants?

• Scavenger

• Herbivore

• Omnivore

• Carnivore

What is the term for animals that eat both plants and meat?

• Carnivores

• Herbivores

• Decomposers

• Omnivores

What does a food chain illustrate?

• The climate of an ecosystem

• The flow of energy between organisms

• The number of organisms in an ecosystem

• The types of habitats in an ecosystem

How does a food web differ from a food chain?

• It only includes consumers

• It only includes producers

• It shows a complex network of food chains

• It is a linear sequence

What does the Pyramid of Numbers represent in an ecosystem?

• The climate conditions

• The types of species

• The number of organisms at each level

• The energy flow

Which of the following is a scavenger?

• Grass

• Vulture

• Mushroom

• Snake

What role do decomposers play in an ecosystem?

• They provide shelter

• They break down dead material

• They consume other organisms

• They produce energy