Biotic Components

The video tutorial explains the biotic components of ecosystems, focusing on living organisms like plants and animals. It compares monarch and swallowtail butterflies to illustrate species differences. The concept of species is defined as a group of organisms that can reproduce among themselves, and a population is a group of the same species in an area. The video also covers communities, which consist of different populations in an area, and natural communities, which include all plants and animals interacting with their environment. Finally, it discusses the variable size of ecosystems, from small tidal pools to large mountain ranges, using a hemlock forest as an example.

What distinguishes a monarch butterfly from a swallowtail butterfly?

• They belong to different species.

• They migrate to different regions.

• They live in different ecosystems.

• They have different diets.

What is a group of the same species living in the same area called?

• Habitat

• Population

• Ecosystem

• Community

Which of the following is an example of a community?

• All living organisms in a forest

• Alligators in a wetland

• A tidal pool

• A single water lily

How do ecologists typically refer to natural communities?

• By their location

• By their dominant species

• By their size

• By their biodiversity

What is the main difference between a natural community and an ecosystem?

• Ecosystems are only found in forests.

• Natural communities are larger.

• Ecosystems include non-living components.

• Natural communities are more diverse.