Biotic And Abiotic Factors In Ecosystems

In this video, Mr. J explains the biotic and abiotic factors that make up ecosystems. Biotic factors are living or once-living entities like plants, animals, fungi, and bacteria. Abiotic factors are nonliving elements such as rocks, water, sunlight, temperature, and sand. The video provides examples of each and discusses their roles in ecosystems. It concludes with a classification exercise to determine whether certain items are biotic or abiotic.

What is an ecosystem composed of?

• Only nonliving factors

• Neither living nor nonliving factors

• Both living and nonliving factors

• Only living factors

Which of the following is considered a biotic factor?

• Sand

• Water

• Sunlight

• Bacteria

Which of these is not a biotic factor?

• Rocks

• Trees

• Mushrooms

• Praying mantis

Which of the following is an abiotic factor?

• Bacteria

• Temperature

• Fungi

• Animals

What role do abiotic factors play in an ecosystem?

• They are not important

• They are crucial for the survival of living things

• They are only decorative

• They only affect nonliving things

Which of the following is an example of a nonliving factor?

• Praying mantis

• Sunlight

• Mushrooms

• Bacteria

Is air considered a biotic or abiotic factor?

• Both

• Abiotic

• Neither

• Biotic

A dead tree is classified as which type of factor?

• Neither

• Biotic

• Both

• Abiotic

What category does a starfish fall under?

• Neither

• Biotic

• Abiotic

• Both