Ecosystems: Biotic and Abiotic Factors

What is a biotic factor in an ecosystem?

• A weather condition

• A chemical element

• A living or once-living component

• A non-living component

Which of the following is an example of an abiotic factor?

• A tree

• A fish

• Sunlight

• A bird

Which of these is a man-made biotic factor?

• A nylon shirt

• A glass container

• A wooden bridge

• A metal bridge

How do biotic factors interact in an ecosystem?

• By altering chemical compositions

• By changing weather patterns

• By affecting sunlight levels

• By consuming each other for survival

What role do abiotic factors play in an ecosystem?

• They are consumed by plants

• They determine the living conditions

• They are used for building shelters

• They provide food for animals

What is a common misconception about biotic factors?

• They are only animals

• They are always plants

• They must be alive

• They can be dead or part of a living thing

Why might a cactus not survive in a rainforest?

• It needs more sunlight

• It requires more soil nutrients

• It requires less water

• It needs colder temperatures

Which of the following is a chemical abiotic factor?

• Water

• Temperature

• Sunlight

• Carbon dioxide

What adaptation might a shark need to survive in Arctic waters?

• More blubber

• Less blubber

• More fins

• Less fins

How does the amount of sunlight affect an ecosystem?

• It determines the types of animals

• It changes the soil composition

• It alters the water cycle

• It affects the types of plants that can grow