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FEU High School Earth and Life Science AY 23-24 Lesson 13: Interaction and Interdependence

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Questions and Answers

What is the main characteristic of life in an ecosystem according to the text?

Egalitarian sharing of resources
Indifference towards resources
Competition for limited resources (correct)
Cooperation for unlimited resources

Which of the following are resources organisms compete for in communities?

Sound waves and plastic materials
Radioactive material and wind
Metallic material and artificial light
Sunlight and mineral nutrients (correct)

What do organic materials, sunlight, and mineral nutrients provide to organisms in an ecosystem?

Physical structure of organisms
Chemical elements and air
Energy for living processes and matter for physical structures (correct)
Mechanical strength and heat

The theory of natural selection is characterized by:

Competition for limited resources (C) Signup and view all the answers

Which of the following best describes the concept of biotic potential?

Capacity of organisms to increase in number under optimal environmental conditions (A) Signup and view all the answers

What do the different terrestrial and aquatic ecosystems do in relation to one another?

Interlink with one another (C) Signup and view all the answers

What is an ecosystem?

A community of living organisms and their interactions with the nonliving environment (D) Signup and view all the answers

Which condition must be met for an ecosystem to support itself and remain stable?

Constant supply of energy, presence of producers, and recycling of materials (C) Signup and view all the answers

What is the biosphere composed of?

All ecosystems together (A) Signup and view all the answers

What is primary productivity in an ecosystem?

The result of energy captured by producers (A) Signup and view all the answers

How is the flow of energy in an ecosystem described?

One-way flow that is not recycled (D) Signup and view all the answers

What does an ecosystem consist of?

The living and nonliving components interacting together (C) Signup and view all the answers

What are populations at the biological level?

Include all the members of a species in a given area (B) Signup and view all the answers

What do ecosystems involve important interactions between?

Living organisms and the environment (B) Signup and view all the answers

What determines which organisms can exist within a particular area?

The latitude, amount of rainfall, topography, and available species (D) Signup and view all the answers

What is required for ecosystems to persist?

Continual capture of the sun's energy by autotrophs (B) Signup and view all the answers

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