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Ecosystems

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Questions and Answers

What is the term for the scientific study of interactions among organisms and between organisms and the environment?

Ecology

What is the collective term for all the areas on the planet where life exists, including land, water, and atmosphere?

Biosphere

What is the term for a group of organisms that can breed and produce fertile offspring?

Species

What is the term for a collection of all organisms that live in a particular place together with their nonliving environment?

Ecosystem Signup and view all the answers

What are the two types of factors that determine the survival and growth of an organism and the productivity of the ecosystem?

Biotic and Abiotic Factors Signup and view all the answers

How does temperature affect the speed of chemical reactions in cells?

As temperature increases, the rate of reaction also increases. Signup and view all the answers

What is the effect of light intensity on plant growth?

An increase in light intensity can increase the growth rate of plants. Signup and view all the answers

What is the importance of water in cells?

Water is essential for all living organisms and is the solvent for all materials in cells, allowing numerous chemical reactions to occur. Signup and view all the answers

What is the impact of fire on plant growth?

Fire can control the growth of plants and trees and improve the growth of plants as they grow quickly after fire. Signup and view all the answers

What is the role of loam soil in plant nutrition?

Loam soil usually contains more plant nutrients than sandy soil because the clay particles in loam have more plant nutrients in them than sand grains do. Signup and view all the answers

How does temperature affect the amount of dissolved oxygen in water?

There is more dissolved oxygen in cold water than warm water. Signup and view all the answers

What is the function of autotrophs in an ecosystem?

Autotrophs produce all of the food that heterotrophs eat by using energy in sunlight to convert water and carbon dioxide into glucose. Signup and view all the answers

What is the impact of oxygen levels on aquatic organisms?

Oxygen levels affect the energy available for respiration, and limited oxygen can lead to reduced energy availability for aquatic organisms. Signup and view all the answers

How does fire affect seed dispersal in some plants?

Some plants flower better after a fire and drop their seeds. Signup and view all the answers

What is the role of water in chemical reactions?

Water is essential for chemical reactions, allowing chemicals to move and participate in reactions. Signup and view all the answers