Ecosystem

Question 1

The study of how organisms interact with one another and with their physical environment.

Answer 1

Ecology

Question 2

An expert in or student of ecology.

Answer 2

Ecologist

Question 3

A biological community of interacting organisms and their physical environment.

Answer 3

Ecosystem

Question 4

Physical rather than biological; not derived from living organisms. (non- living)

Answer 4

Abiotic

Question 5

Relating to or resulting from living organisms. (living)

Answer 5

Biotic

Question 6

A group of interdependent plants or animals growing or living together in natural conditions or occupying a specified habitat.

Answer 6

Community

Question 7

An individual animal, plant, or single-celled life form.

Answer 7

Organism

Question 8

A community of animals, plants, or humans among whose members interbreeding occurs.

Answer 8

Population

Question 9

A group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding.

Answer 9

Species

Question 10

Breed or cause to breed with another of a different race or species.

Answer 10

Interbreed

Question 11

Able to conceive young or produce seed.

Answer 11

Fertile

Question 12

Arole taken by a particular type of organism within its community.

Answer 12

Niche

Question 13

The natural home or environment of an animal, plant, or other organism.

Answer 13

Habitat

Question 14

An organism that produces organic compounds from simple substances such as water and carbon dioxide; an autotroph.

Answer 14

Producers

Question 15

An organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.

Answer 15

Autotrophs

Question 16

A division of microorganisms that are related to the bacteria but are capable of photosynthesis. They are prokaryotic and represent the earliest known form of life on the earth.

Answer 16

Cyanobacteria

Question 17

A simple sugar which is an important energy source in living organisms and is a component of many carbohydrates.

Answer 17

Glucose

Question 18

Four important classes of organic molecules—carbohydrates, lipids, proteins, and nucleic acids—are discussed in the following sections.

Answer 18

Organic molecules

Question 19

Stiffen (fabric or clothing) with starch.

Answer 19

Starches

Question 20

Any of a class of organic compounds that are fatty acids or their derivatives and are insoluble in water but soluble in organic solvents. They include many natural oils, waxes, and steroids.

Answer 20

Lipids

Question 21

Any of a class of nitrogenous organic compounds which have large molecules composed of one or more long chains of amino acids and are an essential part of all living organisms, especially as structural components of body tissues such as muscle, hair, etc., and as enzymes and antibodies.

Answer 21

Proteins

Question 22

A complex organic substance present in living cells, especially DNA or RNA, whose molecules consist of many nucleotides linked in a long chain.

Answer 22

Nucleic Acids

Question 23

An organism that derives the organic compounds and energy it needs from the consumption of other organisms; a heterotroph.

Answer 23

Consumers

Question 24

An organism deriving its nutritional requirements from complex organic substances.

Answer 24

Heterotrophs

Question 25

An animal that feeds on plants.

Answer 25

Herbivores

Question 26

An animal that feeds on other animals.

Answer 26

Carnivores

Question 27

An animal or person that eats a variety of food of both plant and animal origin.

Answer 27

Omnivores

Question 28

An organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material.

Answer 28

Decomposers

Question 29

An organism that feeds on or derives nourishment from decaying organic matter.

Answer 29

Saprotrophs