ch 4 key terms

Question 1

ecosystem

Answer 1

a biological community of interacting organisms and their physical environment.

Question 2

biotic factor

Answer 2

living or once-living organisms in the ecosystem. These are obtained from the biosphere and are capable of reproduction

Question 3

abiotic factor

Answer 3

non-living part of an ecosystem that shapes its environment. In a terrestrial ecosystem, examples might include temperature, light, and water. In a marine ecosystem,

Question 4

organism

Answer 4

individual form of life that is capable of growing and reproducing, and have one or more cells.

Question 5

species

Answer 5

group of organisms that can reproduce with one another in nature and produce fertile offspring

Question 6

population

Answer 6

the whole number of people or inhabitants in a country or region. the total of individuals occupying an area or making up a whole

Question 7

community

Answer 7

a group of people living in the same place or having a particular characteristic in common.

Question 8

habitat

Answer 8

the natural home or environment of an animal, plant, or other organism

Question 9

natural selection

Answer 9

the process whereby organisms better adapted to their environment tend to survive and produce more offspring

Question 10

evolution

Answer 10

the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.

Question 11

adaptation

Answer 11

a movie, television drama, or stage play that has been adapted from a written work, typically a novel.

Question 12

artificial selection

Answer 12

Image result for artificial selection definition
Artificial selection is the identification by humans of desirable traits in plants and animals, and the steps taken to enhance and perpetuate those traits in future generations.

Question 13

resistance

Answer 13

the refusal to accept or comply with something; the attempt to prevent something by action or argument.

Question 14

archaea

Answer 14

group of single-celled prokaryotic organisms (that is, organisms whose cells lack a defined nucleus) that have distinct molecular characteristics separating them from bacteria (the other, more prominent group of prokaryotes)

Question 15

bacteria

Answer 15

a member of a large group of unicellular microorganisms which have cell walls but lack organelles and an organized nucleus, including some that can cause disease.

Question 16

fungus

Answer 16

A fungal infection, also called mycosis, is a skin disease caused by a fungus. There are millions of species of fungi.

Question 17

protist

Answer 17

Protists are a diverse collection of organisms. While exceptions exist, they are primarily microscopic and unicellular, or made up of a single cell.

Question 18

gymnosperm

Answer 18

any of a class or subdivision (Gymnospermae) of woody vascular seed plants (as conifers or cycads) that produce naked seeds not enclosed in an ovary and that in some instances have motile spermatozoids

Question 19

angiosperm

Answer 19

Angiosperms are plants that produce flowers and bear their seeds in fruits. They are the largest and most diverse group within the kingdom Plantae, with about 300,000 species

Question 20

invertebrate

Answer 20

nvertebrate is an animal without a backbone. In fact, invertebrates don’t have any any bones at all! Invertebrates that you may be familiar with include spiders, worms, snails, lobsters, crabs and insects like butterflies

Question 21

vertebrate

Answer 21

vertebrae or a backbone Mammals are vertebrate animals. vertebrate. noun. Kids Definition of vertebrate (Entry 2 of 2) : an animal (as a fish, amphibian, reptile, bird, or mammal)