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Science grade 9 > science unit A > Flashcards

science unit A Flashcards

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Biology 101 flashcards
1
Q

Living things of the same kind that are able to reproduce successfully

A

species

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2
Q

The variety of species and ecosystems on earth and the ecological processes of which they are a part

A

Biological Diversity

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3
Q

a particular environment where living things interact

A

Ecosystem

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4
Q

group of individuals of the same species living in an area

A

Population

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5
Q

A group of populations of different species living in the same area

A

Community

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6
Q

The relationship between two different species

A

Symbiosis

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7
Q

relationship between species, one benefits, other doesn’t benefit or get harmed.

A

Commensalism

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8
Q

Both species benefit

A

Mutualism

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9
Q

one specie benefit, other is harmed

A

Parasitism

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10
Q

multiple species using the same resources

A

Interspecies competition

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11
Q

role of an organism in an ecosystem

A

Niche

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12
Q

division of a resource among two of more coexisting species

A

Resource partitioning

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13
Q

variation within a species

A

Variability

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14
Q

process where the environment selects which individuals will survive and reproduce

A

Natural selection

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15
Q

characteristics transmitted from generation to generation

A

heritable characteristics

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16
Q

characteristics caused by the environment

A

non-heritable characteristics

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17
Q

variation in a heritable characteristic such as being albino

A

discrete variation

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18
Q

variation in a heritable characteristic that falls within a range, such as height

A

Continuous variation

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19
Q

reproduction without fusion of sex cells resulting in identical offspring

A

Asexual variation

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20
Q

A type of asexual reproduction in amoebas and other organisms where the cell divides exactly in two

A

Binary fission

21
Q

type of asexual reproduction where a new organism develops from an outgrowth, or bud on the parent

A

budding

22
Q

cell produced by asexual reproduction in certain organisms such as ferns which can develop directly into adults

A

spores

23
Q

type of asexual reproduction in plants that does not involve the formation of a seed

A

Vegetative reproduction

24
Q

reproduction involving the exchange of genetic material between two individuals resulting in an offspring genetically different from the parents

A

sexual reproduction

25
Q

a sex cell, either female or male that can unite with another to form a fertilized call

A

gametes

26
Q

the union of female and male sex calls

A

fertilization

27
Q

a fertilized egg

A

zygote

28
Q

the first division of a fertilized egg

A

cleavage

29
Q

an undeveloped organism in its beginning stages

A

embryo

30
Q

the transfer of pollen from the anther of one plant to the stigma of another

A

cross-pollination

31
Q

the joining of a gamete from a pollen grain and a gamete from an ovule to form a zygote

A

cross fertilization

32
Q

deoxyribonucleic acid, the genetic material found mainly in the nuclei of cells of living organisms

A

DNA

33
Q

arrangement of four chemicals “letters” on a chromosome, which determines a specific characteristic of an organism

A

Genetic code

34
Q

a structure in which DNA is arranged and along which genes are located

A

Chromosomes

35
Q

a category in the classification of living things, more general than a species, but more specific than a family

A

gene

36
Q

a possible form of a gene

A

alleles

37
Q

a type of cell division that produces two identical daughter cells from the one parent cell

A

mitosis

38
Q

a type of call division that produces four sex cells from one parent cell

A

meiosis

39
Q

a characteristic of an organism

A

trait

40
Q

referring to a plant or animal that has ancestors all with the same form of a trait

A

purebred

41
Q

an organism produced by crossing two identical purebred from different forms of a trait

A

hybrid

42
Q

the outward form observed when two opposite acting alleles are inherited

A

dominant trait

43
Q

the outward form observed only when two same acting non dominant alleles are inherited

A

recessive trait

44
Q

a pattern of inheritance seen when two different alleles are present at the same gene location, nut neither is dominant

A

incomplete dominance

45
Q

no longer in existence on the planet

A

extinction

46
Q

extinction of an organism from a specific region

A

extirpation

47
Q

species have adapted to a small set of environmental conditions, which leaves it vulnerable to extinction

A

overspecialization

48
Q

breeding by humans of plants and animals with desirable traits to produce offspring with those desirable traits

A

artificial selection

49
Q
A

biotechnology

Science grade 9 (1 decks)

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