Bio unit B Flashcards

(75 cards)

1
Q

What is a habitat

A

A place or area an organisms needs to survive.

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2
Q

what is ecological niche

A

the role an organism plays in a community

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3
Q

the higher the number of different habitats and niches in an ecosystem the greater the ______

A

Biodiversity

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4
Q

WHat is a terrestrial ecosystem

A

A terrestrial ecosystem is a community of living things and their environment that exists on land.

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5
Q

Terrestrial ecosystem can be characterised by their

A

Climate, Plants and animals adapted to the climate

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6
Q

Aquatic ecosystems can be charactreized by their

A

salt concentration, water depth and speed, plants and animals that are adapted to the conditions

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7
Q

Limiting factors

A

Abiotic and biotic characteristics of ecosystems that limit range, distribution and number of individuals in a population

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8
Q

Biotic factors

A

Living organisms in the environment

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9
Q

Abiotic Factors

A

Sunlight, temp, precipitation, nutrients, soil type, wind

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10
Q

Intraspecific competition

A

Competition within a speceies

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11
Q

INterspecific competition

A

Competition between different species

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12
Q

Predation

A

The predadotor kills and eats the prey( predator benefits only)

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13
Q

Parasitism

A

Parasitism is a type of relationship between two organisms where one benefits (the parasite) and the other is harmed (the host).

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14
Q

Adaptations

A

Inherited characteristics that help organisms survive and reproduce

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15
Q

Adaptations are the result pf gradual changes in the _____ over time

A

species

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16
Q

Taxonomy

A

is the science of naming, describing, and classifying organisms into groups based on their similarities and differences.

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17
Q

Broadest to specific classification level

A

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.

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18
Q

Mnemonic for the classifications

A

Danish king Philip Came Over For Green Stew

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19
Q

All living things are divided into what 3 domains

A

Bacteria, Archaea, Eukarya

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20
Q

Bacteria kingdom class

A

Bacteria

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21
Q

Bacteria cell type

A

Prokaryotic

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22
Q

Bacteria Cellular organization and structure

A

unicellular, cells walls contain peptidoglycan

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23
Q

Mode of nutrition for bacteria

A

Autotrophic or heterotrophic

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24
Q

Archaea kingdom

A

Archaea

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25
Archaea cell type
Prokaryotic
26
Archaea Cellular organization and structure
unicellular, cell walls do not contain peptidoglycan
27
archea mode of nutrition
autotroph and hetertoph
28
Eukarya kingdoms
Protista, plantae, Fungi, Animalia
29
cell type for Eukarya
Eukaryotic
30
Protista Cellular organization and structure
mostly unicellular, cell walls contain cellulose if present.
31
plantae Cellular organization and structure
Multicellular, cell walls contain cellulose
32
fungi Cellular organization and structure
MOst multicellular some unicellular, cell wallks contain chitin
33
animalia Cellular organization and structure
multicellular, no cell walls.
34
postista mode of nutrition
auto and hetero
35
plantae mode of nutrition
auto
36
fungi mod of nutrition
heter
37
animalia
heter
38
unity of life
similarities between organisms
39
diversity of life
differences between organisms
40
Lamarck’s theory
says that organisms can pass on traits they acquire during their lifetime to their offspring.
41
2 main ideas from lamarck
use and disuse, and inheritance of aquired chatacterisitics.
42
Charles darwin
theory of evolution by natural selection
43
Darwin 2 main ideas
descent with modification, natural selection
44
Heritable variation
is the differences in traits among individuals of a species that can be passed on to their offspring.
45
Heritable variation are produced by
mutations
46
mutations
are random changes in dna
47
causes of mutations
spontaneous- mistakes during dna replication and mutagens- physical and chemical agenst that damage dna
48
natural selection
is the process where organisms with traits better suited to their environment survive and reproduce more than others, passing those traits to the next generation.
49
sexual selection
is a type of natural selection where organisms with traits that help them attract mates reproduce more, even if those traits don’t help survival.
50
intrasexual selection
individuals of the same gender compete for the other gender
51
artificial selection
selective breeding by humans to encourage desirable traits
51
intersexual selection
females are choosy in selecting their mates of the opposite sex
52
transitional fossils
are fossils that show how one kind of animal slowly changed into another.
53
biogeography
study of geographical distribution of organisms around the world.
54
the distribution of organism is influenced by
continental drift
55
homologous structures
similar structures but diff functions, common anestor
56
analogous structures
diff structures but similar functions, no common ancestor
57
vestigal structures
body parts that no longer have a useful function in an organism but were useful in ancestors.
58
all embyros have
gill and a tail.
59
biological species
is a group of organisms that can mate with each other and produce fertile offspring.
60
Fertile offspring
are children or young of a species that can grow up and reproduce themselves.
61
speciation
the formation of new species new species
62
transformation
transformation of one species into another species
63
Reproductive isolation
populations can’t interbreed.
64
speciation requires
reproductive isolation
65
biological barrieres
are factors that keep populations reproductively isolated even when they live on the same geographical area.
66
Habitat isolation
live in diff habitats
66
behavioral isolation
have diff cpurtship rituals
67
temporal isolation
breed at diff times
68
gametic isolation
sperm cannot fertilize with eggs
69
mechanical isolation
when two organisms can’t mate because their reproductive organs don’t fit together properly.
70
geographical barriers
physical features in the environment that separate populations and stop them from interbreeding.
71
adaptive radiation
is a special type of speciation that occurs when a population diversifies into sseveral new species in order to occupy diff ecological niches.
72
Puncuated equilibrium
sudden change
73
Gradualism
small changes