Chapter 10 and 11- Classification and biodiversity Flashcards

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1
Q

What is an autotrophic organism?

A

Nutrients acquired by photosynthesis

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2
Q

What is a heterotrophic organism?

A

Nutrients acquired by ingestion of other organisms

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3
Q

Out of the 5 kingdoms, which are multicellular?

A
  • fungi
  • plantae
  • animalia
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4
Q

Out of the 5 kingdoms, which are unicellular?

A
  • prokaryotae

- Protoctista

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5
Q

Relationship between classification and phylogeny?

A

Modern classification reflects phylogeny

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6
Q

What are the three domains?

A
  • archaea
  • bacteria
  • eukaryota
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7
Q

Why do two species share the same first name?

A

Same genus

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8
Q

Advantages of using binomial nomenclature than common names?

A
  • universal
  • different common name for same organism
  • no language barrier
  • know which genus and species it belongs to
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9
Q

How can you estimate the age of extinct organisms?

A

Look at fossil record

Fossils deeper in ground older than those near surface

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10
Q

Explain what developments in science show about the nature of scientific knowledge

A

Always improving

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11
Q

What are domains decided upon?

A

-amino acid sequences

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12
Q

Why the three domain system is now used in preference to the five kingdom system

A
  • fundamental differences between bacteria and archaea
  • bacteria and archaea have diff RNA
  • eukaryotes all have 80s ribosomes
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13
Q

Likely causes of variation in body length of x

A
  • environment
  • genetics
  • age
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14
Q

What four observations did Charles Darwin and Wallace make?

A
  • offspring are similar to their parents
  • no two are identical
  • organisms can produce large numbers of offspring
  • populations tend to remain stable in size
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15
Q

What three sources of evidence are there for evolution?

A
  • fossil record
  • comparative biochemistry
  • comparative anatomy
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16
Q

What is intraspecific variation?

A

Differences between organisms within a species

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17
Q

What is interspecific variation?

A

-differences between members of different species

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18
Q

What type of variation is height

A

Continuous

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19
Q

What type of variation is blood type?

A

-discontinuous

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20
Q

What term describes the effect created by predators?

A

Selection pressure

21
Q

What term describes the characteristic that leads to increased survival

A

Adaptation

22
Q

Suggest factors that cause differentiated survival

A
  • disease
  • competition
  • environmental change
  • hunting
23
Q

How could you describe the x that managed to reproduce?

A

Increased reproductive success

24
Q

What are the three types of adaptations?

A
  • behavioural
  • anatomical
  • physiological
25
Q

An organism has 70s ribosomes and circular DNA. What kingdom does it belong to?

A

Prokaryotae

26
Q

Which test is used to compare two means?

A

Student’s t test

27
Q

Why bats and birds have both evolved wings depsite not being closely related?

A
  • similar lifestyle
  • similar selection pressure
  • wings are an advantage for survival to both
  • alleles for wings more likely to be passed on to next generation
28
Q

How fossils provide evidence for theory of evolution?

A
  • can see how structures of organisms have changed over time
  • there are methods to date fossils
29
Q

Why interspecies breeding did not work?

A
  • diff genus
  • diff species
  • generically incompatible
  • may have diff no of chromosomes
30
Q

What does cites stand for?

A

Convention on international trade in endangered species?

31
Q

Aims of cites?

A
  • regulate trade in selected animals

- ensure trade does not put wild populations at risk

32
Q

Factors that need to be taken into consideration when selecting individuals for breeding?

A
  • health
  • of reproductive age
  • selecting individuals of opposite sex
33
Q

What can be done to ensure success of release programme after captive breeding?

A
  • adequate food supply
  • healthy before release
  • no hunting
34
Q

Classifying organisms called?

A

Taxonomy

35
Q

Phylogeny?

A

Evolutionary relationship between organisms

36
Q

Which domain parrot belongs to?

A

Eukarya

37
Q

What happens if same genus?

A

-share more recent common ancestor
-will have genes in common
-e.g. both have
-

38
Q

Variation?

A

Differences between species

39
Q

Why reported mass may not be accurate?

A
  • small sample

- individuals sampled may not be representative of population

40
Q

Why conservation of x is important?

A
  • part of food chain
  • potential sources of Medicine
  • to maintain biodiversity
41
Q

Ex situ?

A

Not in natural habitat

42
Q

Why better to conserve seed bank than adult plants?

A
  • less susceptible to disease
  • remain viable for long periods
  • take up little space
  • able to store large numbers
43
Q

Why important to make sure seeds in seed bank have been collected from diff sites in wild?

A
  • to maintain gene pool
  • reduces chance of inbreeding
  • reduced chance of future disease
44
Q

How fossil evidence supports evolution?

A
  • fossils show that organisms have changed over time
  • can be dated
  • show intermediate forms
45
Q

Ways population of x could be conserved?

A
  • ban fishing
  • ex situ: captive breeding
  • educating people in fishing industry
46
Q

5 kingdoms?

A
  • animals
  • plants
  • fungi
  • protocist
  • prokaryotes
47
Q

6 kingdoms?

A
  • animals
  • plants
  • fungi
  • protocist
  • archae bacteria
  • eubacteria
48
Q

Outline features of 3 domain system?

A
  • prokaryotes are split into groups bc archae and bacteria are different
  • based on differences in DNA
  • eukaryotes have been placed in same group no they have similarities
49
Q

How ability to use x may have evolved from ancestor that had that ability?

A
  • natural selection
  • selection pressure is lack of food
  • individuals have mutation for x which is random or pre existing
  • individuals with mutation survive
  • mutation passed on to next generation
  • over many generations frequency of Allele / characteristic increases