Describing and Arranging Organisms Flashcards

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1
Q

Essentialism

A
  • distinguishing species before evolution

- different species have different essences

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2
Q

Population Thinking

A
  • distinguishing species after evolution

- interbreeding members descended from common ancestor

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3
Q

Biological Taxonomy

A

fitting into higher more inclusive groups

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4
Q

Artificial Classification

A

group defining attributes that don’t correlate with other attributes
-the colour green, not all green things are related

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5
Q

Natural Classification

A

group defining attributes that do correlate with other attributes

  • relationships based on common descent
  • more inclusive groups have a more recent common ancestor
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6
Q

What compelled natural historians to go beyond ancient authors?

A

1) forest of northern Europe had different species than southern Europe
2) Printing press allowed for quality images
3) voyages to other continents brought back animals/plants that they hadn’t seen before

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7
Q

Zoologists

A

more in the function and adaptation

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8
Q

Botanists

A

more interested in identification and classification

-important to classify plants for medicine

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9
Q

2 most famous botanists

A

1) Theophrastus

2) Dioscoride

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10
Q

how many plants did they describe

A

500-600 each

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11
Q

Luca Ghini

A

-invented the herbarium

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12
Q

What was Buffon interested in

A

the description of organisms, not as much how they were classified and arranged

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13
Q

What was Buffon the director of

A

Royal Botanical Garden (greatest natural history museum in the world)
-published 36 volumes of natural history, 8 more were published after his death

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14
Q

4 basic types of beliefs (religion)

A

1) Theism: one or more gods that have ongoing involvement
2) Deism: upper level created universe but no involvement
3) Pantheism: universe has some order but no god created it
4) Atheism: gods don’t exist

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15
Q

Buffons contributions

A

1) Classification - hierarchy, individuals who can reproduce together
2) Biogeography - how organisms are distributed around the world (Noah’s ark landed on Mt. Ararat)

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16
Q

Buffon’s (evolutionary?) view

A
  • interior mound of species is unchangeable
  • differed a bit by spontaneous generation (why all people don’t look alike)
  • minimal evolutionary adaptation
17
Q

Buffon’s Law

A

different regions with similar environments will have different animals

18
Q

Why did Buffon reject common descent?

A

no intermediates

  • zebra and horse don’t make zorse
  • organisms evolve but don’t branch
19
Q

Buffon’s Epochs of Nature

A

1) Comet hit sun, ejecting debris
2) Debris cooled to form planets
3) oceans formed, marine life formed spontaneously
4) water retreated, continents formed
5) Animal life was spontaneously generated
6) Continents fragmented
7) humans appeared and took over

20
Q

How long did Buffon think the Earth is

A

75,000 years

-earth temp is indicator of its age

21
Q

Arrow of Time

A

organisms always had to adapt to colder temperatures or migrate (adapt to colder = evolution??)

22
Q

Linnaeus

A

-manager of scientific information

23
Q

what was 2 major issues for managing scientific info

A

1) how to arrange organisms in a natural way that tells you about nature (grouping)
2) how to access the scientific literature of these plants

24
Q

How did Linnaeus change nomenclature

A

he separated the name and the description

25
Q

How did Linnaeus classify plants

A
-according to their sexual features 
# of stamens (male part) and pistils (female part)
26
Q

What did Linnaeus say is the next mission of Biology

A

to form natural groups

-knew the importance of natural group but not enough info to form them himself

27
Q

What kind of hierarchy did Linnaeus form

A

Inclusive hierarchy

  • groups within groups
  • made the relatedness of organisms obvious
  • evolutionary relationships without fully grasping what he was doing
28
Q

What did Lamrack invent?

A
  • biological keys

- keys used to identify specimens by series of 2-fold decisions