Biodiversity and Classification Flashcards Preview

Biology Unit 1- Natural Selection > Biodiversity and Classification > Flashcards

Flashcards in Biodiversity and Classification Deck (8)
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1

BIodiversity is important because...

Anthropogenic: related to actual human use (economically useful)
Intrinsic: Related to human emotion (what emotions cause us to preserve environment? Guilt, animal rights. etc)

2

classification

act of grouping information or objects based on similarities.

3

taxonomy

is the SCIENCE of grouping and naming organisms

4

Linnaeus

first started classifying things. He called the groups genera and grouped genera into kingdoms. Categories are called taxa.

5

Taxonomy system

(Do) Kids prefer cheese over fried green spinach?

6

Binomial Nomenclature

genus name is capitalized and species name is in italics (or underlined if handwritten) Ex. Felis concolor

7

Natural Selection

Put very simply, he proposed that organisms produce excess 
offspring which then compete for resources. The offspring with the 
best inherited adaptations survive to reproduce, and so populations 
gradually change to suit their environments.

If two sub-populations are exposed to different environments, they 
will gradually come to differ from each other. Given long enough, in 
a variable environment, ancestral populations will give rise to two (or 
more) quite different descendant populations.

8

Cladograms

Ancestor- where tree beings.
Point where two lines meet- speciation event
line before speciation event: ancestral lineage
clade includes ancestor and ALL descendants