2.1 Study Guide Flashcards

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1
Q

Def. of population

A

all of the organisms in the same place at the same time that can reproduce

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2
Q

Def of population density

A

of individuals per area

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3
Q

Def of population distribution

A

patterns in which organisms of population are spread

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4
Q

Random distribution

A

everywhere, no specific pattern or order

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5
Q

Uniform distribution

A

in arrays, orderly

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6
Q

Clumped distribution

A

close together, in clumps

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7
Q

Reasons for Random Distribution

A

to fall into a favorable environment, to spread quicker and vaster

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8
Q

Reasons for Uniform Distribution

A

invasive species taking over, scarce resources, territorial

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9
Q

Reasons for Clumped Distribution

A

safe environment, safety in numbers, avoids being singled off

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10
Q

Each sampled quadrat is 5m x 5m. Five squares were randomly selected, these are the amounts of dandelions in each square:
3, 4, 7, 1, 9
If the field is 625 m2 in area, what is the estimated size of the population?

A

120 dandelions

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11
Q

One night, you trap 40 mice, mark them, and let them go. Two nights later, you again trap 40 mice, and 12 of them are marked. What is the total number of mice in the meadow? (round to nearest whole number)

A

133

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12
Q

If there are 450,000 people in the city of Auburn, and the urban area covers 9 miles, what is the population density/mile

A

50,000/mile

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13
Q
A
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