Unit 2.2

Question 1

What does r stand for?

Answer 1

Maximum growth rate per capita

Question 2

What does N stand for?

Answer 2

Population size

Question 3

What does t stand for?

Answer 3

Time

Question 4

What does dN/dt stand for?

Answer 4

Population growth rate

Question 5

What does N subscript 0 stand for?

Answer 5

Initial population size

Question 6

Say the starting population is 10 and after one year 50 are born and 10 die. What is the growth per capita?

Answer 6

(50-10)/10
(40)/10
4

Question 7

How do you know if you have positive growth?

Answer 7

If B+I > D+E

Question 8

How do you know if you have no growth?

Answer 8

B+I = D+E

Question 9

How do you know if you have negative growth?

Answer 9

B+I < D+E

Question 10

What is the difference between exponential and logistic graphs?

Answer 10

Exponential doesn’t have limiting factors, but logistic does

Question 11

What kind of graph has ideal environment growth without limiting factors?

Answer 11

Exponential

Question 12

What is the equation for Exponential growth?

Answer 12

dN/dt = rN

Question 13

What does K stand for?

Answer 13

Carrying capacity

Question 14

What happens to dN/dt as N approaches K?

Answer 14

The number gets smaller and smaller

Question 15

How does the slope change at 1/2 K?

Answer 15

It begins to decrease

Question 16

On a logistic graph where is population growth the highest?

Answer 16

At the top of the arch

Question 17

What happens on the graph when dN/dt increases?

Answer 17

The curve steepens and reaches the carrying capacity quicker.

Question 18

What happens when the N subscript 0 is higher?

Answer 18

The line on the graph starts further up the y-axis