Question

T/F   In a logistic model when N is equal to K the population stops growing and R =0

In the logistic model of population growth if r>0 then

• Both the population decline and N<K
• Population growth stops
• N<K
• N>K
• The population declines

If the age distribution diagram has the smallest concentration of individuals in the bottom portion or is considered to be an urn shape, this indicates that

• Cannot be determined
• The population is growing slowly
• The population is declining
• The population is growing rapidly
• The population is stable

During drought in the gal pagos islands, the ground finches most likely to survive are those with

• Smaller bulls
• Larger territories
• Earlier maturation
• Smaller bodies
• Larger

Nt = n0^t represents

• Logistic growth
• Geometric population growth
• None of the choices are correct
• Annual growth rate
• Exponential growth rate

Answer 1

1. True- In a logistic model when N is equal to K the population stops growing and R =0

when r > 0 (i.e. birth rate > death rate i.e the population approaches the carrying capacity. That is, if r = 0, the population size remains at the initial size, P₀.

2. N<K

3. The population is declining

4. smaller bodies

5. Probably smaller-bodied finches allowed them to sustain in the drought conditions.

6. Logistic growth

Logistic growth is continuous population growth in an environment where resources are limited; it is density-dependent growth. Logistic growth is characterized by a sigmoidal or S-shaped growth curve.