Question

1--> if you wanted to predict how large a population would be in ten years what would you need to know? check all that apply

a. the number of offspring per individual

b. the numbers of deaths and immigrations per year

c. the initial population size

d. the per capita growth rate

2-->what is the key characteristic of a population exhibiting a type II survivorship curve?

a. younger individuals have a greater chance of survival

b. younger individuals are more likely to die than other individuals

c. large numbers of small offspring

d. all individuals of all ages have an equal chance of dying

3--> when a population is close to its carrying capacity the value of (1-N/K) is likely to be:

a.close to 1

b. close to 0.5

c. close to 0

4--> in a logistic growth curve, at the infection point the value of (1-N/K) is likely to be:

a.close to 1

b. close to 0.5

c. close to 0

Answer 1

1) We need to know about c) initial population size; d) per capita growth rate.

2) In type II surviving curve, d) all individuals of all ages have equal chance of dying.

There are three general types of surviving curves which represents the different nature of survivors in different types of populations.

Type I demonstrates high survival rate in young generations due to high parental care of fewer offspring. Example- Human

Type II demonstrates constant death rate over life span. Example - birds (in some cases)

Type III demonstrates low survival rate during early life due to low or no parental care of large number of offsprings. Example - most invertebrates.

3) When population size is close to its carrying capacity, (1 - N/K) is c) close to 0

4) At the inflection point of value, (1 -N/K) is likely to be b) close to 0.5

The explanation is given below: