Irvine Valley College

BIO 1

Quiz 1:

Ecology of populations

1)Is the following statement true or false: Humans are iteroparous.

1. True
2. False

(2)                Which of the following is not likely to influence the carrying capacity of a habitat?

1. The amount of food available
2. The number of competitors
3. The intensity of predation on the population
4. All are likely to influence carrying capacity

3.   Of the curves above, 'D" best represents the survivorship of a Type III species.

• A.           True      B.            False

4.   The term ‘r’ is a measure of a population’s

1. Growth rate
2. Mortality rate
3. Survivorship rate
4. None of the above

5. A cohort is a group of organisms all of the same population and of the same age.

1. True
2. False

6.   Age-structure diagrams with a columnar shape are the result of

1. High reproductive rates
2. Low reproductive rates
3. Low juvenile survival
4. None of the above

7. When a population's growth reaches its carrying capacity, it is said to be in its

1. lag phase
2. acceleration phase
3. deceleration phase
4. equilibrium phase

8. The population curve referred to in Question 8 is most likely a(n)

1. 'S' curve
2. 'J' curve
3. linear growth curve
4. None of the above

9. Which of the following pertains to an r-selected species?

1. Late to mature
2. large-sized young
3. Semelparous
4. extensive parental care

10.   Camouflage is a strategy used in

1. Competition between species
2. succession
3. defense
4. None of the above

11.               Which of the following is a characteristic of a columnar age structure diagram?

1. High reproductive rate
2. Low reproductive rate