1. Description of the life cycle of the Salmon would be a. Annual iteroparous b.

Question

1. Description of the life cycle of the Salmon would be

a. Annual iteroparous

b. Perennial iteroparous

c. Annual semeparous

d. Perennial semeparous

e. Perennial annual

.

2. Which life-history strategy best describes that of humans?

A. r strategy

B. K strategy

C. Z strategy

D. Impossible to determine

E. Both r and Z

.

3. A tick female can lay a few thousands of eggs in the ground but only less than 1%of them make it to maturity. What kind of life history does it best fit?

a. K-selection

b. Z-Selection

c. R- selection

d. Phenotypic plasticity

.

4. The equilibrium value of P (prop. of occupied patches) is a function of the probabilities of extinction (e) and colonization (m)

P = 1 – [e / m]

For a metapopulation of butterflies extinction rate per patch is 0.2 and colonization probability (per patch) is 0.6. Calculate P

a. 0.333

b. 0.667

c. 1

d. 0

e. 0.25

.

5. +,- interaction is termed:

a. Competition

b. Exploitation

c. Mutualism

d. Commensalism

e. Amensalism

.

6. Individuals of one species prevents access to a common resource from individuals of the other species. This type of interaction is called:

a. Mutualism

b. Predation

c. Exploitation competition

d. Interference competition

e. Pre-emptive competition

.

.

Allelopathy is a biological phenomenon by which an organism produces one or more biochemicals that negatively influence the growth, survival, and reproduction of other organisms.

7. Casuarina equisetifolia litter completely suppresses germination of understory plants as shown here despite the relative openness of the canopy and ample rainfall (>120 cm/yr) at the location

Allelopathy can be best classified as:

a. Mutualism

b. Predation

c. Exploitation competition

d. Interference competition

e. Pre-emptive competition

.

8. Competing species often appear more similar when occurring alone and more different when co-occurring. This phenomenon is termed

a. Competitive exclusion

b. Mutualism

c. Communism

d. Character convergence

e. Character displacement

Explanation / Answer

1. C. Annual semeparous

2. B. K strategy

3. C. R selection

4. B. O.667

5. B. Exploitation

6. D. Interference competition

7. D. Interference competition

8. E. Character displacement

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