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Biology Study Guide - Ecology

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Question 1
Choose the correct type of ecosystem for the following descriptions.

Mediterranean climate, usually on the west coast of a land mass


Question 2 text
An arithmetic growth curve will have a steeper upward slope than an exponential growth curve.

Question 3 text Question 3
What seems to be the most influential factor in making possible the explosion in the human population that began around 1800?

more food production
the industrial revolution
conquering of diseases
genetic mutations

Question 4 text Question 4
A negative rate of increase, or a negative r, means that:

the population is declining in numbers.
the population has overshot K.
birth rates have decreased.
predation rates are greater than birth rates.

Question 5 text Question 5
Which of the following water uses is probably the highest in human society?

sewage systems

Question 6 text Question 6
If the population of mountain lions adds 10 new lions each year for 20 years, we would classify this type of growth as:


Question 7 text Question 7
Which of the following might an ecologist study?

the general nature of digestive enzymes
the genetics of mosquitoes
the effects of increasing carbon dioxide on forest growth
the nature of the immune system in humans

Question 8 text Question 8
Dandelions have a short life span and a high investment in seed production, but each seed is small and wind-dispersed. This is an example of:

a K-selected species.
an equilibrium species.
an r-selected species.
a density-dependent species.

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Solution Preview

Question 1.
Answer: Chaparral
Chaparral or Mediterranean forests, woodlands, and shrub is a temperate biome, characterized by hot-dry summers and mild and rainy winters. Nearly all of the rainfall occurs in the winter and spring rainy season.

Question 2.
Answer: False
Arithmetic growth curves have a rate of increase (or decrease) by a constant amount per time period, for example a population ...

Solution Summary

The following eight questions concern ecological concepts improtant in understanidng population trends. The answers are given to the questions along with an explanation of the solution.

See Also This Related BrainMass Solution

Anthropology multiple choice questions

1. Which of the following is characteristic of the anthropological approach?
a. an emphasis on biological explanations of cultural variation
b. ethnocentrism
c. an emphasis on shared customs and institutions
d. an emphasis on the individual
e. all of the above

2. Anthropologists generally consider cultural elements to be __________ in nature.
a. technological
b. artistic
c. material
d. symbolic
e. innate

3. The attempt to evaluate and understand a custom in the context of the meaning system and morality of the culture in which it is present is called:
a. ethnocentrism
b. ethnography
c. cultural ecology
d. cultural relativism
e. the etic approach

4. The practice of understanding and evaluating a custom in the context of one's own culture is called:
a. ethnocentrism
b. ethnography
c. cultural ecology
d. cultural relativism
e. the etic approach

5. Which statement about the relationship between environment and human behaviour best summarizes the anthropological approach
a. Human behaviour can be understood as a biological conditioned response to environmental stimulate
b. Human behaviour can be understood as a direct response to environmental conditions and stimulae.
c. Human behaviour can be understood as a culturally conditioned response to environmental stimulae.
d. Human behaviour can be understood without any reference to environmental conditions at all.

6. Which statement about human races best summarizes anthropological findings?
a. Popular racial categories are biologically significant units of anthropological analysis
b. Popular racial categories need to be further refined to formulate biologically significant units
c. Popular racial categories are socio-cultural constructs of no potential biological significance.
d. Popular racial categories have no biological or socio-cultural significance.

7. Which statement about the evolution of culture and the human brain is the most accurate
a. Evidence of cultural behaviour does not appear until human brain size attained its current dimensions
b. Evidence of cultural behaviour appears soon after an initial spurt in brain size growth.
c. Evidence of cultural behaviour appears immediately before an initial spurt in brain size growth
d. Human brain sizes can be expected to increase dramatically in the wake of the recent "information revolution."

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