Affiliate Marketing Secrets

1.Earth has undergone some catastrophic changes from time to time. Which of these most likely explains why life on Earth continued following these catastrophes?
A. Dominate species had a slow mutation rate.
B. Many species filled the same niche.
C. A strong species had many different characteristics.
D. A wide diversity of species existed.
2. When a species shows a variety of colors this demonstrates
A. Species diversity
B. genetic diversity
C. Species richness
D. Ecosystem diversity.
3. Genetic diversity within interbreeding populations increases
A. The chance of an outbreak eliminating the species.
B. the amount of species in the ecosystem.
C. The chances that some species will survive during a changing environmental condition or during an outbreak of disease.
D. The likelihood of an unstable ecosystem.
4. Which of the following has the greatest species diversity?
A. Polar region
B. rainforest
C. Prairie
D. Mountain range

PLEASE EXPLAIN WHY YOU CHOOSE THE ANSWER FOR EACH QUESTION
3. . It was recently discovered that an amoeba (a single celled organism) falls asleep (goes “dormant”) when exposed to valium. Humans also fall asleep when exposed to valium. The amoeba releases a chemical resembling valium that is almost identical to a chemical released by the human brain.
This example best illustrates which theme in biology?
a. Unity within diversity
b. Structure and function
4. Pyrodictium are single-celled organisms, lacking a nucleus. They live near deep-sea active volcanic openings preferring acidic conditions and temperatures above 100 degrees Celsius (i.e., a temperature above boiling if at sea level) and die at temperatures below 82ºC. Their genetic material was unlike any other single-celled organism known to humans before 1980.
In what domain is Pyrodictium?
a. Bacteria
b. Archaea c. Eukarya
d. Prokarya
17. All organisms require certain nutrients for survival and reproduction. Suppose a particular bacterial population thrives only in the top five millimeters of lakes. Suppose a microscopic plant population also thrives only in the top five millimeters of lakes. When the bacterial and plant populations are floating together, the bacterial population is reduced to 20% of the number it was when floating in the absence of plants. What does this situation likely illustrate?
a. Species diversity of a community
b. Niches of two species are separate and distinct.
c. One population serving as a resource for another population.
d. Interspecific competition.
19. What would be an example of primary succession?
a. Events following a melting glacier, exposing bare rocky terrain.
b. The colonization of an empty region by long-lived plant species.
c. Community replacement on lands abandoned by a farmer.
d. A forest community that is relatively stable over time.

HOW DO YOU DO THE CALCULATIONS FOR #20?
3. . It was recently discovered that an amoeba (a single celled organism) falls asleep (goes “dormant”) when exposed to valium. Humans also fall asleep when exposed to valium. The amoeba releases a chemical resembling valium that is almost identical to a chemical released by the human brain.
This example best illustrates which theme in biology?
a. Unity within diversity
b. Structure and function
c. Acquiring and using energy
d. Homeostasis
4. Pyrodictium are single-celled organisms, lacking a nucleus. They live near deep-sea active volcanic openings preferring acidic conditions and temperatures above 100 degrees Celsius (i.e., a temperature above boiling if at sea level) and die at temperatures below 82ºC. Their genetic material was unlike any other single-celled organism known to humans before 1980.
In what domain is Pyrodictium?
a. Bacteria
b. Archaea
c. Eukarya
d. Prokarya
15. If an overlap develops between the ranges of two closely related species, and if the species occupy the same niche in the zone of overlap, what will probably happen in the zone of overlap?
a. Both species will coexist.
b. A new species will arise.
c. One species will take over and drive the other species out
d. Mutualism will exist between the two species.
17. All organisms require certain nutrients for survival and reproduction. Suppose a particular bacterial population thrives only in the top five millimeters of lakes. Suppose a microscopic plant population also thrives only in the top five millimeters of lakes. When the bacterial and plant populations are floating together, the bacterial population is reduced to 20% of the number it was when floating in the absence of plants. What does this situation likely illustrate?
a. Species diversity of a community
b. Niches of two species are separate and distinct.
c. One population serving as a resource for another population.
d. Interspecific competition.
18. What conditions might occur in a country displaying zero population growth?
a. Immigration equals emigration.
b. A population pyramid is larger at its base than at its tip.
c. Birth rate is greater than death rate.
d. The demand for new elementary schools is greater than the demand for retirement homes.
19. What would be an example of primary succession?
a. Events following a melting glacier, exposing bare rocky terrain.
b. The colonization of an empty region by long-lived plant species.
c. Community replacement on lands abandoned by a farmer.
d. A forest community that is relatively stable over time.
20. If there are 1000 metric tons of producers in an ecosystem, about how much of the energy in those producers will be available to secondary consumers in this ecosystem?
a. 100%
b. 50%
c. about 10%
d. about 1%
e. about 0.1%

1.
a) an area has a high number of species that exploit most of the available ecological opportunities.
b) an organism has a very stable set of features and capabilities over long spans of evolutionary time.
c) an organism colonizes an isolated area that is habitable but relatively devoid of life.
d) an organism colonizes an area that already has a high level of existing species diversity.
2. Which of the following statements regarding the definition of species is FALSE?
a) Taxonomy is the branch of biology concerned with naming and classifying the diverse forms of life.
b) The ecological species concept identifies species in terms of their ecological niches.
c) The phylogenetic species concept defines a species as a set of organisms with a unique genetic history.
d) The morphological species concept relies upon comparing the DNA sequences of organisms.
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7. According to the nonequilibrial model of succession,
a. chance events such as dispersal and disturbance play major roles in succession, and species composition remains in flux
b. species diversity is greatest in the climax community
c. when succession reaches a climax community, only extinctions make room for new colonists
d. the communities with the greatest diversity have the greatest resistance to change
e. early colonizers are r-selected and later community members are K-selected
8. Two species of Anolis lizards are often found perched and feeding in the same trees. Species I is usually found in the upper and outer branches, species II usually occupies shady inner branches. An ecologists removes one or the other species and observes changes in the remaining species’s distribution in the trees. Species I is found throughout the branches of trees in which it is now the sole occupant. Species II is still found in the shady interior when it is the sole occupant. What does the ecologist conclude from these experimental results?
a. species I is the better competitor
b. species I is not a shade-tolerant species
c. the fundamental niche of species II is identical to its realized niche
d. the fundamental niche of species II is larger than its realized niche
e. the fundamental niche of species I is identical to its realized niche