QUESTIONS (A): 1. How is biotic potential related to the rate at which a population will grow? 2. List three characteristics populations might have. 3. Why do some populations grow? What factors help to determine the rate of this growth? 4. Under what conditions might a death phase occur? QUESTIONS (B): 5. List four factors that could determine the carrying capacity of an animal species. 6. How do the concepts of birthrate and population growth differ? 7. How does the population growth cure of humans compare with that of bacteria on a petri dish? 8. How do r-strategists and K-strategists differ? 9. As the human population continues to increase, what might happen to other species? 10. All successful organisms overproduce. What advantage does this provide for the species? What disadvantages may occur?

1. Group 12:
1. PHAI MINEA [Leader: 0966153104] (ID: 2119055)
2. LAO SOKKEANG [0966973633] (ID: 2119639)
3. OL KIMMEY [098661176] (ID: 2120522)
4. RITH CHHAINGIM [0969071860] (ID: 2121245)
5. OSOTH RATANADAVID [086455494] (ID: 2119875)

2. REVIEW QEUSTIONS
QUESTIONS (A):
1. How is biotic potential related to the rate at which a population will grow?
2. List three characteristics populations might have.
3. Why do some populations grow? What factors help to determine the rate of this
growth?
4. Under what conditions might a death phase occur?
QUESTIONS (B):
5. List four factors that could determine the carrying capacity of an animal species.
6. How do the concepts of birthrate and population growth differ?
7. How does the population growth cure of humans compare with that of bacteria on a
petri dish?
8. How do r-strategists and K-strategists differ?
9. As the human population continues to increase, what might happen to other species?
10. All successful organisms overproduce. What advantage does this provide for the
species? What disadvantages may occur?

3. ANSWER
PART(A):
1. How is biotic potential related to the rate at which a population will grow?
Answer 1:
Biotic potential is described by the unrestricted growth of populations
resulting in the maximum growth of that populations. Biotic potential is the highest
possible vital index of a species; therefore, when the species has its highest birthrate
and lowest mortality.
2. List three characteristics populations might have.
Answer 2:
Three characteristics populations might have:
- Sex ratio-male vs female
- Natality (birth rate)
- Mortality (death rate).
3. Why do some populations grow? What factors help to determine the rate of this
growth?
Answer 3:
Reason for the expected population growth include increase in the number of
young married mothers, high fertility rates for some ethnic groups, and inadequate
sexual education and birth control provision.
- Population growth rate is affected by birth rates, death rates, immigration, and
emigration.
- If a population is given unlimited amounts of food, moisture, oxygen, and their
environmental factors, it will show exponential growth.
4. Under what conditions might a death phase occur?
Answer 4:
A death phase occurs when there is a declined in population size. This occurs
as a result of disease, increase predation, low food supply, toxins entering the
ecosystem, or any other limiting factor.
PART(B):
5. List four factors that could determine the carrying capacity of an animal species.
Answer 5:
List four factors that could determine the carrying capacity of an animal
species:
• Availability of raw materials (oxygen, water, oxygen)
• Availability of energy (sunlight)

4. • Collection of waste products and disposal means
• Interaction among other organisms.
6. How do the concepts of birthrate and population growth differ?
Answer 6:
A population growth is the birthrate plus immigration minus the death rate
plus emigration.The birthrate is the number of individual born per 1000 individual
each year.
7. How does the population growth cure of humans compare with that of bacteria on a
petri dish?
Answer 7:
Growth of bacterial cultures is defined as an increase in the number of bacteria
in a population rather than in the size of individual cells. The growth of a bacterial
population occurs in a geometric or exponential manner: with each division cycle
(generation), one cell gives rise to 2 cells, then 4 cells, then 8 cells, then 16, then 32,
and so forth.
8. How do R-strategists and K-strategists differ?
Answer 8:
R-strategists K-strategists
• Small organisms
• Never reach C.C
• Environment unstable
• Usually small
• Short life span
• Large amounts of young
• Little or no maternal care
• Large organisms
• Reach a stable population their carrying capacity
• Environment stable
• Tend to be larger
• Relatively long lived
• Relatively few young
• Much maternal care
9. As the human population continues to increase, what might happen to other species?
Answer 9:
As the human population grows, we destroy more habitat, kill more animals
for food, release more pollution into the atmosphere, soil, and water supply, all of
which increase the rate of extinction of species.
10. All successful organisms overproduce. What advantage does this provide for the
species? What disadvantages may occur?
Answer 10:

5. All successful organisms overproduce have advantage does this provide for
the species and disadvantages may occur:
• Disadvantage : They use a bt of main sources. It does not have enough homes
and food etc.
• Advantage: They provide the stable population, new place, new standard of
living, and new culture.