Adaptation_Population growth_Capacity growth.pptx

1. 𝐁𝐢𝐨𝐝𝐢𝐯𝐞𝐫𝐬𝐢𝐭𝐲 𝐚𝐧𝐝
𝐄𝐯𝐨𝐥𝐮𝐭𝐢𝐨𝐧
𝐔𝐧𝐢𝐭 𝐈𝐈𝐈: 𝐋𝐢𝐯𝐢𝐧𝐠 𝐓𝐡𝐢𝐧𝐠𝐬 𝐚𝐧𝐝 𝐓𝐡𝐞𝐢𝐫 𝐄𝐧𝐯𝐢𝐫𝐨𝐧𝐦𝐞𝐧𝐭

2. Rearrange Me!
An individual or form of life composed of mutually
interdependent parts that maintain various vital
processes.

3. Rearrange Me!
An individual or form of life composed of mutually
interdependent parts that maintain various vital
processes.

4. Rearrange Me!
It refers to the group of similar organisms living on
same place at a given time.

5. Rearrange Me!
It refers to the group of similar organisms living on
same place at a given time.

6. Rearrange Me!
It is a term that describes how varied living things are
in a specific area.

7. Rearrange Me!
It is a term that describes how varied living things are
in a specific area.

8. Rearrange Me!
It refers to a biological community of interacting
organisms and their physical environment.

9. Rearrange Me!
It refers to a biological community of interacting
organisms and their physical environment.

10. Rearrange Me!
It is the process by which different kinds of living
organisms, thought to have developed and diversified
from earlier forms during the history of the earth.

11. Rearrange Me!
It is the process by which different kinds of living
organisms, thought to have developed and diversified
from earlier forms during the history of the earth.

12. 𝐖𝐡𝐚𝐭 𝐢𝐬 𝐲𝐨𝐮𝐫 𝐕𝐚𝐥𝐮𝐞?

13. 1. Direct Economic Value
The species is considered to have direct economic value if
their products are sources of food, medicine, clothing,
shelter, and energy. It is consumable and commercial.
Crop Production Medicine Logging

14. 2. Indirect Economic Value
A species has an indirect economic value if there are benefits
produced by the organism without using them.
Prevent soil erosion
and flooding
Absorbs water
pollutants
Maintains nutrients in the
soil

15. 3. Aesthetic Value
A lot of species provides visual or artistic enjoyment, like a
forested landscape and the calming beauty of a natural park;
or they may be used for spiritual meditation like the Prayer
Mountains.
SunFlora Farm Landscape Meditation

16. Directions: Read the following scenarios and determine whether
they represent direct economic value, indirect economic value, or
aesthetic value. Write D for direct economic value, IN for indirect
and A for aesthetic economic value.
Exercise: Direct Economic Value, Indirect Economic Value, and
Aesthetic Value

17. 1. A farmer grows corn and sells it to a local grocery store.
2. A company builds a factory in a small town, creating job
opportunities for the local residents.
3. A city park is beautifully landscaped with colorful flowers and
sculptures, attracting tourists and locals who enjoy its beauty.
4. An artist paints a mural on the side of a building, enhancing
the visual appeal of the neighborhood.
5. A company invests in renewable energy sources, reducing
carbon emissions and promoting environmental sustainability.

18. Population that are growing or
diminishing can be indicators of
potential problems in the organism
environment.
Why is population size
or decreasing?

19. Genetically Modified Organism (GMO)
Reasons behind population increase or decrease
Birth rate (natality)
Death rate (mortality)

20. Exercises:
Tell something about the illustration in relation to population.
A B

21. Population Density
Population density refers to the number
of organisms per square unit.
If the population density is very high, it
means there are lot of organisms crowded
in an area, If the population density is low
that means there are very few organism in
the area.

22. Two factors in limiting population growth
1. Density-dependent
It is the factor that regulates population growth in influenced by
population density.
It comes when a population
reaches certain number of
organisms that has enough
resources (food, shelter, water).

23. Refers to the maximum
number of organisms that can
be supported or carried by the
environment.
Population Carrying Capacity

24. Two factors in limiting population growth
2. Density-Independent
factor that can stop growing can be such thing as natural
disaster, temperature, sunlight and human activities.
It is not directly influence changes in population growth.

25. Exponential Growth vs. Logistic Growth

26. Exponential Growth
There are plenty of resources
available for all organisms. In
case, more births are recorded
than deaths in organisms. Here
resources are unlimited, so it
results to J-shape curved

27. Logistic Growth
There are limited resources, as a
result population expansion
decreases when resources scarce,
it levels off resulting to S- shape
curve.

28. Directions: Observe the graph of population growth and carrying
capacity and discuss the relationship between the two concepts.
1. At what point does the population
growth rate start to slow down?
2. What factors contribute to the
slowing down of population growth?
3. How does the concept of carrying
capacity relate to each example?
4. What are the potential consequences
if a population exceeds its carrying
capacity?

29. Limiting Factors that depends on Population Density
1. Disease and parasites- Infectious disease spread faster in
densely populated areas.
-Example – High recorded cases of Covid- 19 infections
in NCR in the First/Second Quarter of 2020

30. Limiting Factors that depends on Population Density
2. Competition for Resources – Organisms with better
adaptation to obtain (food) resources will be able to
reproduce more often and its population will grow.
-Example – group of lion competing with group of
tiger for food.

31. Limiting Factors that depends on Population Density
3. Predation- Plenty of prey are available, predators will be
able to eat sufficiently, thus they have energy to reproduce
more often, and its population will grow.
-Example – Group of frogs eating dragonflies in a pond.

32. Limiting Factors that depends on Population Density
4. Emigration – It refers when an individual or organism leave
and go to a new area where they can find enough resources
for survival and reproduce.
Example – A group of birds move from one place to another in
searching for food, stays there for survival and reproduce.

33. Directions: Analyze the graph below then answer the following
questions.
1. Which population has the fastest increase in
population size?
2. Which organism has a declining population size?
3. What will happen to the population size of the
prey if the population size of the predators
continues to increase?
4. If the food in the ecosystem continues to deplete
due to overcrowding, what will happen to the
population size of predators?
5. How is population growth affecting carrying
capacity?

34. Quiz # ____: Multiple Choice
1. Manila’s population in early 2021 is 14, 158, 573. Since 2015, its
population has increased by 235, 121 which constitutes 1.69%
annual change. Which of the following factors has the greatest
impact on increasing population growth rate in Manila?
a. Climate c. Mineral Deposits
b. Employment d. Recreation

35. Quiz # ____: Multiple Choice
2. The carrying capacity of Mico’s aquarium is for five fishes only
but he placed ten fishes instead. Describe the effect on the
resources if the population of fishes is above the carrying
capacity.
a. Resources will be plenty.
b. Resources will be unlimited.
c. Resources will just be exact.
d. Resources will be insufficient

36. Quiz # ____: Multiple Choice
3. What will happen if a population grows larger than the carrying
capacity of the environment?
a. death rate may rise
b. birth rate may rise
c. population size will increase
d. carrying capacity will change

37. Quiz # ____: Multiple Choice
4. Last month, a pest that destroys palay (Oryza sativa) infested
Barangay Maliwalas, which resulted to a decline in the palay
population. What do you think would happen to the palay-eating
bird population if the infestation would continue?
a. The bird population would infinitely increase.
b. The bird population would decrease.
c. The bird population would stay the same.
d. The bird population would be stable.

38. Quiz # ____: Multiple Choice
5. In the year 1990, the population of Butanding in Sorsogon
started to decrease due to density-independent limiting factor. It
is assumed that there is ________.
a. competition on food among the population of Butanding
b. predation on smaller Butanding
c. bycatch incident increases
d. spread of disease in the population of Butanding