3. GUIDELINES
1. Open your camera all throughout the class hours
2. Close your mic during discussion or if someone is talking
3. Click raised hand button before talking
Avoid the following settings below:
Comfort Room
Bed
Vehicle
Highway
Mall
5. "Where focus goes, energy flows. And if
you don't take the time to focus on what
matters, then you're living a life of
someone else's design." ~ Tony Robbins
7. Activity 1
Task description:
Each group has assigned question.
Every group will choose one representative to answer
the question.
The timer will start after I’m done reading the
question. After 10s only
If he/she cannot answer the question correctly
he/she will choose the other group to answer the
question.
If the selected group answered it correctly the points
goes to that group and then they will answer their
assigned questions and so on.
8. The group that has most points will be the sun of the day.
Note: They will only select the group that has zero points or less
points
Sun = 20 pts
Energy = 18 pts
Producers= 16 pts
Consumers= 14 pts
10. Group 1
The word autotroph comes from the
Greek words auto, meaning “self”;
If auto means self then what is the word ‘troph’
means?
-troph means “to feed” or “to nourish.”
11. Group 2
If autotrophs is an organisms than can generate their own food,
then how about Heterotrophs?
12. Group3
It is a process by which plants use sunlight, water, and
carbon dioxide to create oxygen
and energy in the form of sugar.
13. GROUP 4
What type of heterotrophs is an
organism that eat both plants and
animals?
19. RESULTS
GROUP 1= 1
GROUP 2=2
GROUP 3=2
GROUP 4=2
The group that has most
points will be the sun of the day?
Sun = 20 pts
Energy = 18 pts
Producers= 16 pts
Consumers= 14 pts
22. OBJECTIVES:
At the end of the lesson, the students should be
able to;
a. understand the flow of energy and matter
in ecosystem,
b. create the flow of energy and matter in
ecosystem, and;
c. appreciate the importance of the flow of
energy and matter in ecosystem.
23. Flow of Energy and Matter in Ecosystem
PRIMARY SOURCE OF ENEGY
NEED ENERGY TO SURVIVE
24. Autotrophs- can
make their own food
Auto- “self”
Trophs- “to feed, or
“to nourish”
25. Photosynthesis – Photo- light
Synthesis – putting together
Photosynthesis- the process by which
green plants and certain other organisms
transform light energy into chemical energy
autotrophs combine sunlight, water,
and carbon dioxide to make glucose
(a type of sugar) and oxygen.
28. Energy moves through an ecosystem in a single direction.
Producer Consumer
Decomposers
29. Producers –
autotrophs
they obtain their energy directly from the sun.
Autotroph use glucose directly to make their own
cellular energy in the form of ATP through the
process of cellular respiration.
Cellular respiration- is the process through
which cells convert sugars into energy.
31. Autotrophs may be bacteria and other microscopic organisms
Cyanobacteria
- type of photosynthetic bacteria that live in some wet
ecosystems.
-these organisms are microscopic
-can form visible blooms
32. Algae
-important autotroph in aquatic ecosystems
can range from microscopic single-celled organisms
to the large kelp you can find in the ocean or washing up on
shore.
33. Sunlight is the main energy
source for all life on Earth.
But what about very deep in
the ocean where the sunlight
does not penetrate?
34. Some producers in these areas
are adapted to obtain their energy
from inorganic compounds
such as hydrogen sulfide
to produce the carbon-containing
sugar molecules
necessary to maintain life.
35. Chemotrophs
The primary food source in areas
without sunlight.
They are the main reason why life
can exist in these extreme
environments.
37. Classification of Consumer or Heterotrophs
HERBIVORE- heterotrophs that obtain their matter and
energy by feeding directly and only on producers.
ex
38. Carnivore- is an organism that mostly eats meat, or the flesh of
animals. Sometimes carnivores are called predators.
Ex.
LION Wolves Shark
39. Omnivores
are Heterotrophs that sometimes consume producers and other times
may consume other heterotrophs.
Ex.
Raccoons Bear
HUMANS
40. Detritivores (also known as detrivores, detritus feeders, or
detritus eaters)
-are heterotrophs that obtain nutrients by consuming detritus
(decomposing plant and animal parts as well as feces).
They also act as the cleaner of the earth
42. Scavengers
are heterotrophs that eat animals that have already died.
-helps clean up dead and decaying organisms
Ex.
Vulture Crow Beetle
43.
44.
45. DECOMPOSERS
-will break down dead and decaying organisms to release
nutrients back into the ecosystem to be cycled back through.
ex.
Mushroom Molds Earthworm
46. What are the differences between Scavengers
and Decomposers?
48. Transfer of Energy and Matter Pathways
Food chain and food web-
show movement of energy and
matter through an ecosystem
Energy and matter
-begin to move throughout the
ecosystem when a producer
uses photosynthesis to create
the sugar it needs to carry out
life processes.
49. Food chain
-Arrows indicate the
movement of energy as
each organism is eaten.
Apex predators
Consumers at the highest
level of the
food chain that no longer
have predators
50. A food web
-paints a more
complex picture of the
ecosystem.
-It shows all the
interrelated food
chains within an
ecosystem.
-more realistic
51. 1. In the figure above, What do you think would
happened if the zebra will be removed in the food web?
2. What do you think would happen if the organism that was
removed from the food web was an apex predator?
52. When a top predator is removed from an ecosystem,
a series knock-on effects are felt throughout all the
levels in a food web,
as each level is regulated by the one above it. This is
known as a trophic cascade.
The results of these trophic cascades can lead to an
ecosystem being completely transformed.
53.
54. Trophic Levels and Energy
The steps of a food chain or food
web are called trophic levels.
Producers- occupy the bottom
Consumers- occupy higher trophic level
55. Trophic Levels and Energy
The steps of a food chain or food
web are called trophic levels.
Producers- occupy the bottom
Consumers- occupy higher trophic level
56. Energy Pyramid
-as you move up through the trophic
levels, the amount of available
energy decreases.
Sun supplies producers with massive
amounts of energy, only about 10%
of this energy is available
to the consumers at the next
trophic level.
58. Some of it is used to fuel body processes
such as;
growth,
repair, and ;
reproduction.
Most of it is transferred to the atmosphere
as
heat
59. Biomass pyramids
Show the total mass of organisms at
each trophic level
The size of the base of the pyramid
can vary depending on the type of
ecosystem.
60. For example, in a forest in which the
primary food source may be trees that are
the food and energy source for many insects
and mammals, the number of trees is
actually less than the number of primary
consumers.
61. What is the Transferred Energy and Matter Used
For?
The energy and matter obtained by one trophic
level from the next are either stored or used for a
variety of cellular processes such
as metabolism or building new cellular structures
and proteins.
62. only 10% of the energy is transferred from one trophic
level to the next.
So what happens to the remaining 90%?
The law of conservation of energy states that energy
cannot be created or destroyed.
Therefore, the remaining 90% of energy that is not
transferred from one trophic level to the next is not
lost. Instead, it is transferred as heat to the
environment through the processes of growth,
respiration, and defecation.
63. What happens to the remaining 90%?
The law of conservation of matter states
that matter cannot be created or destroyed.
As one organism is eaten by another,
elements such as carbon, hydrogen,
nitrogen, and oxygen are transferred. These
elements are being continually cycled
through the atmosphere.
64. For example, when animals give off CO2 as a byproduct of
respiration, plants will take it back up for photosynthesis
As organisms die, decomposers break down their components
and the atoms and molecules are absorbed into the soil.
65. These atoms and molecules are used as
nutrients by plants for growth.
We can get these nutrients back into our
bodies by eating the plants.
As you can see, the atoms and molecules
necessary for life are never destroyed or
created. Instead, they are just cycled
throughout the ecosystem.
70. ACTIVTY 2: Oral Recitation
Group activity
Task description: Same group in activity 1, choose a
representative to answer question orally. Give the meaning of the word
picked randomly by your teacher based on your understanding.
Minimum of 1 sentence maximum of 3 sentences. 5 points each question
