biological levels of organization

1. GRADE 7-Science
Teacher Mike

2. LIFE PERFORMANCE OUTCOME
As a Christ-centered Paulinian, I am courageous,
resourceful explorer and a problem solver demonstrating
my creativity and charism.

3. ESSENTIAL PERFORMANCE OUTCOME
Resolutely understand, address, and resolve issues or
problems of their communities.

4. INTENDED LEARNING OUTCOMES
Describe the different levels of Biological Organization from
cell to Biosphere

5. Whats New? Science trivia
• Who is the oldest person who lived on earth?
answer:
• Metsuselah according to the Bible, He lived for 969 years.

6. Why is it important to know the biological level of
organization?

7. What can you see on the picture?

8. Biology
• Biology is defined as the branch of science which deals
with the study of life of all the organisms on Earth.
• It is coined from the two Greek Words “Bios”which means
“life” and “logos” which means “study of”.

9. • All living things exhibit a unique and complex hierarchical
organization.
• This is arranged in ascending order or from lowest to the
highest level.

10. Example
• You are composed of many parts and each part has
specific function.
• Every part is interrelated and is necessary for your
continuous existence on this planet

12. 1. Cells
• The basic structural and functional unit of life.
• They provide structure for the body, take in nutrients from
food, convert those nutrients into energy, and carry out
specialized functions. Cells also contain the body's
hereditary material and can make copies of themselves.
examples: Prokaryotes, White
blood cells, Epithelial
cells, Bacteria, Yeast

13. 2.Tissues
• A group of cells that work together to perform a specific
task.
examples:
Epithelial,
Connective, Nervous,
Muscle

14. 3. Organs
• A group of different tissues that form a singular unit and
perform a similar function.
• examples: Heart, brain, kidney, skin

15. 4. Organ system
• A group of organs that interact to perform a similar
function,
• examples: Digestive system,
Excretory system

16. 5. Organism
• An individual living thing that can be unicellular or
multicellular.
• an individual living thing that carries on the activities of life
by means of organs which have separate functions but
are dependent on each other
• examples: Humans, Bird, Earthworm, Plant, Bacteria,
Yeast

17. 6. Population
• All organisms of the same group or species living in a
particular geographical area and capable of interbreeding.
• examples: Hawks, barred owls, and eagles on Davao

18. 7. Community
• An interacting group of various species in a common
location.
• examples: insects in the Pond, animals in the grassland

19. 8.Ecosystem
• It contains all the communities that interact in a specific
area.
• examples: Deciduous forest,Coniferous forest,

20. 9. Biosphere
• It is made up of all parts of the Earth where life exists.
• example: Earth, where life exists

22. EXERCISE
classify each picture into what level of organization it
belongs

23. EXERCISE

28. Highest Population Organ Systems
Lowest Tissues Organism
Community Organs Biosphere

29. word box
• 1.Organisms are characterized based on its organization.
It follows an order from lowest to highest,
__________ ,tissues, organs, _______ , organism
population, __________ ,ecosystem , biosphere.

30. • 2.Each part of a/n __________ is necessary for survival.
Whatever happens to any of these parts affect the others.

31. • 3.__________ are group of tissues in a living organism
that performs similar function.

32. • 4.When many cells of the same kind are together in a
group, it is called __________.

33. • 5.__________ are group of organisms belonging to the
same type that live in the same area.

34. • The __________ level of biological organization is called
Biosphere.

35. Side 1 Side 2 Side 3
Cells The basic structural and functional unit of life. Prokaryotes, White blood cells, Epithelial cells, Bacteria, Yeast
Tissues A group of cells that work together to perform a specific task. Epithelial, Connective, Nervous, Muscle
Organs A group of different tissues that form a singular unit and perform a similar function. Heart, brain, kidney, skin
Organ systems A group of organs that interact to perform a similar function, Circulatory system, Digestive system, Excretory system,
Organism An individual living thing that can be unicellular or multicellular. Humans, Bird, Earthworm, Plant, Bacteria, Yeast
Population All organisms of the same group or species living in a particular geographical area and capable of interbreeding. Hawks, barred owls, and eagles on Davao
Community An interacting group of various species in a common location
Pond, Grassland, Deep ocean, Forest of trees and undergrowth, Plants
inhabited by animals and rooted in soil containing bacteria and fungi
Ecosystem It contains all the communities that interact in a specific area. Deciduous forest, Coniferous forest,
Biosphere It is made up of all parts of the Earth where life exists. Earth, where life exists

36. Draw and label

37. ASSESMENT
• Directions. Choose the letter of the correct answer. Write
the letter of your answers in your Science activity
notebook.

38. 1.Which of the following is the simplest level of
ecological organization?
A. A population
B.A community
C.An ecosystem
D.An individual or species

39. 2.The organ systems of plants consist of the root and
shoot systems. Why is it important for these organ
systems to work together?
A.To grow and survive
B.To avoid pests and other animals
C.To avoid floods and strong winds
D.To survive droughts and earthquakes

40. 3.Which of the following differentiates organs from
tissues?
A.Organs and tissues are made up of cells.
B.Organs and tissues make up an organ system.
C.Organs make up organ system; cells make up tissues.
D.Organs make up organ system; tissues make up organs.

41. 4.What level of biological organization is made up of
a group of similar cells that perform a specific
function?
• A.Organ
• B.Organism
• C.System
• D.Tissue

42. 5.At which smallest level of organization in an
organism can the characteristics of life be carried
out?
A.Cell
B.Organ
C.Organ System
D.Tissues

43. 6.Which of the following DOES NOT belong to the
group?
A.Eyes
B.Large Intestine
C.Mouth
D.Stomach

44. For Item number 7, refer to the image below.
7.To which level of biological organization does the
picture belong?
A.Cell
B.Organ
C.Organism
D.Organism

45. 8.Which of the following is a population?
A.Mountain stream
B.All the frogs in a pond
C.Hawks, barred owls, and eagles on Davao
D.Blue-tailed skinks (lizards) and snakes around a barn

46. 9.What level of biological organization is being
referred to when many organ systems work
together?
A.Cells
B.Organ
C.Organism
D.Organ System

47. 11.How do you call a group of same species living
together?
A.Biome
B.Community
C.Ecosystem
D.Population

48. 12.Which is the correct sequence – from the lowest
to highest– of the levels of organization in an
organism?
A.Cells,Tissues, Organs,Organ systems,Organisms,Population
Community, Ecosystem, Biosphere
B.Cells Tissues Organs Organ systems
Organisms Community Population Ecosystem Biosphere
C.Cells Organs Tissues Organ systems
Organisms Population Community Ecosystem Biosphere
D.Cells Tissues Organs systems Organ Organisms
Population Community Ecosystem Biosphere .

49. 13.Which of the following units is the highest level of
biological system?
A.Biosphere
B.Community
C.Ecosystem
Population

50. 14.Which of the following statements is TRUE?
A.Groups of organs working together are called cells.
B.Groups of cells working together are called tissues.
C.Groups of organs working together are called organisms.
D. Groups of tissues working together are called organ
system

51. 15.How do you call the collection of organisms that
belong to different populations but all live in the same
area and interact with one another?
A.Community
B.Ecosphere
C.Ecosystem
D.Population