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Science
Quarter 2 - Module 3:
Different Levels of Biological
Organization from Cell to Biosphere

AIRs - LM
Science
Quarter 2 - Module 3: Different Levels of Biological Organization
from Cell to Biosphere
First Edition, 2020

Copyright © 2020
La Union Schools Division
Region I

All rights reserved. No part of this module may be reproduced in any form
without written permission from the copyright owners.

Development Team of the Module

Author: Riza Joy S. Asenci

Editor: SDO La Union, Learning Resource Quality Assurance Team
Illustrator: Ernesto F. Ramos, Jr., P II

Management Team:

ATTY. Donato D. Balderas, Jr.

Schools Division Superintendent
Vivian Luz S. Pagatpatan, Ph.D
Assistant Schools Division Superintendent
German E. Flora, Ph.D, CID Chief
Virgilio C. Boado, Ph.D, EPS in Charge of LRMS
Rominel S. Sobremonte, Ed.D, EPS in Charge of Science
Michael Jason D. Morales, PDO II
Claire P. Toluyen, Librarian II
 Science
Quarter 2 - Module 3:
Different Levels of Biological
Organization From Cell To
Biosphere
 Target

Hey! Look around you. Can you see diverse kinds of living things or
organisms? Can you name some? Are you one of them? Have you ever asked yourself
what makes up an organism?

In the earlier grades, you have learned that the human body is made up of
organ systems that work together, and that these organ systems are made up of
organs whose functions are related with each other. For example, the heart and the
blood vessels are organs that facilitate the circulation of blood and nutrients to the
different parts of the body; similarly, the esophagus, stomach, and intestines are
organs that work together for the digestion of food. The organs are made up of even
smaller structures: the tissues and cells.

Now, this module introduces you to the concept of levels of organization in an

organism. You will learn that whatever happens to the smaller structures will affect
the bigger structures and eventually, the whole organism.

Learning Competency: By the end of this module, you are expected to:

• describe the different levels of biological organization from cell to biosphere

( S7LT-IIc-3 ).

Subtasks: By the end of this module, you are expected to:

1. define the different levels of biological organization in an organism;

2. explain the interaction of cells, tissues, organ systems in maintaining the life
of an organism;
3. illustrate the coordinated function of cells, tissues, organ systems in
maintaining the life of an organism;
4. recognize the necessity of an organized system for proper growth, development
and survival of the organisms.
 Pre-test

Directions: Read each item carefully. Write only the letter of the correct answer
for each question. Use a separate sheet for your answers.

1. At which smallest level of organization in an organism can the characteristics

of life be carried out?
A. Cell C. Organ System
B. Organ D. Tissue

2. What refers to any living system like animals, plants, or fungi?

A. Cell C. Organism
B. Organ D. Tissue

3. The following are organisms EXCEPT one. What is it?

A. Frog C. Orchid
B. Mushroom D. Water

4. Which of the following is an organ of the digestive system?

A. Blood C. Kidney
B. Heart D. Stomach

5. What level of biological organization in organisms does the stomach belong

to?
A. Cell C. Organ system
B. Organ D. Tissue

6. Which of the following refers to the organized groups of cells that carry out a
specific function in the body?
A. Cell C. Organism
B. Organ D. Tissue

7. The organ systems of plants consist of the root and shoot systems. Which of
the following belong/s to the shoot system?
A. Flower C. Stem
B. Leaves D. All of these

8. What organ system helps the body eliminate metabolic wastes and maintains
internal balance?
A. Circulatory System C. Excretory System
B. Muscular System D. Respiratory System

9. Which of the following describes an organ system?

A. Groups of cells working together
B. Groups of organs working together
C. Groups of tissues working together
D. The basic unit of structure and function of organisms

10. Which of the following is the correct sequence of the levels of biological
organization in an organism- from smallest to biggest?
A. Organism Organ system Organ Tissue Cell
B. Cell Tissue Organ Organ system Organism
 C. Tissue Cell Organ Organism Organ system
D. Organ system Organism Organ Cell Tissue

11. Each part of an organ system plays a specific function. Which of the
following structures matches its function?
A. Kidney: Circulation
B. Heart: Respiration
C. Lungs: Circulation
D. Stomach: Digestion

12. The heart pumps blood to the different parts of the body. Which organ
system does the heart belong to?
A. Circulatory System
B. Digestive System
C. Excretory System
D. Respiratory System

13. Plants are also made up of organ systems: the root and the shoot systems.
How do plants benefit from their root system?
A. They produce flowers.
B. They manufacture food.
C. They provide strength and support.
D. They obtain water and nutrients from the soil.

14. Which of the following correctly 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 tissues; tissues make up organ systems.
D. Organs make up organ systems; tissues make up organs.

15. What might happen to a person if he/she has diseased cells in his/her
body?
A. Only the diseased cells would suffer.
B. The diseased cells affect the tissue but not the organ.
C. The diseased cells affect the tissue, organ, and organ system.
D. The diseased cells affect the tissue, organ, organ system and the whole
organism.
 Jumpstart

Activity 1: “Fill Me Up”

Direction: Each shape stands for a missing letter. Complete the words inside the
box below to discover the levels of biological organization in an organism.
Then answer the questions that follow.

RG N

RG N SM

RG N SYST M

T SS

C LL

Questions:

1. Based on the activity, what are the different levels of organization in an

organism?

2. How can you arrange this levels from smallest to largest?

 Discover

Activity 1: “Organism- What Makes You Up?”

Direction: Read the selection below and answer the questions that follow.
If you look around you, there are many living things. All these living creatures
are organisms. You are an organism just like the plants and animals as shown in
figure 1.

But, what makes you up and the other organisms around you? An Organism
is made up of organ systems ( see figure 2 ), and Organ systems are made up of
organs. The circulatory system is one of the organ systems with the heart, blood
vessels, and blood as its organs. The heart pumps and circulates blood to the
different parts of the body through the blood vessels. The excretory system is another
organ system. It is made up of different organs which include a pair of kidneys that
help the body eliminate metabolic wastes and maintain internal balance. There are
other organ systems that you will learn in the next grade levels.

Figure 2. Human Organ Systems

 An Organ is made up of tissues. The heart, kidneys and other organs are
made up of tissues. This tissue is made up of cells – the basic units of structure and
function in organisms. These cells are grouped together to form complex structures:
tissues, organs, organ systems that make up the organism ( see figure 3 ). If certain
cells were diseased or injured in an organism, the tissue would suffer, the organ,
organ system and the whole organism would suffer.

Figure 3. Levels of biological organization in an organism

Plants are also made up of organ systems: the root and shoot systems ( see
figure 4 ). The root system absorbs water and nutrients; the shoot system moves
them to the different parts of the plant. Flowers are the reproductive organs of plants.
Together with the leaves and the stems, they make up the shoot system. The parts
of the root and shoot systems of the plants are also made up of tissues and cells.

Figure 4. Plant’s Organ System

Questions:

1. What makes up an organism?

2. What is an organ system? Give at least 3 examples.
 3. What are the organs that make up the circulatory system?
4. What is cell?
5. How would you arrange the different levels of biological organization- from
smallest to biggest?
6. If a certain tissue in the heart is injured or diseased, what will happen to the
next levels of biological organization?
7. What are the organ systems of plants?
8. How does the root system help in the survival of the plant?

Activity 2: “Who Am I?”

Direction: Based on the selection you have read in activity 1, describe the different
levels of organization. Write your answer in the second column ( Description ).

Level of
Organization Description

1. Cell

2. Tissue

3. Organ

4. Organ System

5. Organism
 Explore

Activity 1. “Where Should I Go?”

Direction: Fill in the table below with the correct data. Choices for each column are
given in the next page. For Columns 2 and 3, Write the letters only.

Level of organization Example Description

( smallest to biggest )

2.

3.

4.

5.

CHOICES:

Column 1 ( Level of Organization ): Cell; Organ; Organism; Organ System; Tissue

Column 2 ( Example ):

A B C D E

Column 3 ( Description ):
A. The basic unit of structure and function of organisms
B. Groups of cells working together
C. Groups of organs working together
D. Groups of tissues working together
E. Groups of organ systems working together

Deepen

Activity 1: “You Complete Me”

Direction: Fill in the blanks with the correct answer to complete the big ideas that
you have learned from this module.

1. Organisms are made up of parts: _____________, _____________, ____________

and _____________.

2. Whatever happens to any of these parts will affect the other parts and the
whole ______________.

3. We need to keep our _____________ and ____________ healthy to make our

organs, organ systems, and the whole body healthy.

4. To stay healthy, we need to ________________________________________ which

may include the plants- vegetables and fruits in our garden and the animals
in our farm.

5. Like us, these plants and animals are also ______________. They have basic
needs that include proper care for them.
 Gauge

Directions: Read each item carefully. Write only the letter of the correct answer
for each question. Use a separate sheet for your answers.

1. Which is the correct sequence of the levels of biological organization in an

organism- from smallest to biggest?
A. Organism Organ system Organ Tissue Cell
B. Cell Tissue Organ Organ system Organism
C. Tissue Cell Organ Organism Organ system
D. Organ system Organism Organ Cell Tissue

2. Which of the following is an organ of the circulatory system?

A. Heart C. Lungs
B. Kidney D. Stomach

3. If organ systems make up an organism, what make up an organ system?

A. Cells C. Organs
B. Organ Systems D. Tissues

4. Plants also have organ systems. Which plant organ does NOT belong to the
shoot system?
A. Flower C. Root
B. Leaf D. Stem

5. What level of biological organization does the excretory system belong to?
A. Cell C. Organ System
B. Organ D. Tissue

6. Each part of an organ system plays a specific function. Which of the following
structures does NOT match its function?
A. Kidney: Excretion C. Heart; Circulation
B. Lungs: Circulation D. Stomach; Digestion

7. The following are structures that make up an organism. Which one is tissue?

A. C.

B. D.

8. Which of the following statements is TRUE?

A. Group of organs working together is called cell.
B. Group of cells working together is called tissue.
C. Group of organs working together is called organism.
 D. Group of tissues working together is called organ system.

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

10. Cancer cells destroy tissues and organs. What does this say about the effects
of diseased cells on the higher levels of organization in an organism?
A. Diseased cells affect only the next higher level of organization- tissue.
B. Diseased cells do not affect the higher levels of organization in an
organism.
C. Cancer involves only certain kinds of cells and does not affect the whole
organism.
D. Diseased cells damage the higher levels of organization-tissue, organ,
organ system, and the whole organism.
11. How do plants benefit from their root system?
A. It manufactures food.
B. It produces flowers and fruits.
C. It provides strength and support.
D. It obtains water and nutrients from the soil.

12. The function of the kidneys is to filter the metabolic wastes from the blood.
What might happen to a person if his/her kidneys fail to function?
A. His/ her kidneys will be damaged.
B. His/ her excretory system will not be affected.
C. The diseased kidneys will not affect the him/her.
D. He/ she will suffer and needs to undergo dialysis treatment.

13. Joyce loves to eat junk foods and salty foods. One day, she experienced
difficulty in urinating accompanied by severe pain in her side and back. Which
organ has a problem in her situation?
A. Brain C. Kidney
B. Heart D. Stomach

14. Peter’s father was hospitalized because of chest pain and difficulty of
breathing. His laboratory examination showed high cholesterol in the blood.
Which organ system is mostly affected in his condition?
A. Circulatory System C. Excretory System
B. Digestive System D. Skeletal System

15. Smoking causes diseases in the respiratory system which may damage the
tissues and organs. What is the effect of diseased cells due to smoking, on the
higher levels of organization in an organism?
A. Diseased cells do not affect the other parts of an individual.
B. Smoking affects only the lungs and the respiratory system.
C. Smoking affects only the organs of the respiratory system but not the whole
individual.
D. Smoking damages the cells which will affect the tissues, organs, organ
systems and the whole individual.
 1. B 1. organ system, organ,
2. A tissue, cell
3. C 2. organism
3. cell; tissue 1. cell- smallest unit of
4. C structure and function in
4. eat nutritious foods
5. C an organism
5. organisms
6. B 2. tissue- group of cells
7. C Deepen working together
8. B 3. organ- group of tissues
9. D working together
4. organ system- group of
10.D
organs working together
11.D 1. cell A A 5. organism- any living
12.D 2. tissue C B thing/group of organ
13.C 3. organ D D systems working together
14.A 4. organ B C
15.D system
5. organism E E
Gauge Explore Discover ( Activity 2 )
1. A
2. C
3. D
1. organ system, organ, tissue, cell
4. D
2. group of organs that work together
3. heart, blood vessels, blood 5. B
4. basic unit of structure and 6. D
Organ
function of organisms 7. D
Organism
5. cell – tissue – organ – organ 8. C
Organ System
system – organism 9. B
Tissue
6. The organ, organ system and the 10.B
Cell
whole organism will suffer.
11.D
7. root system, shoot system
8. obtain water and nutrients from 12.A
the soil 13.D
14.D
15.D
Discover ( Activity 1 ) Jumpstart Pre- Test
Answer Key
References

Books

Gutierrez, Marlene M. 1999. Science and Technology for the Modern World 1.
Makati City: Belgosa Media System Inc.

Salmorin, Delia G. 2009. Skill Booster.Com II ( Biology). Quezon City: Bookman

Inc.

Pavico, Ma. Josefina F. 2013. Exploring Life Through Science: The New Grade 7.
Philippines: Phoenix Publishing House,Inc.

Asuncion, Alvie J., et al. 2017. K to 12 Science Grade 7 Learners Material. First
Edition. Pasig City: Bureau of Learning Resources (DepEd-BLR).

Websites

https://plato.stanford.edu/entries/levels-org-biology/

https://open.oregonstate.education/aandp/chapter/1-2-structural-oragnization-
of-the-human-body/

https://openoregon.pressbooks.pub/mhccbiology101/chapter/levels-of-
organization-of living-things/