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SCIENCE IV
LEARNING ACTIVITY SHEET
BENEFICIAL AND HARMFUL INTERACTIONS AMONG LIVING
THINGS
Second Quarter-Week 6
Prepared by:
LETTY L. MALECDAN
DepEd  CAR  Schools Division of Mountain Province
Natonin District  Apapawan Elementary School
Republic of the Philippines
Department of Education
CORDILLERA ADMINISTRATIVE REGION
SCHOOLS DIVISION OF MOUNTAIN PROVINCE
NATONIN MOUNTAIN PROVINCE
APAPAWAN ELEMENTARY SCHOOL
Published by:
Learning Resource Management and Development System
COPYRIGHT NOTICE
2023
Section 9 of Presidential Decree No. 49 provides:
“No copyright shall subsist in any work of the Government of
the Philippines. However, prior approval of the government agency
of office wherein the work is created shall be necessary for
exploitation of such work for profit.”
This material has been developed for the implementation of K-12
Curriculum through the Curriculum Implementation Division (CID)Learning Resource Management and Development System (LRMDS). It
can be reproduced for educational purposes and the source must be
acknowledged. Derivatives of the work including creating an edited
version, an enhancement or a supplementary work are permitted provided
all original work is acknowledged and the copyright is attributed. No work
may be derived from this material for commercial purposes and profit.
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PREFACE
This module is a project of the Curriculum Implementation Division particularly
the Learning Resource Management and Development Unit, Department of
Education, Schools Division of Mountain Province which is in response to the
implementation of the K to 12 Curriculum.
This Learning Material is a property of the Department of Education- CID,
Schools Division of Mountain Province. It aims to improve student’s performance
specifically in Mathematics.
Date of Development:
02/06/2023
Resource Location:
Schools Division of Mountain Province
Natonin District
Apapawan Elementary School
Learning Area:
Science
Grade Level:
4
Learning Resource Type:
Learning Activity Sheets
Language Used:
English
Content Standard:
The learner demonstrates understanding of
beneficial and harmful interactions occur
among living things and their environment as
they obtain basic need
Learning Competencies
Describe some types of beneficial and
harmful interactions among living things.
with Codes
S4LT-IIi-j-18
“Mankamuy”
IKSP:
Quarter / Week:
Q2/Wk 6
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ACKNOWLEDGMENT
The developer would like to acknowledge the following for their invaluable help
in developing this module:
Her colleagues at Apapawan Elementary School, and their School Head,
Rovelyn P. Beralas, for the encouragements and support in the development of this
Learning Acttivity Sheet;
To her family for the understanding ang love;
Above all, to Almighty God for the strength ang knowlegde he bestowed.
LLM
Pre-Evaluators
MELBA A. LIMANGAN
Teacher III
MYRAVIL B. INALDO
Teacher II
ROVELYN P. BERALAS
Principal II
JUNE II A. KIBLASAN
PSDS
DIVISION LRMDS STAFF
NIKKI T. MACABEO
Librarian II
ANDRES M. CUYASAN
Project Development Officer II
VALERIA P. GULLOD
EPSvr-Science
JOCELYN P. SAMIDAN
EPSvr-LRMDS
CONSULTANTS
KHAD M. LAYAG, Ed.D.
CES, Curriculum Implementation Division
VIRGINIA AMOGAN BATAN CESO VI
OIC, Assistant Schools Division Superintendent
SALLY BANAKEN ULLALIM CESO V
Schools Division Superintendent
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TABLE OF CONTENTS
Title
Page
Copyright Notice ……………………………………………………
ii
Preface ………………………………………………………………
iii
Acknowledgment ……………………………………………………
iv
Table of Contents ……………………………………………………
v
Learning Competency ……………………………………………….
1
Background Information ……………………………………….……
1
Activity 1… …………………...…………………………………….
3
Activity 2 ……………………………………………………………
3
Activity 3..............................................................................................
4
References …………………………………………………………..
4
Answer Key …………………………………………………………
5
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4
SCIENCE IV
LEARNING ACTIVITY SHEET
BENEFICIAL AND HARMFUL INTERACTIONS AMONG LIVING
THINGS
Second Quarter-Week 6
Prepared by:
LETTY L. MALECDAN
Name of Learner: ___________________________ Date: _____________
Grade Level/Section: __________________________Score: ____________
I. Learning Competency with code
Describe some types of beneficial and harmful interactions amog living things.
(Quarter 2, Week 6) S4LT-IIi-j-18
II.Background Information for Learners
There are interactions where both species benefit from the relationship
and there are also interactions where one species benefits but the other is neither
affected nor harmed.
Beneficial Interactions among Living Things in their Environment
1. Mutualism is a type of interaction where both species benefit from the
relationship.
Example: The butterfly benefits from the
nectar of the flower while the flower needs
the butterfly for pollination.
2. Commensalism is a type of interaction where one organism benefits while
the other is not harmed nor affected.
Example: The bird makes a nest in the
tree.The tree provides shelter and protection
to the bird without getting harmed.
Harmful Interactions among Living Things in Their Environment
1. Predation is a type of interaction where one benefits while the other one is
harmed or badly affected. The predator usually kills or attacks a smaller or
weaker animal called prey.
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Example: The cat kills the rat for food.
2. Parasitism is a relationship where one organism is benefited while the other
is harmed. The organism that benefits from the interaction is called parasite.
The one that is affected is called host.
Example: Mosquito is a parasite that drinks
human blood which causes human to get
itchy ang can even get them sick.
3. Competition is the striving or competing between organisms for the things
needed for survival. Organisms may compete for food, sunshine, space, shelter,
water and other things that they need for survival.
Example: Weeds and rice plants compete
on the nutrients from soil, water, sunlight
and space.
People in the locality of Natonin, Mountain Province practice the
“mankamuy” to remove the weeds in rice fields. This is to avoid competition
between the weeds and the rice plant.
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III. Directions: Read and understand the instructions in each activity before
answering. Write yours answers on your answer sheets.
IV. Activities
Activity 1. Interact with Me. Write what kind of relationship is being
described in each item.
Parasitism
1. The fleas on the body of the dog.
______________2. The frog snatches flying insects for food.
______________3. Fungi get their food from breaking down deadwoods to
release nutrients to living things.
______________4. The ant protect the tree as it attacks herbivorous animals
while the tree provides shelter and food for the ants.
______________5. The cattle egrets scoop up the insects disturbed by the
cattles when they move while the cattles are unaffected.
Activity 2. I Can Choose. Select and write the letter of the best answer.
1. What will happen if there are more predators than preys in an ecosystem?
A. The source of foods will increase.
B. The source of foods will decrease
C. The source of foods will remain the same.
D. Other animals will also decrease in number
2. Why relationship between a bee and a flower is considered mutuality?
A. The bee benefits from the interaction because of the nectar it gets
from the flower.
B. The flower benefits from the interaction because of the pollen grain
being transferred by the bee from one flower to another.
C. Both the bee and the flower benefit from the interaction because of
the good things that contribute to their development.
D. The bee benefits from the interaction while the flower is affected.
3. You put twelve small fish in an aquarium which contains three gallons of
water. You fed them with the right amount of food. After five days, some of the
fish died. Why did it happen?
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A.
B.
C.
D.
The smelly and cloudy water in the aquarium was not replaced.
The aquarium did not have enough temperature range.
There was no enough space for the number of fish.
The aquarium was moved to another place.
4. One example of commensalism is when the plant like fern is attached on a
branch of a tree. Why is the interaction called commensalism?
A. Both the branch of a tree and a fern benefit from each other.
B. Only the branch of a tree is benefitted from the relationship.
C. A fern benefits from the relationship while the branch of a tree is
neither harmed nor benefitted.
D. They compete with each other.
5. Which of the following pairs of organisms has harmful interactions?
A. a snake and a rat
B. orchids and trunk of a tree
C. a bird’s nest and a tree
D. butterflies and flowers
Activity 3. Draw Me
Draw 1 beneficial interaction and 1 harmful interaction you can see in the
community. Use the rubrics below as your guide.
Originality
Creativity
Impact
Total
5
5
5
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V. Reflection
Complete the sentences below. Write yours answers on your answer
sheets.
In this lesson, I learned that __________________________________.
I enjoyed ______________________________________________________.
I want to learn more about _________________________________________.
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VI. Refferences
Milan,Liza-Vic S. Learning Activity Sheet, Department of Education 2020
Sarmiento, Helen M. Learning Activity Sheet 2020, Department of Education,
Republic of the Philippines.
VII. Answer Key
Activity 1
1. Parasitism
2. Predation
3. Mutualism
4. Mutualism
Activity 2
1.
2.
3.
4.
5.
B
C
C
C
A
Activity 3
Answers may vary
5. Commensalism
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