SHS Earth and Life Science Activity Sheet Quarter 2 – MELC 2 Week 2 Unifying Themes in The Study of Life REGION VI – WESTERN VISAYAS i Earth and Life Science Activity Sheet No. 2: Unifying Themes in The Study of Life First Edition, 2020 Published in the Philippines By the Department of Education Region 6 – Western Visayas Republic Act 8293, section 176 states that: No copyright shall subsist in any work of the Government of the Philippines. However, prior approval of the government agency or office wherein the work is created shall be necessary for exploitation of such work for profit. Such agency or office may, among other things, impose as a condition the payment of royalties. This Learning Activity Sheet is developed by DepEd Region 6 – Western Visayas. ALL RIGHTS RESERVED. No part of this learning resource may be reproduced or transmitted in any form or by any means electronic or mechanical without written permission from the DepEd Regional Office 6 – Western Visayas. Development Team of Earth and Life Science Activity Sheet Writer: Gemma S. Capalihan Editor: Glenn Mark Fallera Schools Division Quality Assurance Team: Regina N. Alkonga, Noemi A. Salvador, Stella J. Tacuyan Division of Iloilo City Management Team: Ma. Luz M. De Los Reyes, Ernesto F. Servillon Jr., Arlo L. Villalva, Leila G. Valencia, Regional Management Team: Ma. Gemma M. Ledesma, Josilyn S. Solana, Elena P. Gonzaga, Donald T. Genine, Rovel R. Salcedo, Moonyeen C. Rivera, Anita S. Gubalane, Minda L. Soldevilla, Daisy L. Lopez, Joseph M. Pagalaran ii Introductory Message Welcome to Earth and Life Science of Grade 11! The Learning Activity Sheet is a product of the collaborative efforts of the Schools Division of Iloilo City and DepEd Regional Office VI - Western Visayas through the Curriculum and Learning Management Division (CLMD). This is developed to guide the learning facilitators (teachers, parents and responsible adults) in helping the learners meet the standards set by the K to 12 Basic Education Curriculum. The Learning Activity Sheet is self-directed instructional materials aimed to guide the learners in accomplishing activities at their own pace and time using the contextualized resources in the community. This will also assist the learners in acquiring the lifelong learning skills, knowledge and attitudes for productivity and employment. For learning facilitator: The Earth and Life Science 1 Activity Sheet will help you facilitate the teachinglearning activities specified in each Most Essential Learning Competency (MELC) with minimal or no face-to-face encounter between you and learner. This will be made available to the learners with the references/links to ease the independent learning. For the learner: The Earth and Life Science Activity Sheet is developed to help you continue learning even if you are not in school. This learning material provides you with meaningful and engaging activities for independent learning. Being an active learner, carefully read and understand the instructions then perform the activities and answer the assessments. This will be returned to your facilitator on the agreed schedule. iii Name of Learner: ____________________________________________________ Grade and Section: _______________________________Date: _______________ EARTH and LIFE SCIENCE ACTIVITY SHEET No. 2 Unifying Themes in The Study of Life I. Learning Competency with Code • Describe how unifying themes (e.g., structure and function, evolution, and ecosystems) in the study of life show the connections among living things and how they interact with each other and with their environment. (S11/12LT-IIa-3) II. Background Information for Learners • An organism’s structure is related to how it works. An organism consists of many organ systems but functions as one individual. The function of an organism or a part of it depends on its form and structure. Reproduction ensures the survival of species. • III. Living things obtain energy from the food they eat. The ability of an organism to regulate their internal conditions is called homeostasis. Organisms undergo adaptation or evolution in order to survive. Activity Proper Directions: Read the following, analyze the diagram and answer the guide questions. ❖ Ecology is the branch of biology that deals with the study of living organisms and their relationships with each other and their environment. ❖ Biological System consists of related parts that interact with each other to form a whole. It has different parts, but each plays a significant role for the whole to function as one. Without the help from each other, it cannot fully perform its function. ❖ The cells are considered as the basic unit of life. All living organisms are made up of cells. When cells come together, they form the tissues. A group of tissues that perform the same functions form the organs. A group of organs that works together form the different organ systems. An organism consists of many organ systems but functions as one individual. ❖ The function of an organism or a part of an organism greatly depends on its form and structure. It is related to how it works. An example of this is the webbed foot of a duck which helps the duck swim and search for their food under water. Other birds have different structures of feet used for perching and grasping food. 1 ❖ Reproduction ensures the survival of species. All living organisms reproduce either through asexual or sexual reproduction. In asexual reproduction, the offspring inherits the genes from a single parent. On the other hand, in sexual reproduction, the offspring inherit the genes from two individual parents. Some examples of animals that undergo asexual reproduction include earthworms, hydra, planaria, and bacteria. ❖ Living organisms obtain energy from the food they eat. Plants undergo photosynthesis where they convert the energy from the sun into sugar. Since most of the animals cannot produce their own energy, they get the energy from the consumption and assimilation of the biomass of plants and other animals. ❖ The ability of an organism to regulate their internal conditions is called homeostasis. Humans must maintain a body temperature of 37oC. When the temperature outside the bodies becomes hot, the skin cools down by perspiration, maintaining the normal body temperature. ❖ Evolution is the change in the physical and heritable traits of organisms over successive generations. Organisms change over time to adapt to their environment to survive. If they fail to adapt to the changes, they usually become extinct. For example, Philippine is becoming extinct due to widespread deforestation. Another example of adaptation is the Aedes aegypti or the mosquito famous for carrying dengue that caused major outbreaks nationwide. Their eggs were able to survive with scarce or no rainwater which is essential to their life cycle. Evolution takes time, usually decades. However, there are times when change happens very rapidly. One example is the blue moon butterfly that managed to undergo a mutation which allows the males to survive an infection of a parasite. Key Points! ❖ Ecology is the study of living organisms and their relationships with each other and their environment. ❖ An organism’s structure is related to how it works. An organism consists of many organ systems but functions as one individual. ❖ The function of an organism or a part of it depends on its form and structure. ❖ Reproduction ensures the survival of species. ❖ Living things obtain energy from the fo od they eat. ❖ The ability of an organism to regulate their internal conditions is called homeostasis. ❖ Organisms undergo adaptation or evolution in order to survive 2 Activity 1. Look around you and identify the living organisms that surround you. What makes them similar to one another? What makes them different? ______________________________________________________________ _____________________________________________________________________ ❖ Observe what happens to your body when you enter a very dark and cold theater/movie house / cold room. How does your body adapt to the surrounding? __________________________________________________________________ __________________________________________________________________ Activity 2 Guide Questions 1. What does the picture depict about ecology? ______________________________________________________________ ______________________________________________________________ 2. Why is the cell considered as the basic unit of life? ______________________________________________________________ ______________________________________________________________ 3 3. How do you describe the importance of reproduction of species? ______________________________________________________________ ______________________________________________________________ 4. Where did the energy of the plants and animals come from? _____________________________________________________________________ _____________________________________________________________________ 5. What is a biological system? Give example. ______________________________________________________________ ______________________________________________________________ V. Reflection In this time of pandemic, cite how other living organisms like human, plants and animals help ease the problem. _____________________________________________________________________________ _____________________________________________________________________________ IV. Accompanying DepEd Textbook and Educational Sites (With Possible Materials for experiments/activities) Campbell Biology.10th edition. San Francisco, California, USA: Pearson Education Inc.; 2014. Chapter 1: Inquiring about Life. • https://study.com/academy/topic/history-of-life-on-earth-lessonplans.html • The Origin and Early History of Life.http://www.mhhe.com/ biosci/genbio/raven6b/graphics/raven06b/other/ch04.pdf.7 August 2015. • Activity adapted from Mr. WARLITO ZAMORA CANOY 4
