LEARNING ACTIVITY SHEET, Lecture notes of Biology

Download LEARNING ACTIVITY SHEET and more Lecture notes Biology in PDF only on Docsity! Republic of pines: aDepartment of Goucation REGION V - BICOL SCHOOLS DIVISION OFFICE OF TABACO CITY SAN ANTONIO NATIONAL HIGH SCHOOL LEARNING ACTIVITY SHEET in SCIENCE 10 3 Quarter, Week 7 Name of Student: Grade Level: 10 Date: THEORIES OF EVOLUTION I. Introductory Concept: Homo sapiens (Cro-Magnon) to Cro-magnon. Evolution is the process of change. This change started from the simple origin of life and led to the wide variety of microorganisms plants, and animals around today. Now, perform the following activities to help you understand the occurrence of evolution. Il. Learning Skills from the MELCs: *explain the occurrence of evolution Ill. Activities: ACTIVITY 1 FOLLOW THE TRACK Objective: Explain the Theory of Natural Selection Materials: pen and paper Procedure: 1. Observe the set of footprints in the diagram. Na HRs ee is wt i ana wht we . ~~ e \ fy " Diagram 1 Diagram 2 Diagram 3 Diagram 4 2. Try to tell a story about the different events. Predict what can probably happen at the end of the diagram. 4. In Diagram 1, how many sets of footprints are there? Based on the size of footprints, describe the organisms. w 5. In what directions are the footprints going? 6. Describe or predict what is happening in Diagram 3. In Diagram 4 ANALYSIS 1 Create your own story using the four diagrams and share it to the class. Write your story in paragraph form. , .y Remember this! “Ox Organisms struggle for existence in order to survive they compete for food and ¥ “space. Organisms with favorable and advantageous characteristics survive and reproduce. Fitness refers to the ability of an organism to survive and produce off springs. Different individuals in a population possess different characteristics and abilities. This is called variation. Variation among individuals in the population would likely bring greater chance of survival. An organism that is adapted and has structures fitted to survive ina given environment would likely produce offspring. ACTIVITY 2 Survivor Objectives: Determine the effect of environmental changes on adaptation and survival of a species. Materials: tray, surgical mask, alcohol lamp, magnet, rags or mittens, glass of tap water, marbles, paper clips, paper square, candles, plastic cellophane Procedure: 1. Place inside the tray 6 pieces each of marbles, paper clips, square paper, plastic cellophane and candles. Spread them thoroughly on the tray. 2. Hold the tray with a mitten and run it over an alcohol lamp for one minute. Be careful while working with an alcohol lamp. 3. Remove the burnt materials and record the survivors or those that get burned. 4. For every one survivor, add two offsprings (example for one marble, add two more marbles) 5. Run along the magnet on the tray. 6. Count the numbers of survivors. Repeat procedure 4 7. Using a glass of water , sprinkle water inside the tray. 8. Remove the wet and destroyed organisms on the tray. 9. Count and record the number of survivors and repeat procedures 4 Disturbances Materials/Organisms | Fire (alcohol Earthquake Flood /typhoon | Total number lamp) (magnet) water of survivors Marbles Paper Candles Plastics Paper clips ANALYSIS 2 1. Which of the organisms has the most number of survivors? 2. Are there organisms that decrease in number or did not survive the three environmental disturbances? 3. Compare and contrast the characteristics of organisms that survive and did not survive the three environmental disturbances. 4. How can changes and disturbances in the environment affect the survival of the species? vl ~ “Remember this! Variation increases the chance of survival of living things. Organisms with the best and deSrable traits would likely adapt to environmental changes and may gradually become better suited to survive in a given environment. Organisms which are best adapted to the environment will continue to reproduce and perpetuate their own kind. Mating between surviving populations of the same