MODULE 1_The Evolving COncept of Life Based on Emerging Pieces of Evidence.pptx

It contains the topic for Module 1 :The Evolving COncept of Life Based on Emerging Pieces of Evidence for Earth and Life Science Quarter 2.

1. EARTH AND LIFE SCIENCE 2 ND QUARTER

2. The Evolving Concept of Life based on Emerging Pieces of Evidence Lesson 1 Explain the evolving concept of life based on emerging pieces of evidence.

3. Collection of disciplines that is made up of theories and principles that tackles the structure and function of living things starting from molecular level up to entire ecosystem. Life Science

4. Branches of Life Science ( Biology)

5. Zoology is the study of animals with regards to their physiology, classification, growth and development, and behavior.

6. Botany is the study of plants. Traditionally, botany also included the study of fungi and algae.

7. Microbiology is the study of minute microscopic organisms dealing with their interactions with one another and other living organisms.

8. ECOLOGY is the study of the interactions of living organisms with each other and with the nonliving things in their environment.

9. Genetics is the study of heredity and genetic materials like genes and genetic variation in living organisms.

10. Characteristic of Life They are living if …….

11. 1. Made up of CELLS All living things are composed of one or more cells. Animals, plants, funji , and many unicellular organisms Bacteria

12. All organisms grow and develop following specific instructions coded for by their genes. 2. Able to GROW AND DEVELOP

13. a fundamental feature of all known life; each individual organism exists as the result of reproduction. 3. Able to REPRODUCE

14. A set of  life -sustaining  chemical reactions  in  organisms . conversion of the energy in food to  energy  available to run cellular processes the conversion of food to building blocks for  proteins ,  lipids ,  nucleic acids , and some  carbohydrates ; elimination of  metabolic wastes (ammonia, urea, uric acid, and creatinine ) . 4.METABOLISM

15. Response to changes in light, heat, sound, and chemical and mechanical contact. To detect stimuli, organisms have means for receiving information, such as eyes, ears, and taste buds. 5. Respond to Stimuli or Environment

16. Tendency of an organism or cell to  maintain a constant internal environment . Living things constantly adjust to internal and external changes. 6. They maintain Homeostasis

17. Have you been curious of when and where did life start on Earth?

18. Title: Origin and Evolution of Life Original Art by Robert Bausch

19. Have you been curious of when and where did life start on Earth? During the 1800s geologists and naturalists found several forms of physical evidence that confirmed that Earth is very old.

20. Pieces of Evidence of Evolution of Life

21. 1. FOSSILS of ancient sea life on dry land far from oceans supported the idea that the Earth changed over time and some dry land today was once covered by oceans Trilobite Fossil

22. 1. FOSSILS Trilobite Fossil - exclusively marine animals, first appeared at the beginning of the Cambrian Period, about 542 million years ago,

23. allowed the people to realize that rock layers represent the order in which rocks and fossils appeared, thus they were able to trace the history of Earth and life on Earth ; 2. Many layers of rock- sedimentary rock

24. 2. Many layers of rock- sedimentary rock

25. 3. I ndications that volcanic eruptions, earthquakes and erosion that happened long ago shaped much of the Earth’s surface and supported the idea of an older Earth.

26. O rder of the appearance of life forms on earth

27. 1. ZIRCON CRYSTALS 4.6- 3.8 BYA E arly earth is said to be violent because of the meteorites and volcanic eruptions. With this condition, zircon crystal was formed. Used by the geologist to determine the age of rocks

28. 2. STROMATOLITES 3.5 BYA • Life on Earth initially began with prokaryotes , discovered in sedimentary rock formations called stromatolites. Aggregate of blue green algae ( these are the reason why Earth is habitable )

29. 3.CYANOBACTERIA 3.0 BYA First photosynthetic organism thrived the earth which is blue green algae called cyanobacteria.

30. 4. 1 st EUKARYOTES 2.0 BYA Appearance of the first eukaryotes and the influx of multicellular organisms occurred 1.2 billion years ago.

31. 5. TRILOBITES AND CEPHALOPODS 500 MYA The Paleozoic era when the trilobites and cephalopods became dominant in the ocean particularly during the Cambrian and Ordovician

32. 6. REPTILES 251- 65.5 MYA The Mesozoic era - the age of reptiles that has a span of 251 to 65.5 MYA divided into Triassic, Jurassic and Cretaceous Period .

33. 7 . HOMO ERECTUS 250 TYA The Cenozoic era - recent life and based on paleontological evidence. Homo erectus have evolved . Homo erectus is the first human relative to have a body proportion First race to migrate out of Africa First race to cook food

34. Arrange the pictures

35. Arrange the pictures

36. LESSON 1

37. 1. The Earth is about 4.6 billion years old. Life on our planet began only between 3.5 and 4.0 billion years ago.

38. 2. Evidence from fossil records show the emergence of the different life forms.

39. 3. The common ancestor of all life was prokaryotic.

40. 4. The oldest cell microfossils are filaments from 3.5 billion-year- old rocks – Stromatolites

41. 5. Eukaryotic cells evolved form prokaryotic cells

42. 6. The evolution of life is brought about the changes in the environment which are linked to changes in climate and geology.

43. 7. These environmental changes made the Earth’s environment more suitable for a wider variety of life forms.

44. 1. Why do some species evolve while others go extinct?