BIODIVERSITY AND EVOLUTION science topic.pptx

a presentation about biodiversity and evolution

1. BIODIVERSITY AND EVOLUTION PRESENTED BY: BEVERLY B. SIBAYAN

2. BIODIVERSITY Biodiversity is all the different kinds of life you'll find in one area—the variety of animals, plants, fungi, and even microorganisms like bacteria that make up our natural world. Each of these species and organisms work together in ecosystems, like an intricate web, to maintain balance and support life.

3. WHAT DO YOU SEE IN THE PICTURE?

4. EVOLUTION The developmental process by which all organisms develop from earlier forms of life. Random genetic mutations are changes in the genetic code that occur naturally during cell division and reproduction. These mutations can be harmful, neutral, or beneficial to an organism. Natural selection is the process by which organisms with traits that are better suited to their environment are more likely to survive and reproduce than those without those traits. Over time, the beneficial traits become more common in a population, while the harmful traits become less common or disappear altogether. Through these mechanisms, evolution has led to the development of a vast array of species, each with its unique set of adaptations and traits that allow them to survive and thrive in their respective environments. The process of evolution is ongoing, and new species continue to emerge while others become extinct.

5. Before we proceed watch muna tayo ng isang youtube video from other teacher explaining the Evidence of Evolution, para pag di nio nagets sa akin ehh my magets kayo sa explanation niya 😅

6. Youtube Video on Evidence of Evolution

7. EVIDENCE OF EVOLUTION

8. EMBRYOLOLOGY Refers to the scientific study of embryos and their development. Many scientists believed and observed that during early development, the embryo of many vertebrates such as fish, birds, mammals, and reptiles are almost impossible to understand. These vertebrate animals have similarities based on the result of shared common ancestry. As they improved gradually, the vertebrate animals develop a unique characteristic that differentiates them from other animal species. The development of the characteristics shows the evidence for the macroevolution ancestry of each animal.

9. MACROEVOLUTION The term macroevolution can also be used to explain the shared common ancestry between all living organisms, a concept known as  Universal Common Descent . Universal common ancestry (UCA) is a central pillar of modern evolutionary theory. As first suggested by Darwin, the theory of UCA posits that all extant terrestrial organisms share a common genetic heritage, each being the genealogical descendant of a single species from the distant past

10. EMBRYOLOGY

11. HOMOLOGOUS STRUCTURE Refers to the physical structures of the organisms that have the same evolutionary origin and positions. For instance, the appendages vertebrate animals have the same evolutionary origin. As the progress, the animals developed differently in response to the function of their appendages. The legs of amphibian are adapted for walking and crawling and the wings of avian are adapted to fly.

12. HOMOLOGOUS STRUCTURE

13. VESTIGIAL STRUCTURE It refers to the structure of animals which is gradually disappearing. One of the structure of an animal usually gets smaller compared to other animal species in earlier evolutionary lineage. A structure of an organism with few or no function but it is clearly homologous to the structure of another organism is called vestigial structure.

14. Vestigial Structure

15. GENETICS Genetic evidence is another evidence of evolution in which organisms have the basic heredity units for all life which consists of similar nucleotides and proteins.

16. GENETICS

17. FOSSILS Fossils are the remains of plants and animals. The oldest discovered fossils were more than 3 billion years old, which may be from microfossils of permineralized microorganism located in Western Australia. Fossils were formed when living organisms are quickly buried in sand, mud, and gravel at the bottom part of the different bodies of water. Due to periodic time, particles piled up and eventually became sedimentary rocks producing the original pattern of living organism. To determine the age of fossilized organism, they used the radioisotope dating like the radioactive components of potassium-argon. Fossils can be found through the help of paleontologists. Fossil records are evidence of many life organisms that inhabited the Earth in the past.

18. FOSSILS

19. Maraming salamat po 😊