1 / 38

Unit 2

Unit 2. Environmental Biology and Genetics. Energy Flow in Ecosystems. Energy Flow in Ecosystems. Learning objectives: By the end of the lesson you should be able to: Explain the meaning of the words Ecosystem Habitat Population Community Niche. Energy Flow in Ecosystems.

dewey
Download Presentation

Unit 2

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Unit 2 Environmental Biology and Genetics

  2. Energy Flow in Ecosystems

  3. Energy Flow in Ecosystems • Learning objectives: • By the end of the lesson you should be able to: • Explain the meaning of the words • Ecosystem • Habitat • Population • Community • Niche

  4. Energy Flow in Ecosystems • Learning objectives: • By the end of the lesson you should be able to: • Explain how food chains and food web are constructed in terms of producers and consumers.

  5. Energy Flow in Ecosystems • Learning objectives: • By the end of the lesson you should be able to: • Describe the flow of energy in an ecosystem • Explain how energy can be lost from an ecosystem

  6. Energy Flow in Ecosystems • Learning objectives: • By the end of the lesson you should be able to: • Describe predator and prey relationships • State the meanings of the words herbivore, carnivore and omnivore

  7. Factors Affecting The Variety of Species in an Ecosystem

  8. Factors affecting the variety of Species in an Ecosystem • Learning objectives: • By the end of the lesson you should be able to: • State the meaning of the word Biodiversity • State the meaning of the word Species • Explain what makes an ecosystem stable

  9. Factors affecting the variety of Species in an Ecosystem • Learning objectives: • By the end of the lesson you should be able to: • Explain how animals and plants have adapted to their environment giving named examples of species and their adaptation.

  10. Factors affecting the variety of Species in an Ecosystem • Learning objectives: • By the end of the lesson you should be able to: • Describe the effect of very high, high and low intensity grazing on species diversity.

  11. Factors affecting the variety of Species in an Ecosystem • Learning objectives: • By the end of the lesson you should be able to: • Describe the effects of human activity on species diversity. • Explain the effects of pollution on species diversity. • Explain the effects of habitat destruction on species diversity.

  12. Factors affecting the variety of Species in an Ecosystem • Learning objectives: • By the end of the lesson you should be able to: • Describe behavioural adaptations in animals using woodlice as an example.

  13. Factors affecting the variety of Species in an Ecosystem • Learning objectives: • By the end of the lesson you should be able to: • Describe competition in plants explaining which resources plants compete for. • Describe competition in animals explaining which resources animal compete for.

  14. Factors affecting the variety of Species in an Ecosystem • Learning objectives: • By the end of the lesson you should be able to: • Explain the meaning of continuous and discontinuous variation. • Give examples of continuous and discontinuous variation using both plants and animals

  15. Genetics

  16. Genetics • Learning objectives: • By the end of the lesson you should be able to: • State the name of the structure which carries genetic information. • Describe what chromosomes are made of.

  17. Genetics • Learning objectives: • By the end of the lesson you should be able to: • Explain what DNA codes for. • Describe the relationship between protein function and organisms characteristics.

  18. Genetics • Learning objectives: • By the end of the lesson you should be able to: • State the name of male and female gamete in animals • State where male and female gametes are made in animals.

  19. Genetics • Learning objectives: • By the end of the lesson you should be able to: • State the name of the male and female gametes in plants. • Describe where male and female gametes are formed in plants.

  20. Genetics • Learning objectives: • By the end of the lesson you should be able to: • Describe how a zygote is formed. • Explain how variation in gametes is ensured.

  21. Genetics • Learning objectives: • By the end of the lesson you should be able to: • Describe the stages of Meiosis: in which a single sex cell divides to produce four gamete cells

  22. Genetics • Learning objectives: • By the end of the lesson you should be able to: • State the number of chromosomes present in adult humans. • State the number of chromosomes present in human gametes

  23. Genetics • Learning objectives: • By the end of the lesson you should be able to: • Explain how the gender of a human is determined in terms of chromosomes

  24. Genetics • Learning objectives: • By the end of the lesson you should be able to: • State what a gene is • State what an allele is and how many are found in a gene.

  25. Genetics • Learning objectives: • By the end of the lesson you should be able to: • State the meaning of the terms • Homozygous • Heterozygous • Dominant • Recessive

  26. Genetics • Learning objectives: • By the end of the lesson you should be able to: • State the meaning of the terms • Genotype • Phenotype • Describe the relationship between an organisms genotype and phenotype.

  27. Genetics • Learning objectives: • By the end of the lesson you should be able to: • State the meaning of the terms • True breeding • P • F1 • F2

  28. Genetics • Learning objectives: • By the end of the lesson you should be able to: • Solve problems in relation to monohybrid crosses from the P generation to the F2 generation using dominant and recessive alleles.

  29. Genetics • Learning objectives: • By the end of the lesson you should be able to: • To predict ratios of offspring genotype in monohybrid crosses. • State the reasons for differences between observed and predicted figures in monohybrid crosses.

  30. Genetics • Learning objectives: • By the end of the lesson you should be able to: • State what is meant by the term co-dominance. • Solve problems related to crosses involving co-dominant alleles.

  31. Genetics • Learning objectives: • By the end of the lesson you should be able to: • Describe polygenic inheritance

  32. Genetics • Learning objectives: • By the end of the lesson you should be able to: • Explain the impact of the environment on the phenotype of an organism. • Describe how identical twins or clones can be used to assess the impact of the environment on a organisms phenotype. • State whether environmental impact on phenotype can be passed on to the next generation.

  33. Evolution and Genetic Engineering

  34. Evolution and Genetic Engineering • Learning objectives: • By the end of the lesson you should be able to: • Define the term Natural Selection.

  35. Evolution and Genetic Engineering • Learning objectives: • By the end of the lesson you should be able to: • Describe the process of Natural Selection in the Peppered Moth.

  36. Evolution and Genetic Engineering • Learning objectives: • By the end of the lesson you should be able to: • Explain the process of selective breeding. • Describe the advantages and disadvantages of selective breeding.

  37. Evolution and Genetic Engineering • Learning objectives: • By the end of the lesson you should be able to: • Describe the process of genetic engineering from the identification of a desired gene to the synthesis of the desired product.

  38. Evolution and Genetic Engineering • Learning objectives: • By the end of the lesson you should be able to: • State some of the medicinal products produced by genetic engineering. • Describe the advantages and disadvantages of genetic engineering.

More Related