1. Plant Growth

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1. Plant Growth

  1. 1. Growth SQA HIGHER BIOLOGY Control & Regulation
  2. 2. What is growth?
  3. 3. How do plants grow?
  4. 4. How do we grow?
  5. 5. What about insects?
  6. 6. What part of a plant is this? How is it growing?
  7. 7. What sort of growth is this?
  8. 8. Learning Content <ul><li>Growth differences between plants and animals. </li></ul><ul><ul><li>Position and activity of meristems in plants, absence of meristems in animals. </li></ul></ul><ul><ul><li>Formation of annual rings. </li></ul></ul><ul><ul><li>Regeneration in angiosperms and mammals. </li></ul></ul><ul><ul><li>Growth patterns in plants and animals to include an annual plant, a tree, a human and a locust. </li></ul></ul>
  9. 9. What is growth? <ul><li>How can growth be defined? </li></ul><ul><li>Find a biological definition of growth. </li></ul><ul><ul><li>Why is dry mass used in the definition? </li></ul></ul><ul><li>There are two ways for multicellular organisms to grow, what are they? </li></ul><ul><li>What is a meristem? </li></ul><ul><ul><li>What type of growth occurs at a meristem? </li></ul></ul><ul><ul><li>Where would you find a meristem? </li></ul></ul>
  10. 10. Apical Meristems <ul><li>Use pages 222 & 223 to label your micrographs of apical meristems. </li></ul>
  11. 11. Apical Meristems <ul><li>What are apical meristems? </li></ul><ul><li>What happens there? </li></ul><ul><li>What happens to a newly formed cell? </li></ul><ul><li>Define the following terms: </li></ul><ul><ul><li>Elongated </li></ul></ul><ul><ul><li>Vacuolated </li></ul></ul><ul><ul><li>Differentiated </li></ul></ul>
  12. 12. Lateral Meristems <ul><li>Use Fig 27.3 on p225 to label your diagram of Sambucus stem. </li></ul>
  13. 13. Lateral Meristems <ul><li>What’s the difference between an annual and a perennial plant? </li></ul><ul><li>Why do the stems and roots of perennial plants need to thicken? </li></ul><ul><li>What is cambium? </li></ul><ul><li>What is meant by secondary xylem and phloem? </li></ul><ul><ul><li>What’s primary xylem and phloem? </li></ul></ul><ul><li>What causes annual rings? </li></ul>
  14. 14. Regeneration in Angiosperms <ul><li>What is… </li></ul><ul><ul><li>an angiosperm? </li></ul></ul><ul><ul><li>regeneration? </li></ul></ul><ul><li>How can you regenerate an entire angiosperm plant? </li></ul><ul><li>What are the commercial applications of plant regeneration? </li></ul><ul><li>Produce a flow chart to summarise the steps in plant tissue culture. </li></ul>
  15. 15. Regeneration in Mammals <ul><li>What powers of regeneration do you have? </li></ul>
  16. 16. Growth patterns <ul><li>Use chapter 28 to complete the growth curves and make notes on their shapes. </li></ul>

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