Summary: Moleculaire Genetica Van Planten En Microben

Read the summary and the most important questions on Moleculaire Genetica van Planten en Microben

• 1 Week 1

• 1.1 Salma L1

  This is a preview. There are 31 more flashcards available for chapter 1.1
  Show more cards here

• What are possible approaches for food security

  Improved irrigatoin systems
  Management of soil nutrients and erosion
  Development of crops that are more tolerant to drought

• What is a side effect of drought tolerance

  Slower growth and development

• What are the three strategies for drought adaptation

  Escape
  Avoidance
  Tolerance

• How does a plant escape from drought

  It changes the timing of their growth and reproduction > short life cycle and early flowering before the next dry season

• In what different ways do plants avoid drought

  Root system modifications
  Stomatal closure
  leaf modifications
  morphological changes

• How does stomatal closure avoid water loss

  Smaller stomata reduce water loss
  reduced stomatal density, fewer stomata or only stomata on the underside to minimize water loss

• What leaf modifications can a plant do to avoid water loss

  Leaf size reduction > smaller leaves have less surface area
  Leaf abscission, dropping leaves during drought
  Thick, waxy cuticles help prevent water loss
  Leaf rolling or wilting reduces the surface area of the leaf and the exposure to sunlight, thereby decreasing water loss

• What morphological changes can a plant make to avoid water loss?

  Succulence
  pubescence

• What 2 root systems are there

  Taproot, often dicotyledonous: characterized by the presence of primary root
  Fibrous, often monosotyldonous: branching roots

• What root adaptations can a plant make to avoid water loss

  Deeper root systems
  Increased root biomass
  Root hair proliferation and elongation