Seeds

• What is a monocotyledonous seed?

  Seeds that have an endosperm- food is separate from the embryo

  • example- corn seed
• What is a dicotyledonous seed?

  A seed without an endosperm

  • example- bean seeds
• What is the endosperm in seeds?

  An area where food (starch) is stored. This is found in monocytoledonous seeds and is separated from the embryo.
• What happens during germination?

  Seed absorbs water through a pore in the testa. This triggers metabolic changes in the seed so enzymes are secreted
• What happens during germination (enzymes)?

  Metabolic changes occur.

  • amylase and maltase break down starch to glucose.
  • glucose is turned to sucrose for transport.
  • protease breaks down proteins.
  • lipase breaks down lipids.
• Factor that should be controlled in a seed experiment.

  • plants that are genetically similar
  • REPEAT and calculate mean
  • have a CONTROL for comparison
  • control environmental factors ie temperature, light intensity
  • control soil factors ie pH