systems in plants

• plants defining features
• what are the 2 obvious defining features of a plant?

  the green colour and the inability to move from place to place
• why don't plants need to move in search of food?

  they photosynthesise their own food
• plants have the same basic needs of animals. these are:

  • exchanging gases with the surroundings
  • internal transportation to move water and nutrients
  • way of reproduction
• hierarchy system in the plant
• what does the dermal tissue system form?

  the outer surfaces of the plant
• what does the vascular tissue system do?

  transport food, water and minerals throughout the plant
• root system
• what part of the plant is the root system

  typically the one underground
• what does the root system do?

  anchor the plant, absorb water and minerals from the soil and stores food
• shoot system
• what two functions is the shoot system specialised in?

  photosynthesis and flower production for reproduction
• light energy + CO2 + water --chlorophyll--> glucose + oxygen
• what is glucose used for?

  plant growth, cellular respiration, energy storage
• Chloroplasts contain flat disk-like structures called thylakoids. Thylakoids are arranged in stacks called grana. These stacks act like solar collectors using chlorophyll in the membrane of thylakoids.
• Flowers contain male or female reproductive structures or sometimes both male reproductive structures produce pollen grains, females produce eggs and are fertilized by pollen. After pollination, the female flower parts form seeds. In most flowering plants the seeds are contained within a specialized structure called fruit.
• Coniferous trees are not flowering plants, they have different sexual reproductive systems Conifers are all wind pollinated, and instead of having flowers, produce pollen and seeds and specialise cones. 
• the functions of the stem system

  supports branches, leaves and flowers, provides a way to transport materials
• why do stem systems contain significant amounts of vascular tissue>

  to transport substances all over the plant