Please enable JavaScript.

Coggle requires JavaScript to display documents.

Reproduction in plants (Germination (Seed contains a plant embryo,…

- - - - Enclosed within flower
        => insect must make contact
      - exposed
        => wind can easily blow pollen away
    - - enclosed within flower
        => insect must make contact
      - Exposed
        => catch pollen blowing in the wind
    - - Sticky
        => pollen grains attach from insects
      - Feathery
        => catch pollen blowing in the wind
    - - Large
        => attract insects
      - Small
    - - Brightly coloured
        => attract insects
      - Not brightly coloured, usually green
    - - Present
        => produce nectar as a reward for insects
      - Absent
    - - larger, sticky grains / grains with hooks
        => stick to insects' bodies
      - Smaller, smooth, inflated grains
        => carry in the wind
- - - - Tube A: wet cotton wool, 20°C
      - Tube B: seeds on dry cotton wool, 20°C
        => absence of water
      - Tube C: boiled water with a thin surface layer of oil, 20°C
        => absence of oxygen
      - Tube D: wet cotton wool, in a fridge at 4°C
        => absence of heat
    - - Tube A will germinate
      - Tubes B and C will not germinate
      - Tube D may germinate, but very slowly