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Plant Reproduction (Seed structure (zygote grows to become an embryo,…

- - - - wind blows pollen to carpel
      - insect
        
        sticks to insect and when it flies to next flower it deposits pollen
- - - - are often light and small
        
        orchid seed
      - some larger with special devices
        
        dandelion = parachute
        
        sycamore + ash = wings
    - - animals disperse seeds in two ways
        
        they swallow seeds and get passed out later
        
        strawberries, blackberries and tomatoes
        
        fruits or seeds stick to animal
        
        burdock, cleavers and goosegrass
    - - fruit pod bursts open dispersing the seeds - peas, beans, lupins and gorse plants
    - - some seeds float allowing streams or rivers to carry them - coconuts, water lilies and alder
- - - - protect flower as a bud
    - - protect internal parts of flower, brightly coloured to attract insects
    - - female part of flower, produces eggs, nucleus of egg = gamete, some flowers more carpels
      - structures of carpel
        
        stigma
        
        place where pollen grains will land
        
        Style
        
        style connects stigma to ovary, sometimes small
        
        Ovary
        
        contains one or more ovule, each ovule produces egg, nucleus of egg = gamete
    - - male part of flower, produces pollen, nucleus of pollen male gamete, most flowers large numbers of stamens
      - structures of stamen
        
        filament
        
        stalk that supports anther, ensures anther is high to make sure pollen leaves plant
        
        anther
        
        makes pollen grains, pollen nucleus = gamete