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Flowers, image, A, B = self, C= cross, slide_7, Apis_mellifera_Western…

- - - - All the Pistils together
      - Pistil/Carpel
        
        Stigma
        
        a sticky surface where pollination occurs
        
        Ovary
        
        contains ovule (female gametophyte)
        
        7 cells, 8 nuclei
        
        The ovules contain the egg cells
        
        Style
        
        tube like structure join stigma ---> ovary
  - - - All the Stamens together
      - Stamen
        
        Anther
        
        contains the pollen grain (male gametophyte)
        
        two male nuclei
        
        contains the sperm
        
        Filament
        
        support structure for the anther
- - - - small
      - light
      - much more pollen grains
      - not colourful
      - no scent/nectar
      - long filaments
      - hanging out stigma
    - - attractive
      - good scent
      - colourful
      - nectar --> sugary liquid
      - big
      - found in bunches
  - - - need bigger flowers
      - more nectar
      - strong scent as they are blind and live in the dark
      - the bat carries the pollen on the fur ---> head and neck
    - - A bird sits on the sitting area.
      - The sitting area “bends” or goes down due to the weight and pressure exerted by the bird.
      - The hidden pollen in the flower burst out, like a spray.
      - The pollen sticks/attached to the bird.
      - It’s vivid colors symbolize gay and joy, which gives it’s name and also attracts the pollinator/bird.
- - - - a protective covering
    - - food store, energy-provider
    - - unborn offspring b/w the cotyledons
      - Radicle
        
        root like structure
      - Plumule
        
        shoot like structure
    - - prevents over crowding of plants
      - Brazilian nut tree and amazonian rainforests ---> fruits just fall off the ground
      - acorns from the oak tree ---> collected and stored by squirrels and mice away from the tree
      - Brazil nut fruit ---> a hard coating ---> opened by an agouti (rat family) ---> stores them and go away to explore---> come back and the forgets the storage place---> these seeds are then somehow germinated (with no competition)
      - It's unreliable so, the fruit produces many seeds
      - Goose grass (A, E,NA) and burdock (A, E, NAfr.) have fruits which have hooks on them and easily gets attached and then later brushed off
      - Succulent fruit's flesh is vividly coloured ---> eaten by many mammals
        
        Seeds---> small ---> eaten along the fruit ----> excretion (berry)
        
        Seeds ---> big ---> thrown away after eating the fruit (apricot)
      - Wind dispersed
        
        Dandelion
        
        forms a tuft of air, act like a parachute, slow's down the sinking speed and it blows with the wind
        
        Willow herb
        
        have hairs, increase the air resistance
        
        Sycamore
        
        have a larger mass
        
        found in the maple trees of Europe, SA
        
        increased surface area --> catches the wind easily
        ---> fuit falls ---> travels on air currents
      - Lupin and gorse (E, NA) ---> grow pods ---> they dry and twist --->the fruits twists --> tension rises ---> pods split open --> seeds are exploded
  - - - Egg cell + 1st male nuclei
        
        Zygote ---> the actual plant
    - - Central cell (polar nuclei) + 2nd male nuclei
        
        Endosperm ---> the nutrition provider for the zygote ---> later cotyledon
      - 3 nuclei fusing
    - - Fertilization + Triple fusion