Please enable JavaScript.

Coggle requires JavaScript to display documents.

Flowers and Reproduction (Sexual (Embryo/Seed Development (torpedo stage…

- - - - sperm :male_sign:
      - eggs :female_sign:
      - together form a zygote
      - syngamy/fertilization
      - mitosis leads to gametophyte
    - - always diploid
    - - microgametes
        
        sperm that swim
      - megagametes
        
        eggs
      - microgametophytes
        
        grew from microspore
      - megagametophytes
        
        grew from megaspore
    - - sporophyte
      - gametophyte
      - alteration of generations
  - - - have all 4 parts
    - - lack 1 or 2 parts
    - - sepal
      - petals
      - stamens :male_sign:
        
        filament
        
        anther
      - carpels :female_sign:
        
        stigma
        
        style
        
        ovary
  - - - small/simple
      - mitotic division
        
        large vegetative cell
        
        small generative cell
      - pollen lands on stigma
        
        germinates to form a pollen tube
    - - multiple nuclei
        
        embryo sac
        
        central cell
        
        2 polar nuclei
        
        3 antipodal cells
        
        egg apparatus
        
        consist of 2 synergids
        
        egg
  - - - plasmogamy
      - karyogamy
    - - second sperm nucleus released
      - goes to synergid in the central cell
      - undergoes karyogamy with both polar nuclei
        
        forms large endosperm nucleus
      - process called double fertilization
  - - - embryo
      - suspensor
    - - basal angiosperms
      - eudicots
    - - elongate cylinder
      - radicle
      - epicotyl
      - hypocotyl
    - - albuminous seed
    - - seeds is exalbuminous
  - - - exocarp
        
        outer layer
      - mesocarp
        
        middle layer
      - endocarp
        
        innermost layer
- - - - carpel pollinated by pollen by same plant
  - - - produce spores
    - - imperfect flowers
    - - perfect flower
    - - sepals and petals
    - - individuals produce only staminate flowers or carpellate flowers
    - - staminate and carpellate flowers on same plant
  - - - symmetrical-actinomorphic/regular
      - bilaterally symmetric-zygomorphic
- - - - visual signal to pollinators
- - - - dehiscent fruits
      - indehiscent fruits