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Reproduction - Coggle Diagram

- - - - eg. Bacteria, fungi
    - - By roots → eg. Sweet potato
      - By stems → eg. Ginger, potato
      - By leaves → eg. Bryophyllum
    - - Cutting → eg. Rose
      - Layering → eg. Strawberry, lemon
      - Grafting → eg. Mango, rose.
      - Micropropagation → eg. Orchids, dahlia
  - - - Calyx
        
        Calyx and corolla are accessory parts.
      - Corolla
      - Androecium
        
        Androecium - Male reproductive organ producing pollen grains.
      - Gynoecuim
        
        Gynoecium - Female reproductive organ having ovule (egg).
    - - Pollination – Transfer of pollens from anther to stigma for fertilization.
      - Fertilization – Fusion of male and female gametes.
      - Double fertilization (Triple fusion and syngamy) – unique events in the embryo sac of ovules.
- - - - (a) Binary fission → eg. Amoeba
      - (b) Multiple fission → eg. Plasmodium
  - - - (a) Primary sex organs: Testes (males) and ovaries (females)
      - (b) Secondary sex organs: Genital ducts and glands (males) and fallopian tubes, uterus, vagina (females)
    - - Male sex hormone is testosterone and female sex hormones are progesterone and estrogen.
    - - Puberty is attained at the age of 13 – 14 years in males and 10 – 12 years in females.
    - - The zygote formed after fertilization develops into embryo which gets implanted in uterus.
      - Placenta (a disc-like special tissue) develops between uterine wall and embryo for nourishment of the embryo.
      - Gestation period in humans is 280 days.