Please enable JavaScript.

Coggle requires JavaScript to display documents.

Reproduction in Organisms - Part 2, Plants, Animals - Coggle Diagram

- - - - Not identical to parents
        
        external morphology, internal structure, physiology
        
        But similar pattern
        
        Juvenile phase - Period of growth
        
        Reproductive phase- flowering
        
        Senescent Phase- Old age
        
        Seasonal & Continuous Breeders
  - - - 1.Gametogenesis
        
        2.Gamete transfer
        
        Gametes - haploid cells
        
        Algae - Isogametes (Fucus), Heterogametes(Cladophora)
        
        majority of SRO - Heterogametes - antherozoid or sperm, egg or ovum
    - - Syngamy- Formation of diploid zygote
        
        Parthenogenesis- rotifers, honeybees and even some lizards & birds (turkey)
        
        External-most aquatic organisms, algae, fishes, amphibians - More gametes(Bony fish & frog)
        
        Internal-many terrestrial organisms fungi, reptiles,birds,mammals, majority of plants (BPAG)
        
        Seed plants - Non-motile male to female by pollen tube
    - - After Zygote formation
        
        1. Zygote
        
        Vital link - continuity of species
        
        Life from single cell - Zygote
        
        Development - depends lifecycle & environment
        
        Fungi and algae - Thick wall
        
        1 more item...
        
        2. Embryogenesis
        
        Cell division & Differentiation
        
        Oviparous-reptiles & birds - fertilized eggs in hard calacreous shell
        
        Viviparous-Young one inside female - Chances of survival higher - why?
        
        Flowering plants
        
        Zygote formed inside ovule
        
        1 more item...