Please enable JavaScript.

Coggle requires JavaScript to display documents.

Seed Plants I: Seed Plants without Flowers ("Gymnosperms")…

- - - - carpels
        
        tube-like
        
        closed struture
        
        fruits
  - - - flat sporophylls
        
        pine cones
- - - - bear cones
        
        reproductive activities takes place
      - seed of woody cones is wind- borne
      - can be monoecious and dioecious
      - grows mostly in mountainous topography
      - example
        
        firs, pines, junipers
    - - long shoots
        
        tiny papery leaves
      - short shoots
        
        long needle leaves
      - leaves
        
        perrnnial
        
        1 or 2 veins
        
        needle shaped
      - simple cones
        
        pollen cones
        
        single short
        
        unbranched axis
        
        bears microsporophylls
      - cone bracts
        
        axillary buds
        
        bears megasporophylls
      - ovuliferous scale
        
        fused to bract
      - suspensor
        
        pushes cells
        
        into megagametophyte
      - proembryo
        
        develop in the embryo
  - - - woody trunks
      - stiff foliage
      - sometimes cone like structure
      - evergreen compound leaves
      - trunks are shorter and stouter
      - leaves appear basal rosettes
      - seed cones
        
        pollen cones
  - - - longer tracheids
      - some resembled ferns
        
        other vines
      - any woody plants
        
        fern-like foliage
        
        bore seeds
      - wood was manoxylic
        
        softer/less dense
      - long-lived
        
        vascular cambium
        
        xylem and phloem
  - - - secondary growth
    - - 12 m tall
    - - protostele
    - - integument
        
        layer of tissue
      - micropyle
        
        hole in the integument
      - pollen chamber
        
        holding area
    - - abundant wood
    - - pith surrounded
        
        ring of primary xylem
  - - - dioecious and gymnospermous
    - - stout trunk
        
        wood like conifers
      - large dicot trees
    - - long shoots
  - - - reduced and scale like
    - - broad leaves
  - - - vegetative features
    - - megasporangium
        
        megasporophylls
    - - had stalk
      - thick, fleshy scale
    - - cluster of megasporophylls
        
        curved upward