IGCSE Phylum Arthropods and Plants

IGCSE Phylum Arthropods and Plants的思维导图，内容有Phylum Arthropods、Plants，快来看。

Biology

• Phylum Arthropods
  • What is Phylum Arthropods?
    • 1.Animals with jointed legs
    • 2. No backbone.
  • What are charateristics of phylum arthropods?
    • 1.Several pairs of jonited legs
    • 2. Exoskeleton
  • Classify of phylum Arthropods
    • Insects
      • 1.Arthropods with three pairs of jointed legs
      • 2.Two paris of wings
      • 3.Breathe through tracheae
      • 4.Body divided into head, thorax and abdomen.
    • Crustaceans
      • 1. Arthropods with more than four pairs of jointed legs
      • 2. Not millipedes or centipedes
      • 3. Breathe through gills.
    • Arachnids
      • 1. Arthropods with four pairs of jointed legs
      • 2. Breathe through gills called book lungs.
    • Myriapods
      • 1. Body consisits of many segments
      • 2. Each segment has jointed legs
• Plants
  • Ferns
    • 1. Plants wiht roots steams and leaves
    • 2. Have leaves called fronds
    • 3. Do not produce flowers
    • 4. Reproduce by spores
  • Flowering plants
    • Characteristics:
      • 1. Plants with roots, steams and leaves
      • 2. Reproduce sexually by means of flowers and seeds
      • 3. Seeds are produced inside the ovary, in the flower
    • Classifying
      • 1. Monocolytedonous plants
        • Paralled veins
        • Strap-shaped leaves
      • 2.Dicotyledonous plants
        • Broad leaves
        • Network of branching veins