Give the important distinguishing features of Arthropoda

cbse
cbse-class-9-science
diversity-in
living-organisms

#1

Give the important distinguishing features of Arthropoda.

Answer:

  • These animals are bilaterally symmetrical and segmented.
  • Body is covered with chitinous exoskeleton.
  • One or two pairs of jointed legs are present.
  • The body cavity is blood-filled and is called haemocoel.
  • Body bears jointed appendages, and is divided into head, thorax and abdomen.
  • Circulatory system is open, i.e., blood doesn’t flow in blood vessels.
    Examples: Palaemon, cockroach and butterfly.