1. Tardigrade
  2. Question
  3. Biology
  4. Arthropods have (1) bilateral symmetry and segmented body plan (2) organ system of grade of body organization (3) jointed legs and division of labour (4) pseudocoelom and metamerism

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Q. Arthropods have
(1) bilateral symmetry and segmented body plan
(2) organ system of grade of body organization
(3) jointed legs and division of labour
(4) pseudocoelom and metamerism

BHUBHU 2009

Solution:

Arthropods are the animals with bilateral symmetry, three germ layers in the body wall (triploblastic), metamerically segmented body plan and segments are jointed externally only. Organ system grade of body organization and division of labour is also found. Appendages are jointed and variously adapted for walking, swimming, feeding, sensory reception and defence. Body cavity of arthropods is a fluid filled haemocoel.