1. Tardigrade
  2. Question
  3. Biology
  4. Respiratory organs like gills, book gills, book lungs or tracheal system are found in phylum

Q. Respiratory organs like gills, book gills, book lungs or tracheal system are found in phylum

 1809  227 NTA AbhyasNTA Abhyas 2020Animal Kingdom Report Error

Solution:

They have an organ-system level of organization. They are bilaterally symmetrical, triploblastic, segmented and coelomate animals. The body of arthropods is covered by a chitinous exoskeleton. The body consists of a head, thorax and abdomen. They have jointed appendages (arthros-joint, poda-appendages). Respiratory organs are gills, book gills, book lungs or tracheal system. The circulatory system is of open type. Sensory organs like antennae, eyes (compound and simple), statocysts or balancing organs are present. Excretion takes place through malpighian tubules.