Question : What are the reasons that you can think of for thearthropods to constitute the largest group of the animal kingdom?

Question : What are the reasons that you can think of for thearthropod

1.	Question : What are the reasons that you can think of for thearthropods to constitute the largest group of the animal kingdom?
Answer» Solution :Phylum Arthropoda is the largest group of animal kingdom which constitutes about 83% of all the KNOWN species of animals. Some of the criteria for their success are: (i) variety of habitats occupied, (ii) widespread distribution, (iii) variety of food habits, (iv) capability of defending against ENEMIES, and (v) power to adapt themselves to changing conditions. ETC. Besides, some structural and physiological features which have contributed to their success include : (i) thick CHITINOUS exoskeleton, (ii) jointedness of body and limbs, (iii) locomotion by striated extrinsic muscles, (iv) specialization of digestive, respiratory and NERVOUS systems and (v) behaviour patterns with primitive intelligence andsocial instincts in some members.