Four characters (a-d) are given below. Which two are CORRECT about phylum arthropoda? (i) It is the largest phylum of animal kingdom. (ii) One third of all named species on earth are arthropods. (iii) They are bilaterally symmetrical, triploblastic and segmented animals. (iv) The body is covered by calcareous exoskeleton.

Question

Four characters (a-d) are given below. Which two are CORRECT about phylum arthropoda? (i) It is the largest phylum of animal kingdom. (ii) One third of all named species on earth are arthropods. (iii) They are bilaterally symmetrical, triploblastic and segmented animals. (iv) The body is covered by calcareous exoskeleton. (A) (i) and (ii) (B) (i) and (iii) (C) (i) and (iv) (D) (i), (ii) and (iii)

Tardigrade Admin · Accepted Answer

Phylum Arthropoda is the largest phylum of animal kingdom. These include two third of all the animals on the earth. Majority of animals in this phylum are insects. 'Arthros' means joins and 'poda' means feet and hence these animals have jointed appendages. The body is divided into head, thorax and abdomen. These animals have proper organ systems, triploblastic body and are Eucoelomates. Their body is covered by exoskeleton made up of chitin.