The correct option for the largest phylum of animal is iv) Arthropod Phylum
Arthropoda is the largest phylum of all living organisms and having members with a particular exoskeleton and segmented bodies. Arthropoda is the largest phylum with about nine lakh species.
Characteristics of Arthropoda
A few Arthropoda characteristics are discussed below:
The body is triploblastic, segmented, and bilaterally symmetrical.
They exhibit the organ system level of organization.
The body is divided into the head, thorax, and abdomen.
Their body has jointed appendages that help in locomotion.
The coelomic cavity is filled with blood.
They have an open circulatory system.
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