Phylum - Arthropoda

Explanation

(i) These animals have jointed appendages. Hence, they are called as Arthropods.
(ii) The planet Earth has highest number of animals from this phylum. Hence, these are the largest successful animals in the kingdom animalia.
(iii) These animals are found in all types of habitat ranging from deepest oceans to highest mountains.
(iv) Body of these animals is triploblastic,eucoelomate, bilaterally symmetrical and segmented.
(v) Chitinous exoskeleton is present around their body.
(vi) These animals are unisexual. e.g. Crab, spider, scorpion, millipede, cockroach, centipede, butterfly, honey bee, etc.