Which among the following is the largest phylum of Animalia?

Correct option is D

The correct answer is (d) Arthropoda
Explanation:
· Phylum Arthropoda is the largest phylum in the Animal Kingdom, accounting for over 80% of all known animal species.
· It includes insects, crustaceans, arachnids, centipedes, and millipedes.
· Arthropods are bilaterally symmetrical, have jointed appendages, segmented bodies, and chitinous exoskeletons.
Information Booster:
· Examples: Ants, butterflies, crabs, spiders, prawns.
· Arthropods are found in virtually every habitat — terrestrial, aquatic, and aerial.
Additional Knowledge:

Platyhelminthes (Option a) . Also called flatworms (e.g., Planaria, Tapeworm). . Much smaller group with simple body structure.
Ctenophora (Option b) . Known as comb jellies. . Marine animals, very small in number.
Mollusca (Option c) . Second-largest phylum (e.g., snails, octopus, clams). . Diverse but still smaller than Arthropoda.