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  4. The second-largest phylum of invertebrate animals is:

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Q. The second-largest phylum of invertebrate animals is:

NTA AbhyasNTA Abhyas 2020Animal Kingdom

Solution:

Mollusca is the second largest phylum of the animal kingdom because of its huge class - Gastropoda (univalvia).
Phylum Arthropoda is the largest phylum.
Mollusc means soft-bodied animals.
Habitat: Aquatic (marine or freshwater) or terrestrial.
Symmetry: Bilaterally symmetrical.
Level of organization: Organ system level.
They are triploblastic and eucoelomate.