Which phylum does the class Insecta belong to?

Insecta, commonly referred to as insects, belongs to the phylum Arthropoda. This classification is based on a number of defining characteristics that insects share with other arthropods, such as a segmented body, an exoskeleton made of chitin, and jointed appendages. The phylum Arthropoda is the largest and most diverse group in the animal kingdom, encompassing not only insects but also arachnids (like spiders), crustaceans (like crabs), and myriapods (like centipedes and millipedes).

Understanding this classification is significant in the study of biology and ecology, as it highlights the evolutionary relationships between different groups of organisms, their anatomical features, and ecological roles. Insects, as members of Arthropoda, exhibit remarkable adaptation and diversification, which is crucial for various ecological processes such as pollination, decomposition, and serving as a food source for other animals.

The other choices represent different phyla that do not include insects. Chordata includes vertebrates and some invertebrate species characterized by a notochord, while Mollusca includes animals such as snails and octopuses, recognized for their soft bodies and often a hard shell. Oligochaeta, on