Question

Ticks and mites are actually
A. Arachnids
B. Crustaceans
C. Insects
D. Myriapods

Answer 1

Hint: Animals with three pairs of legs are called insects. The body of insects are divided into three segments. They are the head, thorax, and abdomen. They belong to a phylum which is the largest phylum in kingdom animalia.

Complete answer: The largest phylum in kingdom animalia is arthropoda. The word meaning of the term arthropoda is jointed appendages. Animals in this phylum have jointed appendages. This phylum includes the class insecta which are the animals with three pairs of legs. Arthropoda consists of animals that have their body covered by a chitinous exoskeleton which is for protection. Sensory organs of these animals include eyes, antennae, and statocysts. Examples of insects are beetles, fly, dragonfly, cockroach, etc. Ticks and mites are animals that belong to the class Arachnida. Spiders and scorpions belong to this class of animals. Most of the animals in class Arachnida have eight legs. They are different from insects as most of them lack antennae or wings. The body of these animals are segmented and covered by a thick exoskeleton like other arthropods. Myriapoda is a class in the phylum arthropoda that includes the animals that include centipedes, millipedes, etc.
Hence, the correct option is A.

Note: Chitinous exoskeleton of arthropods can be periodically removed and renewed. This process is known as moulting or ecdysis. This process helps in the growth and expansion of the body of these animals. The exoskeleton made up of chitin also contains certain proteins and is hardened by calcium carbonate and calcium phosphate.