Question

Which of the following is not an insect?
A: Mosquito
B: Housefly
C: Spider
D: Butterfly

Answer 1

Insects are classified as Hexapoda or Insects and belong to the phylum Arthropoda's biggest category. Insects have a segmented body with jointed legs and an exoskeleton. The head, the segmented thorax, and the abdomen, which houses the digestive, respiratory, reproductive, and excretory organs, are all distinguishing aspects of insects.Insects have the ability to survive in any environment. Insects are extremely important to the world's environment because they aid in the fertilisation of plants and the decomposition of plant and animal parts.

Complete explanation
Option A:
Mosquitoes are dipterans, or flies, which are a type of insect. They have one pair of wings, one pair of halters, three pairs of long legs, and elongated mouthparts.
So, option A is incorrect.
Option B:
The housefly is a common insect belonging to the Muscidae family (order Diptera).Adults have a single pair of membranous wings, four dark longitudinal lines on the thorax, and a slightly hairy body.
So, option B is incorrect.
Option C:
Spiders are classified as Arachnids and are not considered insects. Antennae and wings are present on the insects. The spiders are arachnids, which means they don't have antennae or wings.
So, option C is correct.
Option D:
Butterflies are insects which belong to the Lepidoptera orderAdult butterflies have huge, typically vividly coloured wings that flap in the breeze.
So, option D is incorrect.

So, option C) is the correct answer.

Note
Entomology is a branch of zoology that is primarily concerned with the study of insects, their characteristics, general anatomy, morphology, and contributions to biological diversity, among other things.Insects are the largest group of the Arthropoda phylum.They can be found in nearly every ecosystem and play an important role in agriculture, biodiversity, evolution, and ecology, among other things. Butterflies, bed bugs, houseflies, mosquitoes, and other insects are among the many species of insects. Because insects cater to such a large population, their lifespan varies from species to species.