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There are more than billions of different species of insects that have been described till date.

An Overview Insects emerge from the largest division of phylum Arthropoda and belong to the class Hexapoda or Insecta. There are more than billions of different species of insects that have been described till date. The branch of zoology, which is mainly concerned with the study of insects, general anatomy, morphology, its characteristics and its contributions to biological diversity is termed Entomology Explore more:  E ntomology Which of the following statements is true about Entomology? (a) The study of Birds (b) The study of Insects (c) The study of Microbes (d) The study of Parasitic worms Sol: (b) The study of Insects. Which of the following are the main characteristic features of an Insect? (a) Pair of antennae (b) Three pairs of legs (c) Pair of wings (d) All of the above Sol: (b) Three pairs of legs. Which of the following is called the resting and inactive stage in the insect life cycle? (a) The Egg stage (b) The Larva stage (c) The pupa stage (d) The Adult stage Sol: (c) The pupa stage. Which of the following is not a natural predator of BPH? (a) Bugs (b) Red ants (c) Spiders (d) All of the above Sol: (b) Red ants. Insects, which feed on one type of food, are called _______. (a) Polyphagous (b) Monophagous (c) Entomophagy (d) None of the above Sol: (b) Monophagous. Insects are classified into the phylum_______. (a) Nematoda (b) Mollusca (c) Arthropoda (d) Platyhelminthes Sol: (c) Arthropoda. Which of the following insects is the carrier of grassy stunt pathogenic virus? (a) Red ants (b) Pink ants (c) Leafhoppers (d) All of the above Sol: (c) Leafhoppers. Which of the following statements is true for Entomophagy? (a) Refers to eating birds (b) Refers to eating insects (c) Refers to eating fishes (d) None of the above Sol: (b) Refers to eating insects. The total number of abdominal legs in the larval stage of the mustard sawfly is ______. (a) 2 pairs (b) 4 pairs (c) 6 pairs (d) 8 pairs Sol: (d) 8 pairs. Which of the following statements is true about the holometabolous insects? (a) These insects undergo complete metamorphosis (b) These insects undergo incomplete metamorphosis (c) Both A and B (d) None of the above Sol: (a) These insects undergo complete metamorphosis. Aphid, small, sap-sucking insects are examples of _________. (a) Oviparous (b) Viviparous (c) Paedogenesis (d) Parthenogenesis Sol: (b) Viviparous. Which of the following structures is not the part of the insects head capsule? (a) Vertex (b) Antennae (c) Pronotum (d) Tentorium Sol: (c) Pronotum. Odontotermes obesus  is the scientific name of which of the following insects? (a) Termite (b) Cutworm (c) Red ant (d) Shoot borer Sol: (a) Termite. The process of killing pupa without changing the cocoon shell layer is called_________. (a) Denier (b) Dupion (c) Hatching (d) Stifling Sol: (d) Stifling. Which of the following is true about the immature scale insects? (a) Sliders (b) Crawlers (c) Gliders (d) None of the above Sol: (b) Crawlers. The excreta of the earthworm is called ______. (a) Vermi-manure (b) Vermicast (c) Vermicompost (d) All of the above Sol: (b) Vermicast. What is the middle part of an insect body present between the head and the abdomen called? (a) Thorax (b) Head (c) Abdomen (d) None of the above Sol: (a) Thorax. Which of the following statements is true about why spiders are not classified into insects? (a) Spiders are venomous (b) Spiders have eight legs (c) Spiders have 2 division in their bodies (d) All of the above Sol: (d) All of the above. Which of the following statements is true about the Anatomy of a cockroach? (a) A pair of testes are present in the 2nd segment (b) A pair of ovaries are present in the 4th segment (c) The thorax of a cockroach is divided into 6 segments (d) The abdomen region of a cockroach is divided into 10 segments Sol: (d) The abdomen region of a cockroach is divided into 10 segments. Insects breathe through ________. (a) Gills (b) Nostrils (c) Spiracles (d) None of the above Sol: (c) Spiracles. Also Refer:  Life Cycle of an Insect