Insecta MCQs December 4, 2025September 28, 2024 by u930973931_answers 30 min Score: 0 Attempted: 0/30 Subscribe 1. Insects are characterized by having how many legs? (A) Six (B) Four (C) Eight (D) Ten 2. Which of the following is NOT a characteristic of insects? (A) Three body segments (B) Gills for respiration (C) Exoskeleton (D) Compound eyes 3. The largest order of insects is: (A) Lepidoptera (B) Diptera (C) Coleoptera (D) Hymenoptera 4. Insects undergo which type of development? (A) Direct development (B) Indirect development (C) Both A and B (D) None of the above 5. Which structure in insects is primarily used for flight? (A) Antennae (B) Legs (C) Abdomen (D) Wings 6. Which of the following insects undergoes complete metamorphosis? (A) Grasshopper (B) Ant (C) Butterfly (D) Cockroach 7. Which part of the insect's body contains the heart? (A) Head (B) Abdomen (C) Thorax (D) All of the above 8. Insects breathe through: (A) Gills (B) Tracheae (C) Lungs (D) Skin 9. Which of the following is a feature of the insect exoskeleton? (A) It allows for gas exchange (B) It is flexible and soft (C) It is made of chitin (D) It provides no protection 10. The process of shedding the exoskeleton is known as: (A) Metamorphosis (B) Growth (C) Molting (D) Regeneration 11. Which of the following insects has a proboscis for feeding? (A) Ladybug (B) Grasshopper (C) Mosquito (D) Beetle 12. Insects communicate primarily through: (A) Sounds (B) Smells (C) Visual signals (D) All of the above 13. Which order of insects is known for having a complete life cycle with egg, larva, pupa, and adult stages? (A) Orthoptera (B) Diptera (C) Hemiptera (D) Lepidoptera 14. Insects in the order Hymenoptera include: (A) Beetles and butterflies (B) Flies and mosquitoes (C) Ants and bees (D) Cockroaches and grasshoppers 15. Which of the following is an example of a social insect? (A) Butterfly (B) Dragonfly (C) Honeybee (D) Cicada 16. Insects have a nervous system that includes: (A) A dorsal nerve cord only (B) A brain and ventral nerve cord (C) No nervous system (D) A centralized nerve net 17. Which part of the insect is primarily responsible for sensory functions? (A) Thorax (B) Antennae (C) Abdomen (D) Wings 18. Insects can be classified as: (A) Herbivores (B) Carnivores (C) All of the above (D) Omnivores 19. The mouthparts of a grasshopper are adapted for: (A) Sucking (B) Lapping (C) Chewing (D) Piercing 20. Which of the following is a primary defense mechanism in insects? (A) Flight (B) Camouflage (C) Poison (D) All of the above 21. Which insect is known for its role in pollination? (A) Ant (B) Cockroach (C) Mosquito (D) Butterfly 22. Insects are an important food source for: (A) Mammals (B) Birds (C) All of the above (D) Reptiles 23. Insects belong to which subphylum? (A) Myriapoda (B) Hexapoda (C) Crustacea (D) Chelicerata 24. Insects can be harmful by: (A) Transmitting diseases (B) Causing crop damage (C) All of the above (D) Infesting homes 25. The term "metamorphosis" refers to: (A) The process of feeding (B) The change in body form during development (C) The shedding of the exoskeleton (D) The mating process 26. Insects are classified as: (A) Deuterostomes (B) Echinoderms (C) Protostomes (D) Chordates 27. The most diverse group of animals on Earth is: (A) Insects (B) Birds (C) Fish (D) Mammals 28. Which of the following is a method of insect locomotion? (A) Walking (B) Jumping (C) All of the above (D) Flying 29. Insects can perceive sounds through: (A) Ears (B) Sensory hairs (C) Antennae (D) All of the above 30. The lifespan of insects can range from: (A) Days to weeks (B) Months to years (C) Days to years (D) Minutes to hours