Complete metamorphosis occurs in :

Question

Accepted Answer

Complete metamorphosis, also known as holometabolism, is a type of insect development that includes four distinct life stages: egg, larva, pupa, and adult. This process is characterized by a significant transformation in form and function between the larval and adult stages.

1. **Explanation for Option 4 (Mosquitoes):**
   Mosquitoes undergo complete metamorphosis. Their life cycle begins with eggs, which hatch into larvae (commonly known as wrigglers). These larvae live in water and undergo several molts before becoming pupae. The pupal stage is a resting phase where the mosquito undergoes significant transformation. Finally, the adult mosquito emerges from the pupal case. This complete metamorphosis involves a drastic change in form and function, distinguishing it from other types of metamorphosis.

2. **Explanation for why other options are incorrect:**

- **Option 1 (Silver fish):** Silverfish undergo a type of development known as ametabolous metamorphosis, which means they do not undergo significant changes in form as they grow. They hatch from eggs looking like miniature adults and grow larger through successive molts without a pupal stage.

- **Option 2 (Locust):** Locusts undergo incomplete metamorphosis, also known as hemimetabolism. Their life cycle includes three stages: egg, nymph, and adult. The nymphs resemble adults but are smaller and lack fully developed wings and reproductive organs. They gradually develop these features through successive molts, without a pupal stage.

- **Option 3 (Bedbug):** Bedbugs also undergo incomplete metamorphosis. Their development includes three stages: egg, nymph, and adult. The nymphs look similar to adults but are smaller and not sexually mature. They molt several times before reaching adulthood, without undergoing a pupal stage.

In conclusion, mosquitoes are the only option among the given choices that undergo complete metamorphosis, making Option 4 the correct answer.