Juvenile hormone causes

Options

A. Early sexual maturity
B. Late sexual maturity
C. Completion of larval stages
D. Development of giant larva without ability to undergo maturation

Answer

**Step-by-Step Solution:**

1. **Understanding Juvenile Hormone**: Juvenile hormone, also known as Neotenin, is a hormone found in insects. It is secreted by glands located near the brain.

2. **Role of Juvenile Hormone**: The primary function of juvenile hormone is to inhibit the genes responsible for the development of adult characteristics in immature insects. This means that it helps maintain the insect in its immature state, such as nymphs or larvae.

3. **Effects of Juvenile Hormone**: By inhibiting the development of adult features, juvenile hormone allows larvae to grow without undergoing maturation. This results in the retention of juvenile characteristics during the larval stages.

4. **Analyzing the Options**:
- **Option 1: Early Sexual Maturity**: This is incorrect because juvenile hormone inhibits the development of sexual maturity.
- **Option 2: Late Sexual Maturity**: This is also incorrect for the same reason; it does not promote sexual maturity.
- **Option 3: Completion of Larval Stages**: This is incorrect as juvenile hormone helps retain the larval state rather than completing it.
- **Option 4: Development of Giant Larva without Ability to Undergo Maturation**: This is the correct option, as juvenile hormone allows larvae to grow larger without transitioning to the adult stage.

5. **Conclusion**: The correct answer is that juvenile hormone causes the development of giant larvae without the ability to undergo maturation.

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