Question

In insects, the effect of juvenile hormone is to

• A. Potentiate effect of ecdysone
• B. Oppose the effect of ecdysone
• C. Effect maturation
• D. Prevent maturation.

Answer 1

Answer: (D)

Prevent maturation.

In insects, Juvenile Hormone (formerly called neotenin) refers to a group of hormones, which ensure the growth of the larva, while preventing metamorphosis. Because of their rigid exoskeleton, insects grow in their development by successively shedding their exoskeleton (a process known as moulting). Juvenile hormones are secreted by a pair of endocrine glands behind the brain called the corpora allata. JHs are also important for the production of eggs in female insects.

So, the correct answer is 'Prevent maturation'.