An insect without pupa stage is

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1 Answer

answered Mar 2, 2022 by PrashantPandey (238k points)
selected Mar 2, 2022 by ShreeHarpale

Best answer

Correct Answer - Option 3 : Bedbug

Explanation-

Cimex lectularius, the common bed bug, is best known as it prefers to feed on human blood.
Bed bugs are mainly active at night but are not exclusively nocturnal.
The life cycle of a bed bug-
- Stage 1 - A female bed bug lays eggs up to 500 eggs. They are white in color. The eggs hatch in two weeks, and nymphs emerge.
- Stage 2 - The Nymph, which hatches from the egg is the second stage of the life cycle of the bed bug.
- Stage 3 - It takes five weeks for a nymph to become an adult. An adult bed bug lives for four to six months.
Eggs → Nymph → Bed bug

Thereby an insect without pupa stage is a bed bug.

Silkmoth-

Silkworms are a group of insects (moths), which are species-specific to their host plants.
Silk threads are obtained from the cocoon which is a protective covering around the pupa of these worms.
Life Cycle of silkworm
- Stage 1 - The cycle starts when a female silk moth lays eggs.
- Stage 2 - The caterpillar of larvae is hatched from the eggs of the silkmoth and they feed on mulberry leaves and consume a large amount of these leaves for around 30 days.
- Stage 3 -The silkworm spin a protective cocoon around itself.it is the size of a small cotton ball and is made of a single thread of silk.
- Stage 4 - Then Pupa changes into an adult moth. The female moth lays eggs after mating and thus the life cycle of the silkworm begins again.
Eggs → Caterpillar → Pupa → Butterfly

Mosquito-

Common mosquitoes are Anopheles, Culex, and Aedes.
They are small nocturnal insects.
The developmental stages of an adult mosquito, from its egg to an adult, is called metamorphosis.
The life cycle of a mosquito
- Stage 1 - Mosquito Egg eggs are small, nearly 200-300 eggs. This stage lasts for 24-48 hours.
- Stage 2 - Larva emerges out from the egg within 48 hours they eat algae and small organisms in the water. This stage lasts for 7-14 days.
- Stage 3 - Pupa formed from larva, floats in water. This is the hibernating stage when the pupa does not eat and only rest/sleep. This stage lasts for 1-4 days.
- Stage 4 - Adult mosquito splits the pupa case and comes out on the surface of the water. Female mosquito feeds on blood.
Eggs → Larva→ Pupa → Mosquito