In this video, we discuss the life cycle of a tiny sewer worm, Silkworm, which produces silk threads. A silkworm is a larva that hatches from an egg and later transforms into an adult moth. The larva begins to protect itself by covering its body in a specific that called a cocoon. A cocoon is used as a silk source and then by putting it in hot water, the silk fibers become unwound.
The life cycle of this worm involves four stages:
- Stage 1: Egg
- Stage 2: Larva/Cocoon
- Stage 3: Pupa
- Stage 4: Moth
You can also download the presentation file and high-resolution picture of the Silkworm Life cycle for free.
Quiz
Do you think you fully understand the video? Now let’s test Your Knowledge. Here are some quiz questions and fill-in-the-blank exercises about the lifecycle of silkworms, along with their answers:
Quiz Questions:
What is the larval stage of the moth Bombyx mori commonly known as?
A) Silk egg
B) Silkworm
C) Silk pupa
D) Silk moth
Answer: B) Silkworm
How many eggs can a female silkworm lay in one sitting?
A) 50-100
B) 200-300
C) 350-400
D) 500-600
Answer: C) 350-400
What is the primary food source for silkworms during their larval stage?
A) Mulberry leaves
B) Silk fibers
C) Nectar
D) Insects
Answer: A) Mulberry leaves
How long does it take for a silkworm to spin its cocoon?
A) 8-12 hours
B) 24-36 hours
C) 48-60 hours
D) 72-84 hours
Answer: B) 24-36 hours
What is the fate of the silkworm pupa in the process of silk production?
A) It is allowed to hatch into a moth.
B) It is frozen to preserve the silk.
C) It is boiled to extract the silk.
D) It is dried to strengthen the silk.
Answer: C) It is boiled to extract the silk.
How long does the entire life cycle of a silkworm typically last?
A) 4-5 weeks
B) 6-8 weeks
C) 10-12 weeks
D) 14-16 weeks
Answer: B) 6-8 weeks
Fill-in-the-Blank Questions:
The silkworm is the larval stage of the moth known as _____________.
Answer: Bombyx mori
After hatching from the egg, the silkworm enters a phase where it feeds on _____________ for about 20 to 33 days.
Answer: mulberry leaves
The silkworm spins a cocoon made of silk, which can contain up to _____________ of silk fiber.
Answer: one kilometer
Inside the cocoon, the silkworm transforms into a _____________, which is the inactive stage before becoming a moth.
Answer: pupa
The silkworm’s life cycle is completed when the pupa develops into an adult _____________.
Answer: moth
The entire life cycle of a silkworm typically lasts _____________ weeks.
Answer: six to eight
