Choke throat in banana is due to _______? (IFFCO 2022)

• The silkworm, like many insects, undergoes a complete metamorphosis with four distinct stages in its life cycle:
-Egg: The life cycle begins with the egg laid by the female moth.
-Larva (Caterpillar/Silkworm): The egg hatches into a larva, commonly known as a silkworm or caterpillar. This is the feeding and growth stage where the silkworm consumes mulberry leaves and increases significantly in size.
-Pupa: The larva spins a silk cocoon around itself and transforms into a pupa. Inside the cocoon, major developmental changes occur.
-Adult (Moth): The pupa develops into an adult moth, which emerges from the cocoon. The moth's primary function is to reproduce and lay eggs, starting the cycle anew.

🔑Key Points:
-The study of the cultivation of silkworms to produce silk is called Sericulture.
-The life cycle of a silkworm is Egg > Caterpillar > Pupa > Adult.
-The egg is the first and primary stage of the life cycle of Silkworm.
-The egg is laid by a  female moth and the egg is having the size of small dots.
-More than 350 eggs are laid by a female moth at a time.
-The eggs hatch in the springtime due to the warmth in the air.
-This procedure takes place once a year.
-Silkworm arises after the eggs crack and they are hairy.
-They feed on mulberry leaves and consume a large amount of these leaves for around thirty days.
-The Silkworms spin a cocoon around themselves which protects them.
-This cocoon is made up of a single thread of soil.
-Cocoon appears as a small cotton ball.
-The pupa is a motionless stage.
-The last stage is when the Pupa changes into an adult moth.
-The Silk was invented around 3500 BC in China.