Rearing of silkworm is known as:
A) Silviculture
B) Sericulture
C) Apiculture
D) Horticulture

Hint: Silk is made up of fibroin. Silk is produced by silkworm larvae to form cocoons. The rearing of silkworms is done on the mulberry trees because the silkworms feed on the leaves of the mulberry trees.

Complete answer:
The practice of planting, managing and caring for forests is known as silviculture.
Thus, option (A) is not correct.
The rearing of silkworms for the production of silk fibre is known as sericulture.
Thus, option (B) is correct.
The maintenance of colonies of bees in constructed hives is known as apiculture. It is used for production of honey.
Thus, option (C) is not correct.
The practice of growing flowers, fruits and vegetables i.e. gardening is known as horticulture.
Thus, option (D) is not correct.

Thus, the correct option is (B) sericulture.

Additional Information: The process of sericulture involves the following stages:
The silkworms are gathered and the cocoons which are made of silk are harvested to collect silk. The silk is collected by the process as follows.
Thread extraction
Dyeing
Spinning
Weaving
Finishing

Note: The process of sericulture is often accompanied by the process of moriculture. Moriculture is the cultivation of mulberry plants. The mulberry plants are generally used as a feed to the silkworms. The most commonly used species of silkworm for sericulture is Bombyx mori.