Question

What are G. arboretum, G. herbarium, G. hirsutum, and G. barbadense whose all four species are cultivated in India? ( G = Gossypium)
A. Species of wool
B. Species of cotton
C. Species of Silk
D. Species of jute

Answer 1

Hint: Gossypium is the genus of a flowering plant. It belongs to the family Malvaceae. The plants belonging to the genus have palmately lobed leaves, showy flowers, capsular fruits with long-tailed seeds. The genus is derived from the Arabic word goz, meaning soft substance, mainly found in tropical and sub tropical areas. There are as many as Gossypium species.

Complete answer:
Wool is an animal product obtained from sheep. The genus of this animal is mainly Ovis. Hence option A. Species of wool are incorrect.
Silk is also an animal product obtained from the silkworm. The species of silkworm known for best silk production is Bombyx mori. The other species of silkworm includes Antheraea (Muga silkworm), Philosamia ( Eri silkworm), and others. Hence the option C. Species of silk is incorrect.
Jute is a plant species belonging to the family Malvaceae but the genus of jute is Corchorus. White jute (Corchorus capsularis) and dark jute ( Corchorus olitorius) are the two main species of jute. Hence the option D. Species of jute is incorrect.
Cotton is a plant belonging to the family Malvaceae and the genus Gossypium. The species Gossypium arboreum, Gossypium herbarium, Gossypium hirsutum, and Gossypium barbadense are the four main species of the cotton plant from where commercially cotton is obtained.

Hence option B. Species of cotton are correct.

Note :
Cotton is mainly used in the textile industry for the preparation of clothes. The other uses of cotton include the preparation of fishing nets, coffee filters, cotton paper. The cottonseed present inside the cotton is used in the production of cottonseed oil. Black soil is suitable for the growth of cotton due to its high clay content. Cotton also grows in sandy to sandy loam soil.