Question

Sorghum and cotton are respectively useful for
(a) Blood purification and organic fertilizer
(b) Animal food and paper industry
(c) B vitamin and cosmetics
d) Explosives and organic fertilizer
A. a, b
B. c, d
C. b, c
D. b, d

Answer 1

Sorghum is commonly known as jowar and most of its species, due to rich in protein content have been used as cereals. Cotton is a soft, fluffy fiber that is rich in cellulose content and it also has a highly absorptive nature.

Complete answer:
-Option (A) is incorrect. Point (a) does not include correct uses of Sorghum and cotton. Sorghum is an excellent source of antioxidant and has no role in blood purification and also cotton is not used as an organic fertilizer. While point (b) includes correct uses of both Sorghum as well as cotton.
-Option (B) is incorrect. Point (c) stands true while point (d) does not include correct uses of Sorghum and cotton.
-Option (C) is correct. Both points (b) and (c) describe the correct usage of Sorghum and cotton.
Sorghum is commonly known as ‘jowar’ and it is a genus of angiosperms that belong to the grass family i.e., Poaceae. Some of the species that have been grown as cereals within this genus have been used by humans and animals as food. One of its species i.e., Sorghum bicolor that is native to Africa has been used for food, animal fodder, production of alcoholic beverages, and also biofuels. It can also be considered as a nutrient-packed grain because it is enriched with vitamins i.e., B vitamins and certain minerals.
The cotton plant belongs to the genus Gossypium in the family Malvaceae. Cotton from the cotton plant is soft, fluffy staple fiber that is almost pure cellulose. Since cellulose is used in the making of the paper, Therefore, cotton fiber being pure cellulose can be used in the paper industry. As cotton has a highly absorptive and soft nature, it has also been used for making cotton pads for applying or removing makeup. Hence, it is also being used in the application of cosmetics.
-Option (D) is incorrect. Point (b) includes correct uses of Sorghum and cotton but not point (d).

Hence, the correct option is (C).

Note:
Sorghum is very rich in proteins and B vitamins. Other minerals like magnesium, phosphorus, zinc, etc.. are also present in Sorghum making it a rich source of nutrients and being used as food by humans and animals. Cotton, apart from being useful in the paper industry and cosmetics, has also been used in the textile industry, making fishing nets, explosives (i.e., nitrocellulose), etc.