Question

Gossypium hirsutum is:

• A. old world diploid
• B. new world diploid
• C. old world tetraploid
• D. new world tetraploid

Hint:

Gossypium hirsutum is commonly known as upland cotton or Mexican cotton. 

Answer 1

The Correct Option is D

Gossypium hirsutum, commonly known as Upland cotton, is a new world tetraploid species of cotton plant. 

• It is one of the most widely cultivated species of cotton globally and is considered a major commercial crop. 
• G. hirsutum is prized for its long, soft fibers, which are used to produce textiles, clothing, and various other products. 
• This species is also unique in that it is the only one of the four major cultivated cotton species that produces cotton fibers that are suitable for use in the production of fine, high-quality textiles.
• Gossypium hirsutum is a new world tetraploid species which contains haploid chromosomes (n= 26).

Hence, Gossypium hirsutum is a new world tetraploid.

Answer 2

The Correct Answer is (D)

Real Life Applications

• The seeds may be consumed as a snack since they have a protein content of up to 40% and a nutty taste when roasted. They are also cooked and used in casseroles and soups similarly to rice. They may be used with flour for baking bread, cakes, etc. after being ground into a powder. Additionally, they may be turned into a spread like peanut butter. Some varieties of this plant generate seeds that must first be cleaned of the gossypol toxin before consumption. This toxin is not present in the seeds of cultivars without glands. Salads, cooking, and making margarine all use an oil made from the seed. 
• Children's skin rashes are treated with boiling leaves.

• After the oil has been expressed, low-grade seed cake is utilised as manure. 
• The seed floss is a good source of fibre. Numerous products are made from cotton fibres, including clothing, rubber-tire materials, filling for pillows and cushions, surgical dressings, twine and ropes, carpets, etc.
• The seed is used to make oil. Low-grades of the oil are utilised in the production of sulphonated oils, protective coatings, soap, and lubricants.
• Commercial cosmetic products include an extract from the seeds as a skin conditioner.
• Fuel is made from the dried stalks and seed hulls.

Question can also be asked as

• What is the scientific name for upland cotton?
• Where is Gossypium hirsutum native to?
• What are the different varieties of Gossypium hirsutum?
• What are the uses of Gossypium hirsutum?
• How is Gossypium hirsutum grown?
• What are the challenges of growing Gossypium hirsutum?
• What are the future prospects for Gossypium hirsutum?

Answer 3

The Correct Answer is (D)

Gossypium hirsutum is commonly known as upland cotton or Mexican cotton. 

• The United States is the most widely planted species of cotton constituting 95% of all cotton production.
• Most of the wild cotton is diploid, but a group of five species from the American and Pacific islands is tetraploid.
• This is apparently due to a single hybridization event around 1.5 to 2 million years ago.
• The tetraploid species are Gossypium hirsutum, Gossypium tomentosum, Gossypium barbadense, Gossypium mustelinum.

Thus, the Correct option is D) Gossypium hirsutum is new world tetraploid.

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