Horticulture - Study Mode
[#686] Over ripe banana give up Aronia due to
Correct Answer
(C) Isopentanol
Explanation
Solution: Overripe bananas emit a compound called isopentanol , also known as isoamyl alcohol, which contributes to their characteristic strong and sometimes unpleasant odor when they become very ripe. Isopentanol is a volatile organic compound that is released due to the breakdown of amino acids and fermentation processes occurring in the fruit as it overripens. This compound is also found in small quantities in alcoholic beverages and is associated with a fruity, pungent smell. Option A: Allyl dipropyl This is incorrect. Allyl dipropyl disulfide is associated with the smell of garlic, not bananas. Option B: Sugar This is incorrect. Although sugars increase as bananas ripen, they are not responsible for the aronia (odor) released during overripening. Option D: Acid This is incorrect. While acids are involved in fruit metabolism, they do not produce the characteristic aronia smell of overripe bananas. Therefore, the correct answer is Option C: Isopentanol , as it is the primary compound responsible for the strong smell associated with overripe bananas.
[#687] Vegetables are canned in
Correct Answer
(A) Brine
Explanation
Solution: Vegetables are canned in brine . In the canning process, vegetables are often cut into pieces, packed in cans and put through severe heat treatment to ensure the destruction of bacteria spores. The containers are sealed while hot to create a vacuum inside when they are cooled to room temperature. Canned vegetables are soaked in brine made predominantly of water and salt.
[#688] Which of the following fruit plants bear fruits twice a year 1. Cashew 2. Grape 3. Jack fruit 4. Pomegranate
Correct Answer
(C) 2, 3, 4
Explanation
Solution: Grape, jack fruit, and Pomegranate are fruit plants that bear fruits twice a year. In North India, grape orchards bear two crops in a year resulting in exceptionally high yield, however, the fruit quality is not so good. Jackfruit bears fruit during summer as well as during November-December. A mature jack tree produces some 200 fruits per year, with older trees bearing up to 500 fruits in a year. The pomegranate produces fruit at the end of new growth. Judicious pruning annually for the first three years will produce bushy plants with abundant new growth each year.
[#689] Chilling requirement for cabbage is
Correct Answer
(A) 4° - 10°C for 6 - 8 weeks
Explanation
Solution: The chilling requirement for cabbage is 4° - 10°C for 6 - 8 weeks . The chilling requirement of a fruit is the minimum period of cold weather after which a fruit-bearing tree will blossom. A chilling unit in agriculture is a metric of a plant's exposure to chilling temperatures. The seed production of cabbage is only possible under temperate conditions of Jammu where chilling requirements range from 4 - 10°C for 8 - 10 weeks after head formation prevails.
[#690] Pre-emergence of seed stalks prior to time of their formation at the cost of bulb formation and development in onion is known as
Correct Answer
(B) Bolting
Explanation
Solution: Pre-emergence of seed stalks before the time of their formation at the cost of bulb formation and development in onion is known as Bolting . It is a serious disorder of onion. It refers to the emergence of seed stalks before the time of their formation and adversely affects the formation and development of bulbs. Bolting is an undesirable character because it directly affects the bulb yield of onion.