Horticulture - Study Mode
[#351] Triploid species of Citrus is
Correct Answer
(C) Citrus latifolia
Explanation
Solution: The triploid species of Citrus is Citrus latifolia . It is also known by other common names such as seedless lime, Bearss lime and Tahiti lime. It is a citrus fruit species of hybrid origin, known only in cultivation. The Persian lime is a triploid cross between key lime ( Citrus × aurantiifolia ) and lemon ( Citrus × limon ). The fruit turns yellow as it ripens, but it is universally sold while still green. It is larger, thicker-skinned, with less intense citrus aromatics than the key lime.
[#352] Guava bears fruits on
Correct Answer
(C) Mixed bearing
Explanation
Solution: Guava bears fruits on Mixed bearings . It is one of the most common and major fruits of India and is considered the fourth most important fruit in the area and production after mango, banana and citrus. It is a hardy and prolific bearer and highly remunerative fruit. While guava can be grown from seed, it will not be true to the parent and may take up to 8 years to produce fruit. Trees are more commonly propagated via cuttings and layering. In this case, guava tree fruiting should occur when the tree is 3 - 4 years of age.
[#353] Monoembryoic variety of Mandarin is
Correct Answer
(A) Temple
Explanation
Solution: Monoembryoic variety of Mandarin is Temple . Temple oranges, also known as tangor, are hybrid citrus fruits. They're hybrids of the mandarin orange and the sweet orange. The name tangor is a combo of tangerine and orange. Spicy sweet, with a hint of sparkling tartness, the Temple is one of the more full-flavored, complex citrus fruits you can buy. Temple Oranges have little to no seeds, the seeds are monoembryonic.
[#354] Storing of seeds at freezing temperature is
Correct Answer
(C) Ex-situ conservation
Explanation
Solution: Storing seeds at freezing temperature is Ex-situ conservation . Ex situ conservation means, "off-site conservation". It is the process of protecting an endangered species, variety, or breed, of plant or animal outside its natural habitat. Seeds were stored in paper bags and either kept in a cold chamber (7 ± 2°C) in the dark ( ex situ conservation) or buried in the soil to a depth of 5 cm in an area of the natural occurrence of the species ( in situ conservation). Ex situ conservation is the most efficient way to maintain the viability of the seeds of this endangered species.
[#355] Deficiency of which vitamin causes night blindness?
Correct Answer
(A) Vitamin-A
Explanation
Solution: Night Blindness is caused by the deficiency of Vitamin-A . Night blindness is the difficulty for the eyes to adjust to dim light. Affected individuals have poor vision in the darkness but see normally when adequate light is present. A deficiency of vitamin A is a lack of vitamin A in blood and tissues. Vitamin A deficiency is the world's leading cause of preventable childhood blindness. Concentrations of preformed vitamin A are highest in the liver, fish, eggs, dairy products, and orange and other yellow fruits and vegetables.