Horticulture - Study Mode

[#426] Vegetable that is a rich source of ascorbic acid is
Correct Answer

(A) Chilli

Explanation

Solution: Vegetable that is a rich source of ascorbic acid among the given options is Chilli . The most important vitamin in fruits and vegetables is vitamin C. 90% of the ascorbic acid in human diet was supplied by them. Chilli can give more vitamin C than an orange. These fiery peppers beat oranges 3 to 1 in terms of the immune-boosting nutrient. It is said that a half cup of chopped or diced chilli peppers can deliver 107.8 mg of vitamin C. Hot chilli peppers are packed full of nutrients and antioxidants, including vitamin C, which can help boost your immunity and offer a wide range of health benefits.

[#427] Potato tubers cotains less then . . . . . . . . mg solanine per 100 g fresh weight is considered safe for human consumption
Correct Answer

(A) 20

Explanation

Solution: Potato tubers contain less than 20 mg solanine per 100 g fresh weight and is considered safe for human consumption. Solanine is naturally present in all potatoes, generally in the upper one-eighth of the skin. It is a colorless alkaloid with a bitter taste. Percentage of its amount is observed more in green potatoes. Solanine is not removed by boiling, but it can be destroyed by frying.

[#428] "Pungency" in chilli is due to presence of
Correct Answer

(A) Capsaicin

Explanation

Solution: Pungency in Chilli is due to presence of Capsaicin . The pungent feeling caused by allyl isothiocyanate, capsaicin, piperine and allicin is caused by activation of the heat thermo and chemosensitive TRP ion channels including TRPV1 and TRPA1 nociceptors. The pungency of chilies may be an adaptive response to microbial pathogens.

[#429] Indicator plant for tristeza virus in citrus is
Correct Answer

(B) C. aurantifolia

Explanation

Solution: Indicator plant for tristeza virus in citrus is C. aurantifolia . CTV is citrus tristeza virus, it is a viral species of the genus closterovirus that causes the most economically damaging disease of citrus. CTV is classically diagnosed by graft-inoculating a Mexican lime ( Citrus aurantifolia ) with tissue from a diseased plant. Symptoms on the leaves begin as clear veins that turn corky, which is then followed by chlorosis and cupping of the leaf.

[#430] The modern method of propagation of 'Guava' is
Correct Answer

(D) Stooling

Explanation

Solution: The modern method of propagation of ‘Guava’ is Stooling . It is the easiest and cheapest method of guava propagation which has been standardized at Indian Agricultural Research Institute (IARI), New Delhi. In this method plants are headed back to ground and shoots are allowed to develop on the beheaded stumps.