Horticulture - Study Mode

[#946] Potato Witches Broom is caused by
Correct Answer

(A) MLOs

Explanation

Solution: Potato Witches Broom is caused by MLOs. Potato witch broom is a plant disease that occurs as an abnormal brushlike cluster of dwarfed weak shoots arising at or near the same point. Witches broom are caused by a phytoplasma transmitted by several species of leafhopper and within the potato plant seed pieces. Leaves started rolling up and have yellow margins. Plants are dwarfed in the field.

[#947] Cluster bean contains mucilaginous substance is
Correct Answer

(A) Mannogalacton

Explanation

Solution: Cluster bean commonly known as guar has come to be recognized as one of the most important commercial crops of arid and semi-arid regions. It is a drought-hardy leguminous crop because of its deep tap rooting system and has a high capacity to recover from water stress. Cluster bean contains a mucilaginous substance that is Mannogalacton . The seed of cluster bean contains about 30 - 33% gum in the endosperm. The discovery of the Mannogalacton gum in the endosperm in 1948, led to this hitherto insignificant plant gaining importance as an industrial crop.

[#948] Which one of the following is the permanent method of preservation of fruits and vegetables?
Correct Answer

(D) Exlusion of moisture

Explanation

Solution: Exclusion of moisture is the permanent method of preservation of fruits and vegetables. Drying is the method of preservation of fruits and vegetables usually practiced in homes. Drying is done to remove moisture from the fruits and vegetables that reduce the chances of rotting and ant microbial activity. Thus it enables us to keep it and used it later whenever required in off season also.

[#949] Premature setting of jam is due to
Correct Answer

(A) Low TSS

Explanation

Solution: The premature setting of the jam is due to Low TSS. This problem arises due to the presence of low total soluble solids and high pectin content. A high percentage of total soluble solids makes the jam sticky and gummy. This can be prevented by the addition of a sufficient amount of citric acid, pectin, or both.

[#950] Which crop gives higher protein recovery per unit area?
Correct Answer

(C) Carrot

Explanation

Solution: From the given options Carrot gives higher protein recovery per unit area. Raw carrot have 88% water, 9% carbohydrates, 0.9% protein, 2.8% dietary fiber, 1% ash and 0.2% Fat. Carrot is one of the important root vegetables rich in bioactive compounds like carotenoids and dietary fibers with appreciable levels of several other functional components having significant health-promoting properties. The consumption of carrots and their products is increasing steadily due to their recognition as an important source of natural antioxidants having anticancer activity.