Plant Pathology - Study Mode

[#806] Transfer of pollen to the stigma of another flower of the same plant is
Correct Answer

(D) Geitonogamy

Explanation

Solution: Transfer of pollen to the stigma of another flower of the same plant is Geitonogamy. Geitonogamy is a type of self-pollination. Geitonogamous pollination is sometimes distinguished from the fertilizations that can result from it, geitonogamy. If a plant is self-incompatible, geitonogamy can reduce seed production. Geitonogamy is when pollen is exported using a vector (pollinator or wind) out of one flower but only to another flower on the same plant. It is a form of self-fertilization.

[#807] Fertiliser needed to make 300 L of 1% solution is
Correct Answer

(A) 3 kg

Explanation

Solution: Fertiliser needed to make 300 L of 1% solution is 3 kg. As 1% of 300 is 3 therefore, the amount of fertilizer required will be 3 kg. The amount of fertilizer is decided after the proper testing of soil, and what nutrient is required in which amount according to the type of crop grown on that certain piece of land.

[#808] Respiration differs from combustion in
Correct Answer

(C) Liberation of energy gradually in steps in contrast to combustion

Explanation

Solution: Respiration differs from combustion in the Liberation of energy gradually in steps in contrast to combustion. Respiration is the movement of oxygen from the outside environment to the cells within tissues and the removal of carbon dioxide in the opposite direction that's to the environment. Combustion is a chemical process in which a substance reacts rapidly with oxygen and gives off heat. The original substance is called the fuel, and the source of oxygen is called the oxidizer.

[#809] SSP can have an edge and DAP in the soil is
Correct Answer

(D) Deficient in S

Explanation

Solution: SSP can have an edge and DAP in the soil is Deficient in S. SSP is the most popular phosphatic fertilizer after DAP and it contains 3 major plant nutrients namely Phosphorus, Sulphur, and Calcium along with traces of many micro-nutrients. DAP is Diammonium phosphate, it is a series of water-soluble ammonium phosphate salts that can be produced when ammonia reacts with phosphoric acid. SSP can have an edge in supplying Sulphur as it provides Sulphur also as a nutrient whereas DAP does not provide Sulphur to the soil thus it makes soil deficient I Sulphur.

[#810] The 1 st commercially exploited mycoherbicide is
Correct Answer

(A) COLLEGO

Explanation

Solution: The 1 st commercially exploited mycoherbicide is COLLEGO. A mycoherbicide is an herbicide based on a fungus. As a biological agent, it works by producing toxic compounds that dissolve the cell walls of targeted plants". Unlike traditional herbicides, mycoherbicides can reproduce themselves and linger in the soil for many years to destroy replanted crops. Collego is a wettable powder formulation of Collectotrichum gloeosporoids f. Sp. aeschenomene is used for controlling Northern joint with (Aschenomene virginica) in rice and soybean.