Plant Pathology - Study Mode

[#586] Which fungicide has both basipetal and acropetal movement?
Correct Answer

(C) Fosetyl Al

Explanation

Solution: Fosetyl Al fungicide has both basipetal and acropetal movement. Fosetyl-aluminium is a pesticide used as a fungicide to control various diseases on food and feed crops. This compound is rapidly converted to phosphonic acid, which is regularly detected in poorly processed food products. Fosetyl- al is an active ingredient, and was developed in France at the end of the 1970s, is characterized by acropetal and basipetal translocation in plants.

[#587] On an average 1 kg N, P 2 O 5 , K 2 O is added to increase grain yield by
Correct Answer

(C) 10 kg

Explanation

Solution: On an average 1 kg N, P 2 O 5 and K 2 O are added to increase grain yield by 10 kg. Nitrogen, phosphorus, and potassium are macronutrient uptake by crop yields and crop residues by attaining high-input potential yields compared to that low-input yields, and the number of fertilizers applied. On average 1 kg of N, P 2 O 5 and K 2 O are added to increase grain yield by 10 kg.

[#588] In alcoholic fermentation
Correct Answer

(A) Triose phosphate is electron donor while acetaldehyde is electron acceptor

Explanation

Solution: In alcoholic fermentation, Triose phosphate is electron donor while acetaldehyde is electron acceptor. Alcoholic fermentation is a complex biochemical process during which yeasts convert sugars to ethanol, carbon dioxide, and other metabolic by-products that contribute to the chemical composition and sensorial properties of the fermented foodstuffs. The energy released by these exothermic reactions is used to phosphorylate two ADP molecules, yielding two ATP molecules, and reduce two molecules of NAD + to NADH. The 2 pyruvate molecules are broken down, yielding two molecules of acetaldehyde and giving off two molecules of carbon dioxide.

[#589] The incidence of black scurf of potato is more in
Correct Answer

(A) Sandy soil

Explanation

Solution: The incidence of black scurf of potato is more in Sandy soil. Black scurf is caused by the fungus Rhizoctonia solani, which can exist in the soil in the absence of potatoes. Rhizoctonia solani is a soil pathogen and thus is affected by soil conditions. Black scurf and stem canker are more severe in soils that are cool and moist. It is more common in crops grown in sandy to sandy loam and moderately wet soils.

[#590] The phenomenon of embryo formation from a vegetative cell derived from zygote is known as
Correct Answer

(C) Adventitive polyembryony

Explanation

Solution: The phenomenon of embryo formation from a vegetative cell derived from zygote is known as Adventive polyembryony. Polyembryony is the phenomenon of two or more embryos developing from a single fertilized egg. Adventitious embryonic from nucellar cells is the mechanism leading to apomixis in most plants or it can be referred to as formation of extra embryos by the impact of sporophytic budding from as adventitious cells.