Plant Pathology MCQ Question and Answer | Agriculture MCQ Question

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.

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.

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.

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.

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.

Erwinia amylovora enters host tissue through Nectaries.
Erwinia amylovora is the causative agent of fire blight, a devastating necrotic disease affecting apple, pear, and other rosaceous plants. Entry of the bacterium into plants can occur via flower blossoms or actively growing young shoots or through wounds.
The infected flowers remain attached to the cluster base even as it dies, allowing for infection to spread to other flowers on the same cluster.

Enzymes taking part in glycolysis are present in Cytoplasm.
Glycolytic enzymes are located in the sarcoplasm and are associated with the sarcoplasmic reticulum. They convert glucose-6-phosphate and nicotinamide adenine dinucleotides (NAD⁺) to pyruvate and NADH by producing two molecules of ATP.
The enzymes of several major metabolic pathways are located within the cytoplasm, for example, glycolysis and fatty acid synthesis.

Organic compound invariably contains Carbon.
Organic compounds are generally chemical compounds that contain carbon-hydrogen or carbon-carbon bonds. Due to carbon's ability to catenate (form chains with other carbon atoms), millions of organic compounds are known.
The organic compound L-isoleucine molecule presents some features typical of organic compounds: carbon-carbon, carbon-hydrogen, as well as covalent bonds from carbon to oxygen and nitrogen.

Thiram fungicides are not systemic.
A SYSTEMIC fungicide may be defined as a fungicidal compound that is readily translocated as such in the plant, rendering the tissues penetrated toxic to fungi.
Thiram is the simplest thiuram disulfide and the oxidized dimer of dimethyldithiocarbamate. It is used as a fungicide, ectoparasiticide to prevent fungal diseases in seeds and crops and similarly as an animal repellent to protect fruit trees and ornamentals from damage by rabbits, rodents and deer.

Metalaxyl fungicide is used against Oomycetes class of fungi.
Metalaxyl is a systemic fungicide used to control plant diseases caused by Oomycete fungi.
Its formulations include granules, wettable powders, dust, and emulsifiable concentrates. Application may be by foliar or soil incorporation, surface spraying (broadcast or band), drenching and seed treatment.