Plant Pathology MCQ Question and Answer | Agriculture MCQ Question

SSP (Single Super Phosphate) is the most popular phosphatic fertilizer. The percentage of P₂O₅ is approximately 16 - 20% in SSP.
TSP (Triple Super Phosphate), is a chemical fertilizer with a P₂O₅ content of over 40 - 48%.
DAP (Diammonium Phosphate) is a widely used phosphate-based fertilizer with a phosphorus content of 54%.
Rock phosphate is the phosphorite, is mined from clay deposits that contain phosphorus and is used to make organic phosphate fertilizers that many gardeners utilize. It contains 20 - 30% of P₂O₅.

The chemical pesticide present in Baygon is Propoxur.
Baygon is a pesticide brand produced by S. C. Johnson & Son. It is an insecticide used for the extermination and control of household pests such as crickets, roaches, ants, carpenter ants, spiders, silverfish and mosquitoes.
Baygon products contain the pyrethroids cyfluthrin, transfluthrin, cypermethrin, prallethrin, and the carbamate propoxur and organophosphorus chlorpyrifos, as active ingredients.

Sterilization in an autoclave is done at 121.7°C for 15 mins at a pressure of 15 psi.
An autoclave is a machine used to carry out industrial and scientific processes requiring elevated temperature and pressure about ambient pressure and/or temperature. Autoclaves are used before surgical procedures to perform sterilization and in the chemical industry.
Many autoclaves are used to sterilize equipment and supplies by subjecting them to pressurized saturated steam at 121°C (250°F) for around 30 - 60 minutes at a pressure of 15 psi depending on the size of the load and the contents.

Enzyme pair common to both EMP and C₃ cycle is Aldolase and triose phosphate isomerase.
The TPI1 gene provides instructions for making an enzyme called triose phosphate isomerase 1. This enzyme is involved in a critical energy-producing process known as glycolysis.
Aldolase is one of the nonregulated enzymes comprising the Calvin cycle and is predicted to have the potential to control photosynthetic carbon flux through the cycle.

In an experiment called Ash analysis the P cant material is strongly heated in the presence of oxygen. The residue contains oxides carbonates of about Ten elements.
Ashing is a gravimetric analysis, in which the final (ashed) weight is compared to the original weight of the sample.
The ash content of foods can then be expressed on either a wet weight (as is) or a dry weight basis.

Plasmodiophora brassicae causes the club root disease of crucifers can be controlled by Raising the pH of the soil.
Clubroot is a fungal disease that affects several plants in the cabbage family including cabbages, radish, mustard and ornamentals such as candytuft.
It is caused by the fungus Plasmodiophora brassicae and gets its name from the club-like roots it induces in infected plants.
Clubroot thrives in acidic soil, so raising the pH to at least 7.2 may be one of the most effective means of attaining clubroot control.

In the attack of Globodera class of nematodes, the presence of white to brown cysts projecting on the root surface is a characteristic symptom.
Globodera is a species of nematode in the family of Heteroderidae. It is well known as a plant pathogen, especially in potatoes and tomatoes.
the egg containing white cysts (pallida) or golden cysts (rostochiensis) can be found on the roots of potato plants.

Calcium is an immobile element among the given options.
The calcium ions do not move by mass flow but by a series of exchange reactions along negatively charged sites on the walls of the xylem vessels. Movement can be promoted by the presence of divalent cations and by the chelation of the calcium ion. There is considerable lateral leakage of calcium from the xylem.

In north India and central India, the black rust inoculum is caused from the South.
Stem rust, also known as cereal rust, black rust, red rust, or red dust, is caused by the fungus Puccinia graminis, which causes significant disease in cereal crops. Crop species that are affected by the disease include bread wheat, durum wheat, barley and triticale.
The annual recurrence of stem rust of wheat in North Indian plains was discovered by Prof. K. C. Mehta. The long-distance dissemination of stem rust from the southern foci to central India is reported to be associated with cyclonic rains.

Tetrad of megaspores is generally Linear.
Megaspores, also called macrospores, are a type of spore that is present in heterosporous plants.
The megaspore, or large spore, germinates into a female gametophyte, which produces egg cells. These are fertilized by sperm produced by the male gametophyte developing from the microspore.
During megasporogenesis, a diploid precursor cell, the megasporocyte or megaspore mother cell, undergoes meiosis to produce initially four haploid cells (the megaspores).
The linear tetrasporic pattern is characterized by cell plates failing to form after either meiosis 1 or 2, and results in one four-nucleate megaspore.