Plant Pathology MCQ Question and Answer | Agriculture MCQ Question

Pyruvic acid, the last product of glycolysis, is degraded to CO₂ and H₂ in the Matrix of mitochondria.
Glycolysis is a cytoplasmic pathway that breaks down glucose into two three-carbon compounds and generates energy.
The final step of glycolysis is catalyzed by pyruvate kinase to form pyruvate and another ATP. During fasting, glucagon activates protein kinase A which phosphorylates pyruvate kinase to inhibit it.

Nuclear polyhedrosis virus (NPV) is the most effective for the control of Helicoverpa armigera.
NPV is the preferred product for Helicoverpa management, not only because it is effective but because it preserves the full range of beneficial insects in the crop.
The nuclear polyhedrosis virus (NPV), part of the family of baculoviruses, is a virus affecting insects, predominantly moths and butterflies. It has been used as a pesticide.

The synthesis of ADP + Pi ⟶ ATP in grana photosynthesis is Photophosphorylation.
In the process of photosynthesis, the phosphorylation of ADP to form ATP using the energy of sunlight is called photophosphorylation.
In photophosphorylation, light energy is used to pump protons across a biological membrane, mediated by the flow of electrons through an electron transport chain.
This stores energy in a proton gradient. As the protons flow back through an enzyme called ATP synthase, ATP is generated from ADP and inorganic phosphate.

ADP + Inorganic phosphate ATP is photophosphorylation.
In photophosphorylation, light energy is used to pump protons across a biological membrane, mediated by the flow of electrons through an electron transport chain. This stores energy in a proton gradient.
As the protons flow back through an enzyme called ATP synthase, ATP is generated from ADP and inorganic phosphate.

Saccharomyces is a unicellular fungus.
Saccharomyces is a genus of fungi that includes many species of yeasts. They are unicellular and saprotrophic fungi.
Saccharomyces cerevisiae, also known as baker's yeast, is a unicellular fungus that is used to make bread and other wheat-based products.

The maximum amount of energy/ATP is liberated on oxidation of Fats.
Fatty acid oxidation is the mitochondrial aerobic process of breaking down a fatty acid into acetyl-CoA units.
The end products of fatty acid oxidation include acetyl-CoA, FADH₂, NADH, water and one acyl-CoA chain that is two carbons shorter. The acetyl-CoA enters the Krebs or citric acid cycle with FADH₂ and NADH to yield ATP (adenosine triphosphate), which is used for energy.

The application of potash increases disease resistance in plants.
Potash increases disease resistance, drought tolerance, and plumpness of grain and seed, and improves stem rigidity and cold hardiness. The application of potash enhances the firmness, texture, flavor, size, and color of fruit crops, and increases the oil content of oil crops.

Cryoprotectants should be added to spores before storing them in liquid nitrogen.
A cryoprotectant is a substance used to protect biological tissue from freezing damage.
Cryoprotectants are also used to preserve living materials in the study of biology and to preserve food products.
For years, glycerol has been used in cryobiology as a cryoprotectant for blood cells and bull sperm, allowing storage in liquid nitrogen at temperatures around -196°C.

A complex mixture of brown or dark brown amorphous and colloidal substances modified from the original tissues or synthesized by various soil organisms is referred to as Humus.
Humus is a complex rather resistant mixture of brown or dark brown, amorphous and colloidal substances modified from the original tissues or synthesized by the various soil organisms.
It is a colloidal substance and increases the cation-exchange capacity of the soil, hence its ability to store nutrients by chelation. While these nutrient cations are available to plants, they are held in the soil and prevented from being leached by rain or irrigation.

Plants deficient in zinc, show reduced biosynthesis of the growth hormone Auxin.
Plants also require zinc for the synthesis of tryptophan, a key amino acid in the synthesis of the auxin indoleacetic acid. Therefore, zinc also operates in the control of plant development through its indirect action on auxins.