Plant Pathology MCQ Question and Answer | Agriculture MCQ Question

Individuals of a clone have the same genome.
Clones contain identical sets of genetic material in the nucleus, the compartment that contains the chromosomes of every cell in their bodies.
Thus, cells from two clones have the same DNA and the same genes in their nuclei.

Basidiospores are Sexual spores.
A basidiospore is a reproductive spore produced by Basidiomycete fungi, a grouping that includes mushrooms, shelf fungi, rusts and smuts.
Basidiospores typically each contain one haploid nucleus that is the product of meiosis, and they are produced by specialized fungal cells called basidia.
These are typically single-celled (without septa), and typically range from spherical to oval to oblong, to ellipsoid or cylindrical.

In complex 12-36-16 each granule has all three nutrients.
In complex 12-32-16 each granule has all three nutrients i.e. Nitrogen, Phosphorus and Potassium.
NPK 12-32-16 fixes the phosphorus and potassium content in the soil and is highly effective in soils with leaching conditions. It should be applied during sowing and through broadcasting. The dosage should be as per the crop and the soil.

In angiosperms the number of meiotic divisions required to produce 100 microspores is 25.
Male gametes are formed by the process of microsporogenesis, and in this, 1 cycle leads to the formation of 4 pollen grains.
For 100 microspores, $$\frac{{100}}{4}$$ = 25 cycles of meiosis will be done.

Photosystem has main light harvesting pigments, Chlorophyll a-660, chI. a-670, chI. a-680, chI. a-690, chI. a-700.
Chlorophyll a is a specific form of chlorophyll used in oxygenic photosynthesis. It absorbs most energy from wavelengths of violet-blue and orange-red light, and it is a poor absorber of green and near-green portions of the spectrum.
Chlorophyll a also transfers resonance energy in the antenna complex, ending in the reaction center where specific chlorophylls P680 and P700 are located.

Gram negative bacteria are included under Gracilicutes.
It is a gram-negative clade that branched off from other bacteria just before the evolutionary loss of the outer membrane or capsule, and just after the evolution of flagella.
The gram-negative bacteria include the model organism Escherichia coli, as well as many pathogenic bacteria, such as Pseudomonas aeruginosa, Chlamydia trachomatis, and Yersinia pestis.

Stem cuttings are commonly used in propagation of Rose.
Roses can be grown successfully from cuttings and will grow to make good flowering plants.
Cut a section of the stem between 6 and 8 inches long, and remove the withered flower. Remove all the leaves or remove all but the top leaves, then replant them. The stem will then begin to root and will establish itself as a new plant.

The enzyme that catalyzes carbon dioxide fixation in C₄ plants is PEP carboxylase.
PEP carboxylase, which is located in the mesophyll cells, is an essential enzyme in C₄ plants.
In hot and dry environments, carbon dioxide concentrations inside the leaf fall when the plant closes or partially closes its stomata to reduce water loss from the leaves.

Ammonium sulphate contains 20.6% N.
Ammonium sulfate ((NH₄)₂SO₄) is an inorganic salt with several commercial uses. The most common use is as a soil fertilizer since the chemical contains 21% (w/w) nitrogen and 24% (w/w) sulfur.

The false smut of sugarcane can be controlled by adopting avoid the practice of ratooning, Disinfection of setts before planting, and Removal of smutted whips from the field.
Sugarcane smut is a fungal disease of sugarcane caused by the fungus Sporisorium scitamineum. The disease is known as culmicolous, which describes the outgrowth of fungus on the stalk of the cane.
The management of sugarcane smut is done through the use of resistant cultivars, fungicide, and using disease free planting stock. Control is mainly accomplished through the use of resistant cultivars in areas where the disease is present. Fungicides also are used in the control of this disease, but typically resistant cultivars are preferred due to the cost of fungicides.