Genetics And Plant Breeding MCQ Question and Answer | Agriculture MCQ Question

Two taxonomic species are distinguished from each other by their failure to interbreed.
Interbreed is the act of mixing different species or varieties of animals or plants and thus producing hybrids.
An ancestral species is split into two or more descendant species that are genetically different from one another and can no longer interbreed.

The distribution of stomata per unit area of a leaf and their size affects the rate of Transpiration.
Transpiration is a process that involves the loss of water vapour through the stomata of plants. The loss of water vapour from the plant cools the plant down when the weather is very hot, and water from the stem and roots moves upwards or is 'pulled' into the leaves.
Transpiration is closely related to stomata. Nearly 97% of the water from plants is lost through stomatal transpiration, so the more stomata, the higher the transpiration rate.

Cellulose is absent in the Middle lamella.
The middle lamella serves as a cementing layer between the primary walls of adjacent cells. The middle lamella is made up of calcium and magnesium pectate. There is no cellulose in the middle lamella layer.
The primary wall is the cellulose-containing layer laid down by cells that are dividing and growing.

The spraying of leaves with silicon emulsion causes decreased transpiration.
Silicone emulsions are insoluble. Emulsions allow for products that can be used to moisturize, nourish and protect the skin and also can be used to deliver active ingredients or other components.
Thus, it causes a decrease in the rate of transpiration.

The water from the soil enters into root hairs on account of Suction pressure.
Suction pressure is also called Diffusion Pressure Deficit. If some solute is dissolved in a solvent, its diffusion pressure decreases.
It is DPD that tends to equate and represent the water-absorbing ability of a cell, it is also called suction force (SF) or suction pressure (SP). The actual pressure with which a cell absorbs water is called "suction pressure".

IPGRI headquarter is situated in Rome, Italy.
In October 1993, IBPGR became the International Plant Genetic Resources Institute (IPGRI) and in 1994 IPGRI began independent operation as one of the centers of the CGIAR. Its headquarters are in Rome's Maccarese borough, Italy.
It is a global research-for-development organization that delivers scientific evidence, management practices, and policy options to use and safeguard agricultural biodiversity.

The smallest unit of genetic material that undergoes recombination is Recon.
Recon is a term coined by Seymour Benzer for the smallest recombinable unit within a cistron.
A region of a gene within which there can be no crossing-over; is now known to be a single nucleotide pair.

Turmeric is a modified stem Rhizome.
Turmeric is a perennial herbaceous plant that reaches up to 1 m (3 ft 3 in) tall. It has highly branched, yellow to orange, cylindrical, aromatic rhizomes.
The leaves are alternate and arranged in two rows. They are divided into leaf sheath, petiole, and leaf blade. From the leaf sheaths, a false stem is formed. This false stem is also termed a modified stem.

The major transportable form of amino acid is Aspargine.
Asparagine is one of the important amino acids for the long-distance transport of nitrogen (N) in plants.
Asparagine is α-amino acid that is used in the biosynthesis of proteins. It contains an α-amino group, an α-carboxylic acid group, and a side chain carboxamide, classifying it as a polar, aliphatic amino acid.
It is non-essential in humans, meaning the body can synthesize it. It is encoded by the codons AAU and AAC.

The reason behind reversion is Mutation.
Reversions are genetic alterations that reverse the effect of mutations. Some revertants are due to compensatory changes in genes different from the ones with the original mutation.
Reversion occurs when the effects of one mutation are counteracted by a second mutation. It refers specifically to phenotype.