Plant Pathology MCQ Question and Answer | Agriculture MCQ Question

The signaling compound involved in SAR is Jasmonic acid and Ethylene.
SAR requires the signal molecule salicylic acid (SA) and is associated with the accumulation of pathogenesis-related proteins, which are thought to contribute to resistance.
SA signaling confirmed the role of SA as an important signal in SAR. In addition, in transgenic tobacco and Arabidopsis plants, overproduction of SA enhanced the resistance to pathogens.

Anemophily occurs in Cononut. The spores that are pollinated by wind are very small and lightweight.
Anemophily or wind pollination is a form of pollination whereby pollen is distributed by wind.
the wind-pollination syndrome includes a lack of scent production, a lack of showy floral parts, reduced production of nectar, and the production of enormous numbers of pollen grains.
Anemophily is an adaptation that helps to separate the male and female reproductive systems of a single plant, reducing the effects of inbreeding.

Light energy is used in photosynthesis for the Activation of chlorophyll.
Chlorophyll is vital for photosynthesis, which allows plants to absorb energy from light.
Chlorophyll molecules are arranged in and around photosystems that are embedded in the thylakoid membranes of chloroplasts and the function of the vast majority of chlorophyll (up to several hundred molecules per photosystem) is to absorb light.
The function of the reaction centre of chlorophyll is to absorb light energy and transfer it to other parts of the photosystem. The absorbed energy of the photon is transferred to an electron in a process called charge separation.

PS I and PS II occur over the Grana of the chloroplast.
Photosystem I is an integral membrane protein complex that uses light energy to catalyze the transfer of electrons across the thylakoid membrane from plastocyanin to ferredoxin. It is an integral membrane protein complex that uses light energy to catalyze the transfer of electrons across the thylakoid membrane grana from plastocyanin to ferredoxin.
Photosystem II is the first protein complex in the light-dependent reactions of oxygenic photosynthesis. It is located in the thylakoid membrane grana of plants, algae, and cyanobacteria.

Water supply in plants is due to the Cohesion force.
Cohesion is the intermolecular attractive force acting between two adjacent portions of a substance, particularly of a solid or liquid.
Cohesive is important for the transport of water from the roots to the leaves in plants.

Crozier formation is associated with Ascomycetes.
A crozier is an anatomical feature of many fungi in the phylum Ascomycota that forms at the base of asci and looks like a hook-topped shepherd's staff or stylized religious crosier. Croziers resemble and function similarly to clamp connections on the dikaryotic hyphae of Basidiomycota.

Sugarcane shows the high efficiency of CO₂ fixation because it performs Hatch and Slack pathways.
C₄ plants including maize, sugarcane, and sorghum avoid photorespiration by using another enzyme called PEP during the first step of carbon fixation.
This step takes place in the mesophyll cells that are located close to the stomata where carbon dioxide and oxygen enter the plant.

Father of microbiology Louis Pasteur.
Louis Pasteur was a French chemist and microbiologist renowned for his discoveries of the principles of vaccination, microbial fermentation and pasteurization.
He was the first to demonstrate that infectious diseases are caused by microbes, disproved the concept of spontaneous generation, developed the process of pasteurization, and developed some of the world's first vaccines.

Bone meal is well suited for Acidic soil.
Bone meal is a mixture of finely and coarsely ground animal bones and slaughter-house waste products. It is used as a dietary supplement to supply calcium (Ca) and phosphorus (P) to monogastric livestock in the form of hydroxiapathite.
Bone meal fertilizer only works in acidic soil. It's best to only consider this compound if your soil's pH is 7.0 or below.

The 8-nucleate embryo sac is Monosporic, Bisporic and Tetrasporic.
In flowering plants, double fertilization occurs, which involves two sperm fertilizing the two gametes inside the megagametophyte (the egg cell and the central cell) to produce the embryo and the endosperm.
Bisporic embryo sacs contain nuclei derived from two members of a megaspore tetrad whereas tetrasporic embryo sacs contain nuclei derived from all four members of a tetrad.