Plant Pathology - Study Mode
[#681] Fusion of vegetative hyphae is known as
Correct Answer
(B) Anastomosis
Explanation
Solution: The fusion of vegetative hyphae is known as Anastomosis. An anastomosis is a connection or opening between two things that are normally diverging or branching. In mycology, anastomosis is the fusion between branches of the same or different hyphae. Hence the bifurcating fungal hyphae can form true reticulating networks. Hyphal anastomoses represent key structures for the formation of efficient and interconnected AMF mycorrhizal networks, which are fundamental to AMF survival, plant/soil nutrient flow, and the maintenance of genetic diversity.
[#682] Which of the following herbicides are applied to the soil at the time of seeding?
Correct Answer
(B) Residual herbicide
Explanation
Solution: Residual herbicide is the herbicides that are applied to the soil at the time of seeding. A residual herbicide, also known as a long-lasting weed killer, is a type of herbicide that gives longer-lasting weed control of germinating. Herbicides, also commonly known as weedkillers, are substances used to control undesired plants, also known as weeds.
[#683] Ozone is toxic to expanding leaves of almost all types of plant at the concentration of equal or more than
Correct Answer
(A) 0.1 ppm
Explanation
Solution: Ozone is toxic to expanding leaves of almost all types of plant at the concentration equal to or more than 0.1 ppm. Ozone damages plants by entering leaf openings called stomata and oxidizing plant tissue during respiration. Ozone causes considerable damage to plants around the world, including crops and plants in natural ecosystems. Ozone damages plants by entering leaf openings called stomata and oxidizing plant tissue during respiration. This damages the plant leaves and causes reduced survival.
[#684] Boron assists in
Correct Answer
(A) Sugar transport
Explanation
Solution: Boron assists in Sugar transport. Boron (B) is important in plants because it facilitates the transport of sugars through cell membranes. It is also essential for cell wall synthesis and cell division, impacting both quality and yield. Low B levels weaken the structure of pectin, a fiber needed to help the plant remain physically stable.
[#685] A virus that infects bacteria and destroys them is called as
Correct Answer
(B) Bacteriophase
Explanation
Solution: A virus that infects bacteria and destroys them is called Bacteriophase. A bacteriophage, also known informally as a phage is a duplodnaviria virus that infects and replicates within bacteria and archaea. The term was derived from "bacteria" and the, meaning "to devour". A bacteriophage is a type of virus that infects bacteria. The word "bacteriophage" literally means "bacteria eater," because bacteriophages destroy their host cells. All bacteriophages are composed of a nucleic acid molecule that is surrounded by a protein structure.