Plant Pathology - Study Mode
[#441] Phytotron is meant for
Correct Answer
(C) Growing plants under controlled environment
Explanation
Solution: Phytotron is meant for Growing plants in a controlled environment. A phytotron is an enclosed research greenhouse used for studying interactions between plants and the environment. It was a product of the disciplines of plant physiology and botany. The first phytotron was built under the direction of Frits Warmolt Went to the California Institute of Technology in 1949. It was funded by the Harry B. Earhart Foundation and was officially known as the Earhart Plant Research Laboratory.
[#442] The most important nutrient for oil production is
Correct Answer
(B) S
Explanation
Solution: The most important nutrient for oil production is Sulphur. Sulphur plays an important role in the formation of plant proteins, amino acids, some vitamins and enzymes, photosynthesis, energy metabolism, carbohydrate production, and synthesis of protein. The plants fed with sufficient sulphur in turn increase the yield and oil content of the seeds.
[#443] The optimum temperature for incidence of BLB is
Correct Answer
(C) 22° - 26°C
Explanation
Solution: The optimum temperature for the incidence of BLB is 22° - 26°C. Bacterial leaf blight (BLB) develops on the upper leaves of wheat during periods of cool, wet weather, after the plants have reached the boot stage. Leaf blight disease is caused by the fungus Helminthosporium turcicum Pass. Leaf blight is associated with high relative humidity, wet weather, and cool spring temperatures.
[#444] Who is the 1 st director of Imperial Bureau of Mycology in 1921?
Correct Answer
(C) E. J. Butler
Explanation
Solution: J. Butler is the 1 st director of the Imperial Bureau of Mycology in 1921. Sir Edwin John Butler was an Irish mycologist and plant pathologist. He became the Imperial Mycologist in India and later the first director of the Imperial Bureau of Mycology in England. He was knighted in 1939. He has been called the Father of Mycology and Plant Pathology in India.
[#445] First reaction in photosynthesis is
Correct Answer
(B) Excitation of chlorophyll molecules
Explanation
Solution: The first reaction in photosynthesis is the Excitation of chlorophyll molecules. When energy from light is absorbed by proteins called reaction centers that contain green chlorophyll (and other colored) pigments/chromophores. In plants, these proteins are held inside organelles called chloroplasts. In these light-dependent reactions, some energy is used to strip electrons from suitable substances, such as water, producing oxygen gas.