Plant Pathology - Study Mode
[#111] The anterior flagella present in the protozoans is known as
Correct Answer
(B) Tinsel
Explanation
Solution: The anterior flagella present in the protozoans are known as Tinsel. Tinsel is a type of flagella that bears hair-like projections on its surface. The tinsel flagellum has two rows of tripartite tubular hairs known as mastigonemes, which are composed of glycoproteins. A transitional helix is usually present between the shaft of the flagellum and the basal body.
[#112] Father of Indian Mycology
Correct Answer
(A) E. J. Butler
Explanation
Solution: The Father of Indian Mycology is E. J. Butler. 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. During his twenty years in India, he began large-scale surveys on fungi and plant pathology and published the landmark book Fungi and Disease in Plants: An Introduction to the Diseases of Field and Plantation Crops, especially those of India and the East (1918) and has been called the Father of Mycology and Plant Pathology in India.
[#113] Nitrogen is not a constituent of
Correct Answer
(D) Idioblast
Explanation
Solution: Nitrogen is not a constituent of the Idioblast. An idioblast is an isolated plant cell that differs from neighboring tissues. They have various functions such as storage of reserves, excretory materials, pigments and minerals. There are a variety of crystal types and shapes that can be stored within an idioblast. The most common substance for crystals is calcium oxalate, a common product of calcium abundance in plants.
[#114] Which of the disease(s) induce floral abnormalities
Correct Answer
(D) Both B and C
Explanation
Solution: Green ear of bajra and White rust of crucifers of the diseases induce floral abnormalities. One of the most important diseases of pearl millet is downy mildew, also known as green ear, caused by the fungus Sclerospora graminicola (Sacc.) J. Schrot destroys much of the crop every year. The resting spores of the fungus in the soil constitute the primary source of inoculum. The blisters contain white powdery spores which are spread by the wind when released. The stem and leaves of attacked crops can become twisted and deformed. White rust disease also infects the floral parts.
[#115] C 4 -cycle was discovered by
Correct Answer
(A) Hatch and Slack
Explanation
Solution: C 4 -cycle was discovered by Hatch and Slack. C 4 carbon fixation also known as the Hatch-Slack pathway is one of three known photosynthetic processes of carbon fixation in plants. It owes the names to the 1960's discovery by Marshall Davidson Hatch and Charles Roger Slack that some plants when supplied with 14 CO 2 , incorporate the 14 C label into four-carbon molecules first. C 4 photosynthesis reduces photorespiration by concentrating CO 2 around RuBisCO. To ensure that RuBisCO works in an environment where there is a lot of carbon dioxide and very little oxygen, C 4 leaves generally differentiate into two partially isolated compartments called mesophyll cells and bundle-sheath cells.