Plant Pathology - Study Mode

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[#96] FYM contains

(A) 0.5% N

(B) 0.2% N

(C) 1.5% N

(D) 1.2% N

Correct Answer

(A) 0.5% N

Explanation

Solution: FYM contains 0.5% N. Farmyard manure refers to the decomposed mixture of dung and urine of farm animals along with litter and leftover material from roughages or fodder fed to the cattle. On average well decomposed farmyard manure contains 0.5 percent N, 0.2 percent P 2 O 5 and 0.5 percent K 2 O.

[#97] The process by which excess energy is lost is

(A) Fluorescence

(B) Photooxidation

(C) Photolysis

(D) Photophosphorylation

Correct Answer

(A) Fluorescence

Explanation

Solution: The process by which excess energy is lost is Fluorescence. Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation. It is a form of luminescence. Fluorescence occurs when an excited molecule, atom, or nanostructure, relaxes to a lower energy state (usually the ground state) through the emission of a photon without a change in electron spin.

[#98] Select the wrong pair

Correct Answer

(D) Father of Plant Pathology : E. J. Butler
(H) Necrosis : death of plant
(L) Ergot of bajra : Erwinia carolovora
(P) Red rot of sugarcane : Colletotrichum gloeosporiodes

[#99] Wilt of pigeonpea is caused by

(A) Fusarium udum

(B) Gibberella indica

(C) Rhizopus nigricans

(D) Tilletia foetidia

Correct Answer

(A) Fusarium udum

Explanation

Solution: The Wilt of pigeonpea is caused by Fusarium udum. Fusarium wilt of pigeon pea is both a soil-borne and seed-borne disease in which the infection level of untreated seeds may range from 13% to 19%. The infected seeds thus serve as a primary vehicle for the spread of this disease over long distances and/or to newer areas. Fusarium wilt causes significant yield losses across the major pigeonpea production regions. Widespread and high diversity in F. udum hampers the breeding for pigeonpea wilt resistance.

[#100] Protein for protein synthesis was given by

(A) P. R. Fry

(B) H. F. Flor

(C) Vander Plank

(D) Hollings

Correct Answer

Explanation

Solution: Protein for protein synthesis was given by Vander Plank. James Edward Vanderplank, best known to plant pathologists globally simply as 'Vanderplank', is widely regarded as one of the world's most influential plant scientists. A typical plant cell synthesizes proteins in three distinct compartments: the cytosol, the plastids, and the mitochondria. Translation of mRNAs transcribed in the nucleus occurs in the cytosol.