GPAT -2011-questions & answers

Q.1      Quinoline alkaloids are biosynthesized via which one of the following pathways?
(A)   Shikimic acid - tyrosine     B)   Shikimic acid - tryptophan
(C)   Shikimic acid - cathinone    D)   Shikimic acid - phenylalanine

Q.2      Khellin is an active constituent of which one of the following plants?
(A)   Prunus serona    B)   Tribulus terrestis
(C)   Ammi visnaga    D)   Vanilla planifolia

Q.3      Which one of the following compounds is useful for the stimulation of cell division and release of lateral bud dormancy?
(A)   Zeatin 
(B)   2,4-Dichlorophenoxyacetic acid
(C)   Indoleacetic acid 
(D)    Picloram

Q.4      A powdered drug has the following microscopic characters:
Anther cells, arenchyma, pollen grains, phloem fibers, volatile oil cells and stone cells. The powder is obtained from which of the followings?
(A)   Clove bud powder    (B)   Clove bud powder with stalk
(C)   Mother Clove            (D)   None of the above

Q.5      Which of the following ergot alkaloids is water soluble and shows blue fluorescence?
(A)   Ergosine    (B)   Ergotamine    (C)   Ergocristine      (D)   Ergometrine

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