Category: CSIR NET Life Science Previous Year Questions and Solution Plant Physiology

Given below are various plant natural product and their basic structural unit: List I                      List II Natural Product        Basic Unit A. Phenolics         I. Five-carbon isoprene unit B. Alkaloids         II.Glucose unit […]

36. Artemisinin and Dhurrin belongs to respective groups of the plant natural compounds (1) Alkaloids and Terpenes (2) Flavonoids and Alkaloids (3) Cynogenic glycosides and Flavonoids (4) Terpenes and Cynogenic […]

35. Which of the following is a plant secondary metabolite? (1)  Kaurenoic acid (2) Abietic acid (3) Proline (4) Pyruvate Correct answer: (1) Kaurenoic acid Explanation: Kaurenoic acid is a diterpenoid, […]

Which one of the following secondary metabolites is characterized by the presence of a central carbon atom that is bound by a sulphur to a glycone group, and N by […]

33.Which of the following class of plant secondary metabolite is present specially in the order Brassicales? (1) Glucosinolates      (2) Alkaloids (3) Phenolics             (4) Terpenoids Correct answer: (1) Glucosinolates Explanation: Glucosinolates are […]

32. Which one of the following compound is NOT a part of alkaloid class of secondary metabolites? (1) Lignin (2) lndole (3)Tropane (4) Pyrroidine Correct answer: (1) Lignin Lignin is a […]

β-thioglucosidases, also known as myrosinases, are the enzymes that are known to hydrolyse which one of the following plant natural products? (1) Glucosinolates (2) Terpenoids (3) Alkaloids (4) Phenolics Correct […]

Given below are some statements on secondary metabolites in plants. A. Glucosinolates are synthesized by elongation in the length of side chains of their precursor amino acids B. All terpenes […]

Phenyl ammonia Aase (PAL) and chalcone synthase (CHS) involved in biosynthesis of phenolic compound in plants. Following are some statements regarding the action of PAL and CHS: A. Substrate for […]

Given below are the list of plant derived alkaloids and their uses in modern medicine. Alkaloids                     Uses A. Caffeine      […]