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Q.55 In wild-type Arabidopsis thaliana, the four types of floral organs (sepal, petal, stamen, carpel) are arranged in concentric whorls from outside to inside. With reference to the ABC model […]

Q.54 In Calvin–Benson cycle, to produce 1 molecule of glyceraldehyde 3–phosphate byfixing 3 molecules of carbon dioxide, 9 molecules of ATP and ________ molecules(in integer) of NADPH are typically utilized. […]

Q.53 Which of the following statements is/are CORRECT with reference to rubberproduction from plants?(A) Para rubber is produced from Hevea brasiliensis(B) India rubber is produced from Ficus elastica(C) Panama rubber […]

Q.52 Which of the following selectable marker genes is/are used for herbicide toleranceduring genetic transformation of plants?(A) hpt(B) bar(C) nptII(D) pmi The bar gene encodes phosphinothricin acetyltransferase (PAT), which detoxifies […]

Q.51 Which of the following plant diseases is/are caused by nematode?(A) Cereal cyst of barley(B) Ergot of rye(C) Wart of potato(D) Ear–cockle of wheat Correct Answer: (A) and (D) Cereal […]

Q.50 Which of the following plant natural products is/are cyanogenic glycoside(s)?(A) Linustatin(B) Limonene(C) Luteolin(D) Linamarin Linustatin and linamarin qualify as cyanogenic glycosides, while limonene and luteolin belong to different classes […]

Q.49 Which of the following tissue types is/are established during embryogenesis inwild–type Arabidopsis thaliana?(A) Shoot apical meristem(B) Rosette leaf primordium(C) Procambium(D) Lateral root primordium Shoot apical meristem (SAM) and procambium […]

Q.48 The collateral and open type of vascular bundle with endarch xylem strand isusually found in(A) monocot stem(B) dicot stem(C) monocot root(D) dicot root The correct answer is (B) dicot […]

Q.47 Which one of the following plant families does apple (Malus domestica) belong to?(A) Rosaceae(B) Rutaceae(C) Rubiaceae(D) Ranunculaceae Apple (Malus domestica) belongs to the Rosaceae family. This deciduous tree produces […]

Q.46 The spectrum of a protein obtained using electrospray ionization massspectrometry (ESI–MS) is shown below. Two peaks, one at m/z = 2960.6 and theother at m/z = 3552.5, are marked. […]