Author: admin

Q.51 Which of the following summarizes the role of Casparian strip in transport of water in the root? (A) Symplast to Apoplast (B) Apoplast to Symplast (C) Phloem to Xylem […]

Q.50 The uptake of nitrogen (N) and phosphorus (P) by plant roots often involves interaction between root and some symbiotic organisms. Which of the following associations is most commonly found […]

Q.49 4′,6 diamidino 2-phenylindole (DAPI) is a fluorescent dye used to stain the nucleus. Which of the following plant cells, when mature, cannot be stained by DAPI? (A) Trichomes (B) […]

Q.48 Which of the following is the closest ancestor of all land plants? (A) Blue green algae (B) Red algae (C) Chara (D) Coleochaeteae The correct answer is: (D) Coleochaeteae. In […]

Q.47 Which of the following does NOT use xylem to transport water? (A) Miscanthus (B) Marchantia (C) Selaginella (D) Magnolia The correct answer is: (B) Marchantia. Marchantia is a non‑vascular bryophyte […]

Q.46 Which of the following is most abundant in the aleurone layer of wheat seeds? (A) Tannin (B) Starch (C) Protein (D) Lipid The correct answer is: (C) Protein. The aleurone layer […]

Q.45 The sequence of a polypeptide that forms a transmembrane helix is shown below. Which one of the following segments of the peptide is most likely to span the membrane? […]

Q.44 An N-terminal His-tagged protein of molecular weight 40 kDa was purified using Ni-NTA column. This protein sample was subjected to SDS-PAGE. A western blot of the same using anti-His […]

Q.43 A polypeptide with the amino acid sequence ‘AGKPDHEKAHL’ was dissolved in a buffer of pH 1.8. The predominant form of the polypeptide will have a net charge of (A) […]

Q.42 Kinetic parameters for the enzyme fumarase with three different substrates are given below. Substrate                                […]