Archives: Questions and Answers

Q.16 Determine the correctness or otherwise of the following Assertion [a] and the Reason [r]: Assertion [a]: The resolving power of a transmission electron microscope is higher than that of the light microscope. Reason [r]: The wavelength of electrons is shorter than that of visible light.

Q.15 Which one of the following immunoglobulins crosses the human placenta? (A) IgA (B) IgE (C) IgG (D) IgM

Q.14 Which one of the following hormones is a tyrosine derivative? (A) Epinephrine (B) Estradiol (C) Progesterone (D) Testosterone

Q.13 Which one of the following statements about polyploidy is correct? (A) Autopolyploids are derived from a single species (B) Autopolyploids are derived from two different species (C) Allopolyploids are derived from a single species (D) Allopolyploids are not fertile when mated with each other

Q.12 The correct hierarchy of taxa in the Linnaean classification of eukaryotes is (A) kingdom, class, phylum, order, family, genus (B) kingdom, order, class, phylum, family, genus (C) kingdom, phylum, order, family, class, genus (D) kingdom, phylum, class, order, family, genus

Q.11 Match the terminology in Group I with the stimulus in Group II that generates growth response of plants: Group I: P. Gravitropism Q. Phototropism R. Thigmotropism S. Chemotropism Group II: 1. Light 2. Touch 3. Chemical 4. Gravity

Q.10 The number of significant figures in a reported measurement of 0.00361 is (A) 3 (B) 4 (C) 5 (D) 6

Q.9 Which one of the following has a catalytic RNA? (A) Ribonuclease H (B) Ribozyme (C) RNA polymerase I (D) RNA polymerase II

Q.8 Which one of the following hormones promotes fruit ripening? (A) Abscisic acid (B) Auxin (C) Ethylene (D) Gibberellin

Q.7 Which color of light excites a natural GFP to emit green fluorescence? (A) Blue (B) Green (C) Infrared (D) Red