Q25.The prokaryotic microorganism which fixes atmospheric nitrogen in symbiotic association under aerobic condition in aquatic ferns is- (A) Rhizobium(B) Klebsiella(C) Anabaena(D) Rhodospirillum The correct answer is (C) Anabaena. Anabaena azollae, a […]
Q24.The primary acceptor of CO₂ in C₄ plants is (A) Phosphoenolpyruvate(B) Ribulose 1, 4 diphosphate(C) Ribulose 1, 5 diphosphate(D) Phosphoenolglycerate The correct answer is (A) Phosphoenolpyruvate. In C₄ plants, PEP serves […]
Q23.The rate of oxygen production is enhanced when there is operation of (A) Cyclic photophosphorylation(B) Non-Cyclic photophosphorylation(C) Both Cyclic and Non-cyclic photophosphorylation(D) Oxidative phosphorylation The correct answer is (B) Non-Cyclic […]
Q22.Which one of the following phytochemicals produced in plants defend against herbivores? (A) Terpenes(B) Lignin(C) Flavonoids(D) Tannins The correct answer is (D) Tannins. Tannins are specialized phytochemicals that plants produce to […]
Q21.The gold standard method used for the detection of SARS-CoV-2 infection is (A) ELISA(B) RT-PCR(C) Microarray(D) FISH The correct answer is (B) RT-PCR. This remains the gold standard for detecting active […]
Q20.The method which was first developed for gene mapping in bacteria was (A) Transformation in 1928(B) Conjugation in 1946(C) Transduction in 1952(D) Transformation in 1944 The correct answer is (B) […]
Q19.Which of the following is NOT a characteristic feature of bony fishes? (A) Presence of paired fins(B) Laterally compressed body(C) Presence of homocercal tail(D) Presence of placoid scales Placoid scales […]
Q18.Which of the following animal has a pseudocoel? (A) Ascaris(B) Fasciola(C) Beroe(D) Sea anemone Ascaris has a pseudocoelom, making (A) the correct answer. A pseudocoelom is a fluid-filled body cavity […]
Q17.Which DNA repair system is affected in Lynch syndrome? (A) Nucleotide excision repair(B) Base excision repair(C) Mismatch repair(D) Repair of double strand breaks Lynch syndrome affects the mismatch repair (MMR) […]
Q16.In anaerobic conditions, yeast consumes more glucose than in the presence of aerobic environment. This phenomenon is known as- (A) Hatch and Slack effect(B) Emerson enhancement effect(C) Warburg effect(D) Pasteur […]
