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Q.56 Which one of the following is the end product of dissimilatory sulfate reduction by sulfate reducing bacteria? (A) Hydrogen sulfide (B) Sulfur dioxide (C) Sulfur (D) Thiosulfate The end […]

Q.55 Which TWO of the following reactions are INCORRECT in relation to 𝐂𝟐 oxidative photosynthetic carbon cycle in land plants? P. 2 (Ribulose-1,5-biphosphate) +2(CO2) → 2 (phosphoglycolate) +2 (3-phosphoglycerate) +4H+ […]

Q.54 Choose the plant part, its use and the source species in CORRECT combination. Plant Part P. Bark Q. Leaf R. Capsule S. Stigma Use i. Insecticide ii. Food colorant […]

Q.53 Match the pathogen, disease caused and the affected plant in the CORRECT combination. Pathogen P. Blumeria graminis Q. Magnaporthe grisea R. Venturia inaequalis S. Cercospora personata Disease i. Blast […]

Q.52 Choose the CORRECT set of matches between group I and group II in relation to plant genetic transformation methods. GROUP I P. Helium Q. Acetosyringone R. Polyethylene glycol S. […]

Q.51 Identify the CORRECT matching between group I and group II in relation to ecology GROUP I P. The physical environment of an organism Q. The totality of the needs […]

Q.50 In a typical sexually reproducing angiospermic plant, if an endosperm cell contains 4.8 × 108 nucleotide pairs of DNA, then a microsporocyte of this plant will have ____ × […]

Q.49 In a hypothetical trihybrid cross of three loci (viz. A, B, C), all were inherited in a complete dominant manner over their recessive alleles 𝐚, 𝐛, 𝐜, respectively. When […]

Q.48 Two independent non-segregating recessive mutants ( 𝒎𝟏 and 𝒎𝟐 ) display similar defects in petal formation. When they were crossed with each other ( 𝒎𝟏 × 𝒎𝟐 ), all […]

Q.47 Two plant cells M and N are lying side by side making direct contact. “M” has osmotic potential (𝚿𝒔) of -10 bar and pressure potential ( 𝚿 p) of […]