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Q.58 Microbes that have their optimal growth rate near 𝟏𝟓∘𝐂 but can still grow at 𝟎∘𝐂 to 𝟐𝟎∘𝐂 are known as (A) mesophiles (B) psychrotrophs (C) psychrotolerant (D) psychrophiles Microbes […]

Q.57 Which one of the following is the terminal electron acceptor in the given metabolic reaction catalyzed by methanogens? 𝟒𝐇𝟐 + 𝐂𝐎𝟐 ⟶ 𝐂𝐇𝟒 + 𝟐𝐇𝟐𝐎 (A) H2 (B) CO2 […]

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 […]