12th Biology Question Bank (2009-17)

(a) Both the statements are true and statement II is the correct explanation of statements I.

(b) Both the statements are true, but statementsII is not the correct explanation of statements I

(c) statements I is true, but statements II is false.

(d) statement I is false, but statement II is true.

(a) 21

(b) 23

(c) 44

(d) 46

(a) Cotton

(b) Mango

(c) Tea

(d) Wheat

RNA polymerase I

RNA polymerase II

RNA polymerase III

(d) None of these

(a) lens

(b) Retina

(c) Cornea

(d) choroid

(a) n

(b) 2n

(c) 3n

(d) Both (a) and (b)

(a) Liquid nitrogen

(b) PEG

(c) Lactic acid

(d) All of these

(a) Bacteria

(b) Oncogenes

(c) Both (a) & (b)

(d) None of these

Law of Dominance

(b) Law of independent assortment

(c) Law of purity of gametes

(d) None of these

(a) Cultivation of tree 🌳

(b) Protecting trees 🌳 from felling down by human beings

(c) Giving up tobacco

(d) All of these