Important question

36. F1 generation means

(A)

first flowering generation

(B)

first fertile generation

(C)

first filial generation

(D)

first seed generation

37. Filial means

(A)

offsprings produced in sexual reproduction

(B)

offsprings produced in asexual reproduction

(C)

offsprings produced in vegetative reproduction

(D)

both (B) and (C)

38. F2 generation is produced by

(A)

crossing F1 progeny with one of the parents

(B)

selfing the heterozygous progeny

(C)

selfing the parents

(D)

a cross between recessive parents

39. In genetics, the use of checkerboard was done by

(A)

Mendel (B) Correns

(C)

Punnet (D) Darwin

40. Mendel, in his experiments

(A)

maintained qualitative records

(B)

maintained quantitative records

(C)

conducted ample crosses and reciprocal crosses

(D)

all of the above

41. To eliminate chance factor, Mendel performed

(A)

monohybrid cross

(B)

dihybrid cross

(C)

reciprocal cross

(D)

trihybrid cross

42. Mendel always started his experiment (Monohybrid and Dihybrid cross) with

(A)

any pea plant

(B)

a heterozygous plant

(C)

a pure line plant

(D)

a fresh new plant

43. Mendel carried out artificial cross by

(A)

emasculation of selected female parent plant

(B)

emasculation of selected male parent plant

(C)

dusting of pollen grains from selected male plant over selected female plant

(D)

both (A) and (C)

44. Emasculation means

(A)

removal of stamens before anthesis

(B)

removal of stigma before anthesis

(C)

removal of petals before anthesis

(D)

removal of sepals before anthesis

45. In pea flower, how many stamens are free and how many are fused?

(A)

1, 9 (B) 2, 8

(C)

5, 5 (D) 4, 6

46. F3 generation was obtained by

(A)

selfing F1 hybrids

(B)

selfing F2 hybrids

(C)

crossing F1 with either of parent

(D)

none of these

47. What result did Mendel obtained after monohybrid cross between tall and dwarf pea plant?

(A)

All new plants were dwarf

(B)

All new plants were tall

(C)

50% plants were dwarf and 50% plants were tall

(D)

75% plants were tall and 25% plants were dwarf

48. When Mendel allowed natural selfing of F1 hybrids during monohybrid cross between pure tall and pure dwarf pea plant, he found

(A)

all plants were tall

(B)

all plants were dwarf

(C)

dwarfness reappeared in some plants

(D)

tallness reappeared in some plants

49. When Mendel selfed F1 generation, he obtained 1064 seeds in F2 generation out of 1064 seeds, _______ were tall and ______ were dwarf.

(A)

882, 299 (B) 787, 277

(C)

787, 277 (D) 651, 207

50. During monohybrid cross experiments, Mendel performed reciprocal cross by selecting

(A)

tall plant as male and dwarf plant as female

(B)

tall plant as female and dwarf plant as male

(C)

both male and female plant as tall

(D)

both male and female plant as dwarf

51. After performing reciprocal cross between tall and dwarf plants, the ratio of tall and dwarf plants obtained was

(A)

1:2 (B) 3:1

(C)

1:3 (D) 2:1