Tag: dbt jrf pyq 2021

60. Which one of the following statements are TRUE for gibberellins? A. Gibberellins promote seed germination B. Gibberellins cannot stimulate leaf growth C. Gibberellins cannot stimulate stem growth D. Gibberellins […]

59. Which one of the following is a non-climacteric fruit? (a) Jackfruit (Artocarpusheterophyllus) (b) Tomato (Solanumlycopersicum) (c) Wild banana (Musa balbisiana) (d) Wild strawberry (Fragariavesca) Introduction Fruits are classified into […]

58. Seeds of Arabidopsis thaliana placed on Murashige and Skoog (MS) media without anyhormones germinates faster than in the medium that contains: (a) Abscisic acid (b) Auxin (c) Cytokinin (d) […]

56. The rice blast fungus Magnaporthegrisea, invades rice plants in a manner typical ofmany foliar pathogens by producing specialized infection structures called: (a) Appressoria (b) Infection tube (c) Mycota (d) […]

55. A plant species nearing its extinction due to viral infection has been chosen formicropropagation by tissue culture. Which explants will be the most appropriate toproduce virus-free plants? A. Shoot […]

54. When the critical night length in winters is disrupted by a pulse of red light followed bya pulse of far red light: (a) Both long-day and short day plants […]

53. E class homeotic genes in Arabidopsis thaliana are involved in the formation of: (a) Floral meristem (b) Petals and carpels (c) Sepals & petals (d) Shoot apical meristem Introduction […]

52. Which one of the following combinations signify similar function? (a) Cryptochrome and flurochrome (b) Cryptochrome and phytochrome (c) Cytochrome and cryptochrome (d) Fluorochrome and cytochrome Introduction Light is a […]

51. Which one of the following statements is NOT common between oxidativephosphorylation and photophosphorylation? (a) Generation of ATP (b) Involvement of a kinase (c) Involvement of electron transport (d) Involvement […]