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66. Which one of the following options related to plant growth and development is matched correctly? (1) LEAFY: regulator of genomic imprinting (2) Xylogenesis: wood formation (3) FLOWERING LOCUS T […]

65. AP1 (APETLA 1) is one of the floral meristem identifying genes. In wild type Arabidopsis thaliana plants transformed with AP1:GUS, β glucuronidase (GUS) activity is seen in floral meristem, […]

Flowers represent a complex array of functionally specialized structures that differ substantially from the vegetative plant body in form and cell types. Following are statements made regarding floral meristems. A. […]

63. Which one of the following statements about LEAFY (LFY), a regulatory gene in Arabidopsis thaliana, is correct? (1) LEAFY (LFY) is involved in floral meristem identity (2) LEAFY (LFY) […]

The control of flowering is a complex process involving several key regulatory genes. Some statements on flower development are given below: A. Two major types of genes regulate floral development: […]

According to the ABC model of floral development in Arabidopsis as shown below Several genes/transcription factors e.g. AP 1, AP2, AP3, AG etc., are involved. Which one of the following […]

60. Which one of the following plant homeotic genes does NOT encode MADS- domain transcription factor involved in floral organ specification? (1) AP2                                                         (2) AP1 (3) AP3/P1                                                     (4) AG   […]

Individual and overlapping expression of homoerotic genes in adjacent whorls of a flower determine the pattern of floral organ development. In an Arabidopsis mutant, floral organs are distributed as follows: […]

58. Following are certain statements regarding the activities of homeotic genes of classes A, B and C involved in floral organ identity: A. Activity of A alone specifies sepals B. […]

Based on ABC model during flower development, loss of class A activity results in the formation of only stamen and carpel. Which of the following floral organ identity genes controls […]