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The development of anthers and male gametophytes is highly conserved among angiosperms. Following are some of the events associated with pollen development, in random order. (a) Microsporogenesis in pollen sac […]

Which of the following statement is WRONG? (1) Megasporocyte develops within the megasporangium of the ovule (2) Megasporocyte undergoes meiosis to produce four haploid megaspores (3) All the four megaspore […]

Which one of the following statements regarding double fertilization in plants is correct? (1) The same sperm cell fuses with both egg cell and central cell. (2) Two sperm cells […]

Sperm cell behaviour during double fertilization in Arabidopsis can be stated as follows. Identify the INCORRECT statement: (1) Pollen tube bursts and discharges sperm cells. (2) Pollen cells produce pollen […]

During reproductive development in plants: (A) male and female gametes are produced as a result of two mitotic divisions after meiosis (B) vegetative cells in pollen contribute to pollen development […]

During double fertilization in plants, one sperm fuses with the egg cell and the other sperm fuses with (1) synergid cell (2) central cell (3) antipodal cell (4) nucellar cell […]

10. In Arabidoposis gene responsible for formation shoot meristem is (1) Leafy                                                       (2) Agamous (3) Clavata                                                    (4) Wus   Introduction Shoot meristem formation is critical for plant growth and organogenesis. […]

Which one of the following transcription factors is important for delimiting the meristematic and elongation zones of roots? (1) SCARECROW (SCR) (2) SHORT ROOTS (SHR) (3) PLETHORA (PLOT) (4) SPEECHLESS […]