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Identify the structures marked $A$ to $F$ in the given diagram
$A-Asymmetric nucleus, \;B-Nucleus, \;C-Generative cell, \;DVegetative cell, \;E-Pollen, \;F-Pollen tetrad$
$A- Pollen tetrad,\; B- Pollen, \;C-Generative cell, \;D-Vegetative cell, \;E-Asymmetric spindle, \;F-Nucleus$
$A-Pollen tetrad, \;B-Vacuole,\; C-Nucleus, \;D-Asymmetric spindle, \;EVegetative cell, \;F-Generative cell$
$A-Vacuole, \;B-Nucleus, \;C-Pollen tetrad, \;D-Vegetative cell, \;E-Asymmetric spindle, \;F- Generative cell$
Solution
Stage of microsporogenesis forming pollens. Pollen Grain When pollen grain matures it contains two cells $(i)$ Vegetative cell Vegetative cell is bigger and has abundant food reserve and a large irregular shaped nucleus $(ii)$ Generative cell The generative cell is small and floats in the cytoplasm of vegetative cell. It is spindle-shaped with dense cytoplasm and a nucleus
