Identify the structures marked \( A \) to \( F \) in the given diagram. (a) A-Asymmetric nucleus...

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Identify the structures marked \( A \) to \( F \) in the given diagram.
(a) A-Asymmetric nucleus, B-Nucleus, C-Generative cell, D-Vegetative cell, E-Pollen, F-Pollen tetrad
(b) A-Pollen tetrad, B-Pollen, C-Generative cell,
D-Vegetative cell, E-Asymmetric spindle, F-Nucleus
(c) A-Pollen tetrad, B-Vacuole, C-Nucleus,
D-Asymmetric spindle, E-Vegetative cell, F-Generative cell
(d) A-Vacuole, B-Nucleus, C-Pollen tetrad, D-Vegetative cell, E-Asymmetric spindle, F-Generative cell
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