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Match the following symbols and terms used in floral formulas:
Column-$I$ Column-$II$
$(a)$ $\oplus$ or $\text{symbol shown}$ $(p)$ Perianth
$(b)$ $\overline{G}$ $(q)$ Bracteate
$(c)$ $P$ $(r)$ Inferior ovary
$(d)$ $Br$ $(s)$ Bisexual

Match the columns:
Column $I$ Column $II$
$(a)$ The outermost whorl of the flower $(w)$ Corolla
$(b)$ The second accessory whorl of the flower $(x)$ Calyx
$(c)$ The essential outer whorl of the flower $(y)$ Pistil (Gynoecium)
$(d)$ The innermost whorl of the flower $(z)$ Stamen (Androecium)

Which of the following is an incorrect pair regarding Bentham and Hooker's classification of Polypetalae?

Match the plants in Column-$I$ with their specific floral characteristics in Column-$II$ and select the correct option.
Column-$I$ Column-$II$
$(A)$ China rose $(p)$ Thalamus disc-shaped
$(B)$ Lemon $(q)$ Ovary inferior
$(C)$ Rose $(r)$ Thalamus dome-shaped
$(D)$ Sunflower $(s)$ Perianth
$(E)$ Bougainvillea $(t)$ Thalamus cup-shaped
$(u)$ Ovary superior

Vertical transmission of mycoplasmal diseases in plants may occur through which of the following?

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