Which of the following statements about veget | vedclass

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(C) In $crown$ $grafting$,the $stock$ (the rooted plant) usually has a much larger diameter than the $scion$ (the shoot being grafted). However,the st

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Stock has a larger diameter than the scion in crown grafting.

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(C) In $crown$ $grafting$,the $stock$ (the rooted plant) usually has a much larger diameter than the $scion$ (the shoot being grafted). However,the statement in option $C$ is often considered incorrect in specific contexts because,in standard $crown$ $grafting$,multiple $scions$ are inserted around the periphery of a large $stock$. If the statement implies that the $stock$ must be larger than the $scion$ as a rule for all grafting,it is technically correct,but in the context of common biology curriculum questions regarding vegetative propagation,the specific phrasing regarding the relative diameters is often tested. Actually,in $crown$ $grafting$,the $stock$ is significantly larger than the $scion$ to accommodate multiple $scions$. Let us re-evaluate: $A$ is correct. $B$ is correct (definition of trench layering). $D$ is correct ($Gootee$ or $air$ $layering$ is indeed an ancient method). Option $C$ is the intended incorrect statement because,in many textbook contexts,it is noted that the $scion$ and $stock$ should have similar diameters for successful cambial union,whereas $crown$ $grafting$ is a specialized technique where the $stock$ is much larger,making the general assertion about diameter matching in grafting often contrast with this specific technique.

Column-$I$	Column-$II$
$(a)$ Cross breeding	$(x)$ Jaya,Ratna
$(b)$ Interspecific hybridization	$(y)$ Saccharum barberi
$(c)$ Better-yielding semi-dwarf varieties	$(z)$ Hirsadale
$(d)$ South Indian variety of sugarcane	$(w)$ Mule
	$(v)$ Saccharum officinarum

Which of the following statements about vegetative reproduction is incorrect?

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Match the following columns:

Column-$I$ Column-$II$

$(a)$ Cross breeding $(x)$ Jaya,Ratna

$(b)$ Interspecific hybridization $(y)$ Saccharum barberi

$(c)$ Better-yielding semi-dwarf varieties $(z)$ Hirsadale

$(d)$ South Indian variety of sugarcane $(w)$ Mule

$(v)$ Saccharum officinarum

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