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(B) The correct answer is $B$. In $Dianthus$,the type of placentation is free central. In free central placentation,the ovary is unilocular (single-ch

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(B) The correct answer is $B$. In $Dianthus$,the type of placentation is free central. In free central placentation,the ovary is unilocular (single-chambered) and the ovules are borne on a central axis that is not connected to the ovary wall by septa. Figure $B$ illustrates this arrangement,where the ovules are attached to a central column within a single-chambered ovary,which is characteristic of the family $Caryophyllaceae$ (e.g.,$Dianthus$ and $Primrose$).

Column-$I$	Column-$II$
$(i)$ Fibrous root	$(a)$ Citrus
$(ii)$ Stem tendrils	$(b)$ Legumes
$(iii)$ Stem thorns	$(c)$ Wheat
$(iv)$ Pulvinus	$(d)$ Grape vine

Column-$I$	Column-$II$
$(i)$ Tap root	$(a)$ Sweet potato
$(ii)$ Adventitious root	$(b)$ Turnip
$(iii)$ Stem	$(c)$ Wheat
$(iv)$ Fibrous root	$(d)$ Potato

Which one of the following figures represents the placentation in Dianthus?

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Match the Column-$I$ and Column-$II$ and choose the correct option:-

Column-$I$ Column-$II$

$(i)$ Fibrous root $(a)$ Citrus

$(ii)$ Stem tendrils $(b)$ Legumes

$(iii)$ Stem thorns $(c)$ Wheat

$(iv)$ Pulvinus $(d)$ Grape vine

Match the following:

Column-$I$ Column-$II$

$(i)$ Tap root $(a)$ Sweet potato

$(ii)$ Adventitious root $(b)$ Turnip

$(iii)$ Stem $(c)$ Wheat

$(iv)$ Fibrous root $(d)$ Potato

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