In . . . . . . placentation,the placenta forms a ridge along the ventral suture of the ovary.

The flowers are Zygomorphic in:
$(a)$ Mustard $(b)$ Gulmohar $(c)$ Cassia $(d)$ Datura $(e)$ Chilly
Choose the correct answer from the options given below:

In which of the following,the flowers always have a single whorl of perianth?

Corolla in China rose are:

Select the correct matching $:-$

Column $I$	Column $II \&$ Column $III$
$(1)$ Hypogynous	$(A)$ Gynoecium occupies highest position; $(X)$ Mustard,Brinjal,China rose
$(2)$ Epigynous	$(C)$ Margin of thalamus grows upward enclosing ovary completely; $(Z)$ Guava,Cucumber
$(3)$ Perigynous	$(B)$ Gynoecium situated in centre; $(Y)$ Plum,peach,rose

Tetradynamous condition is related to