Explain the types of gynoecium based on the number and arrangement of carpels.

Select the correct option based on the structure given below.

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

Which one of the following statements is correct?

Read the following statements.
$(i)$ Gynoecium is situated in the centre and other parts of the flower are located on the rim of the thalamus almost at the same level.
$(ii)$ Ovary is half-inferior.
$(iii)$ Examples are plum,rose and peach.
Which condition of flowers is being described by the above statements?

Two spines in $Trapa$ fruit ($Singhara$ fruit) are modifications of