Question

Which of the following is a dimerous flower?
A. Poppy
B. China rose
C. Magnolia
D. Tulip

Answer 1

Hint: The flower is the modification of the shoot which is meant for sexual reproduction in angiosperms. The flower has the male and the female reproductive parts. Apart from that, they usually have large and bright coloured petals to attract insects for pollination. The dimerous flower is a flower in which the petals or the floral whorls are present as two or multiples of two in number.

Complete answer:
a) Poppy – The poppy plant belongs to the family Papaveraceae. Its sub-family is Papaveroideae. It is a flowering plant. The flowers of Poppy are dimerous because the whorls are arranged in the multiples of two.
b) China rose – China rose is also known as Hibiscus. It belongs to the family Malvaceae. Its subfamily is Malvoideae. It is a flowering and ornamental plant. the flowers or Hibiscus are pentamerous. This is because the whorls are arranged as five in number.
c) Magnolia – Magnolia plant belongs to the family Maglionaceae. It is a flowering plant. The flowers of Magnolia are trimerous. This is because the whorls are arranged in multiples of three.
d) Tulip – The tulip plant belongs to the family Liliaceae. Its sub-family is Lilioideae. It is a flowering plant. The flowers of Tulip are trimerous. This is because the whorls are arranged in multiples of three.
Hence, the correct answer is option A.

Note: Some species of poppy are sources of the narcotic drug opium. Opium is used to make powerful medical alkaloids like morphine. Due to this reason, the poppy is used as narcotic medicines and also as an analgesic. However, some people also use it as a recreational drug to feel euphoria. Therefore, the cultivation of poppy is banned by the government.