Question

Pentamerous actinomorphic flowers, bicarpellary ovary with oblique septum and a fruit capsule or berry, belong to family
A) Liliaceae
B) Asteraceae
C) Brassicaceae
D ) Solanaceae

Answer 1

Hint: When a flower can be divided into two equal radial halves in any radial plane passing through the centre, it to be actinomorphic, e.g. mustard, datura, chill. When an ovary contains two carpels it is known as a bicarpellary ovary. A flower may be trimerous, tetramerous or pentamerous when the floral appendages are in multiple of 3, 4 or 5, respectively. Flowers with bracts-reduced leaf found at the base of the pedicel-are called bracteates and those without bracts, ebracteate.

Complete answer:
Now let us match the options with the given definitions in hint
Liliaceae :- the flowers are actinomorphic but the ovary is tricarpellary. The fruit is a capsule and rarely berries. It has axile placentation .Hence this option is not correct.
Asteraceae :- it has bicarpellary ovary but the fruit is not berry. It possesses actinomorphic symmetry. Hence this option is not correct.
Brassicaceae :- the flowers are actinomorphic. Ovary is bicarpellary. Flowers are tetramerous and not pentamerous. So the option is not correct.
Solanaceae :- it has pentamerous and actinomorphic conditions. The ovary is bicarpellary and carpels are used. The fruit is a berry and a capsule. So the option is correct.

Our required answer is d that is Solanaceae.

Note: Solanaceae is commonly known as potato family. It has a swollen placenta with many ovules that have oblique septum. The ovary is syncarpous in them. They possess two carpels. They possess radial symmetry .