A dicotyledonous plant bears flowers but never produces fruits and seeds. The most probable cause for the above situation is

Options

A. plant is dioecidous and bears only pistillate flowers
B. plant is dioecious and bears both pistillate and staminate flowers
C. plant is monoecious
D. plant is dioecious and bears only staminate flowers

Answer

D

Explanation

In dioecious plants, the unisexual male flower is staminate, i.e., bearing stamens only, while the female is pistillate or bearing pistils only. For the production of fruits and seeds fertillisation must take place, which is possible only in the presence of both male and female flowers.
When the plant is dioecious, it will give rise to the following situations
(i) If the plant is dioecious and bears only pistillate flowers, fertillisation can take place with the help of poilinators.
(ii) If the plant is dioecious and bears only staminate flowers, fertilisation can't take place, because female gamets is non-motile which can't reach the male gamete in order to fuse with it.
When the plant is monoecious (i.e., carryins both stamen and pistill together, it may lead to self-fertilisation and production of seed.