Question

A plant bearing both male and female flowers/sex organs is
(a) Monoecious
(b) Dioecious
(c) Unisexual
(d) Bisexual

Answer 1

Hint: Based on the presence of male and female reproductive organs in the same plant or different plants, the flowers and plants are divided into various groups. An example for a plant bearing both male and female flowers or sex organs are corn, maize etc.
Typically the flowers are categorized as unisexual and bisexual depending on their reproductive organs present in the same flower or different flower respectively. And those plants that contain these flowers are known as monoecious or dioecious.

Complete answer:
Monoecious is a condition where the reproductive organs of males and females are located on the same plant but two different branches. They both have female or pistillate flowers and male or staminate flowers. Geitonogamous pollination occurs in such a situation.
Dioecious is a condition in which the reproductive organs of both males and females are located on two separate plants. Carica papaya for example is a dioecious plant.
A flower that has stamens or carpels but not both are called unisexual flowers. They are called incomplete flowers. They undergo cross-pollination to replicate. Examples include pineapple, papaya, watermelon, and so on.
A flower that has stamens, as well as carpels, is called bisexual flowers. They become self-pollinated. Examples include sunflower, lily, rose, etc.
Self-fertilization is a useful ability since it can ensure a plant species persists and spreads when there are no other species representatives present. Because of that, many monoecious plants may fertilize themselves, but they may have adaptations such as staggered blooming times that are designed to make it difficult. The species' genetics can be impaired by self-fertilization. The ability to cross-pollinate when an alternative is available can be extremely useful for the species' long term genetic robustness.

So, the correct answer is, 'Monoecious'.

Note: Maize produces male and female flowers in physically isolated sections of the plant, as a monoecious plant. The tassel (staminate or male inflorescence) originates from the apical meristem of the shoot, while the ears (pistillate or female inflorescences) derive from the apices of the axillary bud. The male and female flowers appear to look different, as one is designed to produce pollen for distribution, while the other produces ova that can be fertilized, resulting in seed growth.