Question

In (i) condition, both male and female flowers are borne on the same plant; an example of such plants is (ii).
A. (i) monoecious, (ii) cucurbit
B. (i) monoecious, (ii) papaya
C. (i) dioecious, (ii) cucurbit
D. (i) dioecious, (ii) papaya

Answer 1

Sexual reproduction involves the formation and fusion of gametes. The sexual reproduction process is divided into pre-fertilisation, fertilisation and post-fertilisation events. The process of gametogenesis and gamete transfer completes the process of pre-fertilisation while the formation of zygote and embryogenesis forms post-fertilisation. Thus, organisms may be classified as bisexual or unisexual. In angiosperms, sexuality is classified on the basis of the production of diverse types of flowers and thus plants are classified as monoecious and dioecious. On the other hand, flowers may be grouped as bisexual or unisexual.

Complete step by step answer: Sexual reproduction in organisms generally involves the fusion of gametes from two different individuals. Based on the sexuality, plants can be classified as:
If a plant contains both male and female reproductive structures, they are known as bisexual and if reproductive structures are present in different plants then they are known as unisexual.
The bisexual condition in fungi and plants is termed as homothallic and monoecious, whereas terms such as heterothallic and dioecious describe unisexual condition.
The unisexual male flower in flowering plants i.e., bearing stamens, is called the staminate, while the female bearing pistils is called the pistillate.
If both male and female flowers are present on the same plant then it is referred to as monoecious and if male and female flowers are present on different plants, then it is called dioecious.
Cucurbits and coconuts are some examples of monoecious plants while papaya and date palm are examples for dioecious plants.
In monoecious conditions, both male and female flowers are borne on the same plant; an example of such plants is cucurbit. So, the correct answer is option (A).

Note: In case of animals, the individuals of all species are either male or female and are referred as unisexual and the species which possess both the reproductive organs are called bisexual. Some typical examples of bisexual animals include earthworms, sponges, tapeworms and leeches. They possess both male and female reproductive organs, and are also known as hermaphrodites. An example of a unisexual species is cockroach.