Question

What is bisexual and unisexual in animals?

Answer 1

Reproduction is one of the major biological processes carried out by the living organism. The living organism bears specialized organs or reproductive systems to carry out the process of reproduction. In higher organisms, the gametes produced by the parents are responsible to give rise to a new individual.

Complete answer:
In most common terms, the process of reproduction is the process through which the living organism replicates or produces offspring. The process is complicated in nature and involves the presence of gametes of usually two sexes. Often, when a single individual bears two distinct reproductive organ system is said to be bisexual. Certain organism bear only one sex or reproductive organs are known as unisexual organs. Unisexual and bisexual terms are used to describe the sex of an individual in animals.

The main points of differences between unisexual and bisexual organism are as follows:

Unisexual animals	Bisexual animals
Organism bears only one type of reproductive organs in an individual.	Organism consists of both the types of reproductive organs in the same individual.
Individuals of the male and female sexes are different individuals and possess distinct features.	Individuals consist of characters of both the sexes.
This type of organism produces either male or female gametes but never both.	This type of organism produces both the male or female gametes.
The organism may produce gametes at the same time period.	The organism produces gametes in which one of the gametes is produced earlier than the other.
They can be also called as dioecious organisms	They are also known as monoecious organisms.
Humans, birds, reptiles are some of the examples of unisexual organisms.	Earthworm, leech, tapeworm are some of the examples of bisexual organisms.

Additional information:
In biology, unisexuality is the state of a male or female gamete in organism or species, but never of both. A unisexual organism of a bisexual species possesses both male and female gonads in separate individuals. This condition is sometimes referred to as dioecism in plants. A unisexual species is one in which every individual has the same sex. Some whiptail species, for instance, are females only.

Note: Unisexual organisms are the organism having either male or female reproductive organ but both the sexes cannot be present in the same individual. It is present in all of the higher organisms. Bisexual are the organism that bear both reproductive forms in a individual organism. Earthworms, sponge, leech, for example bisexual organisms.