Question

What is the difference between unisexual and bisexual animal. Give one example each.

Answer 1

Hint: The sexuality of an organism means whether the organism is a male or female (gender) and that is denoted by their reproductive system. Bisexual and unisexual can be differentiated by the presence of one type of reproductive system or having male and female reproductive system both in an organism.

Complete answer:
When the male and female reproductive system are present in a single same organisms it is known as bisexual whereas when an organism has one eighter male or a female reproductive part it is known as unisexual organism.
The major difference between them is:

Bisexual animal	Unisexual animal
In bisexual organisms, both the sexes male and female reproductive part is present in an individual	In unisexual animal, only male reproductive part or female reproductive part is present hence they can be male or female as two different individuals
With help of them (gonad) bisexual can produce offspring individually	They are dependent on the opposite gender reproductive part for the production of offspring
Mostly mitotic division occurs for fusion gametes. They are not dependent on other individuals for offspring production	Mostly meiotic division occurs for the fusion of gamete
They can produce male gamete and female gamete as well	They can produce male gamete or female gamete (only one)
For example earthworm, leech, tapeworm	For example humans, dogs

Note:
Unisexual females usually have a specific mating time when they can give birth. Genetic variation can be seen in the bisexual organism’s offspring more than the offspring of the unisexual organism. Offsprings of unisexual organisms are similar to their parents and can be referred to as clones.