Question

what is unisexual and bisexual give some examples

Answer 1

Bisexual Flower  → Flower having both gynoecium and androceium are known as Bisexual Flower.
 
For Example → Hibiscus , maize , Pea 

Unisexual Flower  → Flower with either androecium  or gynoecium are called as Unisexual Flower.

It is of two type  - 

1. Male Flower ( Staminate Flower ) 
Ex → Papaya , Maize 

2. Female Flower ( Pistillate Flower  ) 
Ex → Papaya , Maize