Thee are 10 flowers in one individual plant of crotolaria.In each microsporangium of every stamen of all the flowers,there are 30 microspore mother cells.How many pollen grains are formed from that plant?

Hai Tejaswini,

One Microsporemother cell forms 4 microspores by undergoing Meiosis cell division.
So as per your question 30 Microspore mother cells form
30x4- Microspores=120 Microspores.
Go through the below diagrams for more information.