Question

what will happen if there is no stomata in plant

Answer 1

if there will be no stomata in plant then there will be no process of photosyntheis because there will be no exchange of gas.
transpiration process will stop which will effect the temperature of the plants as well as there will be no transport of materials 

Answer 2

if there will be no stomata the exchange of gases wont take place which may result in death of all organisms bcoz photosynthesis will not take place too