Question

the spots on the posterior surface of the leaflets of fern are..........

Answer 1

These are called stomatas....
These are the tiny pores which helps in the transpiration. It is enclosed by the guard cell

Hope it will helps uuu.... .

Answer 2

$\huge\mathfrak\blue{hello}$

the spots on the posterior surface of the leaflets of fern are..........

===STOMATA