In the leaf of a plant,the vascular bundles are located in the $..............$

Starch is mainly manufactured by

In leaves,the protoxylem elements:

The stomata in an isobilateral leaf:

Which of the following is absent in a monocot leaf?

The epidermis in a dorsiventral leaf:
$(a)$ Covers both adaxial and abaxial surfaces
$(b)$ Is not covered by cuticle
$(c)$ Bears more stomata on the upper side
$(d)$ May even lack stomata on the upper side
Which of the above statements are correct?