10. In which of the following pairs of parts of a flowering plant is epidermis absent?

(a) Root tip and shoot tip

(b) Shoot bud and floral bud

(c) Ovule and seed

(d) Petiole and pedicel

15. When we peel the skin of a potato tuber, we remove

(a) periderm

(b) epidermis

(c) cuticle

(d) sapwood