Describe internal structure of sunflower leaf.
In leaves, the ground tissues consists of
Grass leaves can fold and unfold because they
Assertion: Bulliform cells are useful in the unrolling of leaf.
Reason: Bulliform leaves store water
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?
Palisade parenchyma is absent in leaves of