Question

the _forms the middle axis of the leaf​

Answer 1

Answer:

Below the epidermis of dicot leaves are layers of cells known as the mesophyll, or “middle leaf.” The mesophyll of most leaves typically contains two arrangements of parenchyma cells: the palisade parenchyma and spongy parenchyma.

Answer 2

Answer:

Songy parenchyma and phloem parenchyma