How many leaves are there at each joint of stem?[1]
[Footnote 1: There are two simple leaves at the next node to the
cotyledons; after these there is one compound leaf at each node.]
How do they differ from the first pair?
Outlines of Lessons in Botany, Part I; from Seed to Leaf For the Use of Teachers, or Mothers Studying with Their Children · 第 21 / 52 题