Question

branches

1. each branching point represents a point in evolutionary history where an ancestral evolutionary lineage gave rise to a new lineage. the most recent common ancestor shared by all lineages in this cladogram is represented by the number type here

Explanation:

In a cladogram, the starting - point of the diagram represents the most recent common ancestor of all the lineages shown. Here, the number 1 is at the start of the cladogram and represents the most recent common ancestor shared by all the plant lineages (green algae, mosses and relatives, ferns and relatives, gymnosperms).

Answer:

1