Which of the following is descriptive of pollen? (choose all that apply). a. it combines with another cell to make a seed. b. it is often dispersed by wind. c. it is the female gametophyte. d. it is the male gametophyte.

many phylogenetic trees have a single lineage at the base representing a common ancestor. a lineage that evolved early from the root and remains unbranched is called basal taxon. when two lineages stem from the same branch point, they are called sister taxa.

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explanation: