What is a characteristic that distinguishes bryophytes from the other plant phyla?

Part A:

Briefly, explain the current hypotheses about how brown algae, red algae, chlorophytes and charophytes (couple of groups of green algae), and land plants are related. What are the characteristics of the land plants that distinguish it from the most closely related algal group, and (if applicable) how do each of these characteristics benefit plants in a terrestrial environment?

Part B:

What are the differences between plant cells, animal cells, and bacterial cells. And what are the characteristics of different plant cell types.

Lithhops are succulent plants that resemble stones. Describe four of the characteristics of life that distinguish these plants from the dead stones they mimic

What characteristics distinguish branchiopoda, ostracoda, copepoda, thecostraca, and malacostraca?