I would say to be safe age 11.
Two identical DNA strands
A it does not address the loss of biodiversity
Answer: The answer is ROOT
Explanation: Briophytas belong to the plantae kingdom, therefore they have a cell wall in their cells, and chloroplasts. They have sporangia (structure where the spores are produced and stored) but they do not possess proper roots. Instead they have a structure called "rhizoid" whose function is the fixation to the substrate.