Bladder, I believe. But they are saying that my answer must be 20 Characters long...
        
             
        
        
        
Blood types:
AB +
AB -
A +
A -
B +
B -
O +
O -
It is possible to have a child with O blood despite the parents having different blood types.
While the man tested for B blood, he could have been a combination between type o and B whereas, the woman was a combination of type A and o. Since A/B are dominant, they would 'stand out' contrarily to o. 
This means that their children could have AB or O blood. 
 
        
                    
             
        
        
        
Answer: diploid generation
Explanation: MORPHOLOGY AND DEVELOPMENT OF THE MOSSES
In vascular plants the dominant stage of this lifecycle is the diploid generation. In mosses, the dominant stage is the haploid generation (the gametophyte). This means that the green, leafy gametophytic tissue is haploid (has only one set of chromosomes). hope this helps. Can u give me brainliest