life cycles of phyla of embryophytes

Which of the following occur in the lifecycles of all phyla of embryophytes? (circle them)(there should be 14 of them)

sporangia,                            
elators,
tube nucleus,                        
sieve cells,
embryos,                              
antheridia,
syngamy w/in gametophyte plant body,      
cellulose,                              
cork cabmium,
synergids,                          
diploidy,
chlorophyll a and b,                  
indusia,
pseudopodium,                        
phelloderm,
alternation of generations,          
siphonostele,
haploidy,                            
embryo sac,
spores,                              
double fertilization,                        
cell walls,
xylem vessel,                        
meiosis,
retention of zygote w/in plant body,  
meristems,
rhizomes,                            
mitosis,