C cytosine need help with this problem

In terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants are most similar to a ) moss sporophyteb) moss gametophyte bearing both male and female gametangiac) fern sporophyted) fern gametophyte bearing only antheridia

Pulmonary arteries carry highly oxygenated blood. true or false?

Why were the results whit just water so much different than the trials with the detergent ?