In the lab, we tried to determine how herl mutant C-ferns are altered in their sexual development and we set up various combinations of gametophyte cultures (WT and heri) and various types of filtrates. Indicate which are treatments and which are +ve controls and -ve controls? WT gametophytes and WT filtrate WT gametophytes and herl filtrate hert gametophytes and WT filtrate her 1 gametophytes and her 1 filtrate her 1 gametophytes and sterile water WT gametophytes and water.