phototropic bacteria

NOUN
20 LETTERS · STARTS WITH P

phototropic bacteria is a valid 20-letter word worth 32 points in Scrabble and 36 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
P3H4O1T1O1T1R1O1P3I1C3B3A1C3T1E1R1I1A1
3 + 4 + 1 + 1 + 1 + 1 + 1 + 1 + 3 + 1 + 3 + 0 + 3 + 1 + 3 + 1 + 1 + 1 + 1 + 1 =32 PTS
DOUBLE WORD → 64TRIPLE WORD → 96
MEANING

What does phototropic bacteria mean?

NOUN · 1 SENSE
1

Green and purple bacteria; energy for growth is derived from sunlight; carbon is derived from carbon dioxide or organic carbon.