Biology. Can You Help me? Thank You Lots!?

Question

23-Segmented tube worms that live near the vents grow to lengths of 1.5 m in contrast to the growth of related tube worms living in other environments, whose growth is measured only in centimeters at most. You hypothesize that the food that the worms eat is more abundant at the vents. When you collect samples of the worms, you discover that they have no mouth or other means of taking in food. Hypothesize how the tube worms are obtaining nutrients.

Answer 1

tube worms have a symbiotic relationship with bacteria which grow in profuse quantities near the underwater vent. The bacteria find their way into the tube worms, literally between their cells. The tube worms receive nutrition from the bacteria, and the bacteria in turn receive some vital functions from the tube worm.