Answer:
The correct option is;
True
Explanation:
The digestive system of Cnidarians is incomplete having only one single opening which is the gastrovascular cavity the representing the anus and the mouthof the Cnidarians
The hollow body of the Cnidarian polyp which allows water through has tentacles at the top bearing cells meant for stinging
A prey caught by the tentacles is drawn in to the mouth and ingested
The Cnidarians are able to attach to surface due to their attachment adapted lower end
The correct option is therefore true.
I would say that a superficial fungal infection that occurs on the head would be tinea capitis and it is of the scalp and is also called ringworm and is more common in kids and can be treated by oral medicine and the area must be kept clean.It can also occur in men's beards.
I would hazard a guess to say that they aren't as good at it because they don't need to be. In lakes and even the ocean, the state of the environment would stay relatively constant negating the need for homeostasis or regulating salt levels.
My guess would be protein synthesis.
