Animal with a gut that has only one opening is the cnidarian, such as jellyfish and sea anemones. This single opening serves as both the mouth and anus for the digestion process.
Octopus
Three Gut Records ended in 2005.
True
A tube gut has one opening. The mouth while serving as the beginning of digestion also serve as the anus and eliminates waste.
No, platyhelminthes do not have a through gut. They have a blind gut, meaning that they have a single opening that serves as both the entrance and exit for food and waste. This type of digestive system is common in simple organisms like flatworms.
A) Only one opening: they expel undigested material through the mouth.
A urethral opening is the opening of the end of the penis to comes out the sperm cell and the bladder. =)
Yes, arthropods have a through gut, also known as a complete digestive system. This consists of a mouth at one end for ingestion of food, and an anus at the other end for elimination of waste. Food passes through various regions of the gut where digestion and absorption of nutrients occur.
An incomplete gut only has 1 opening. Basically if something has an incomplete gut, it has no anus, and all food that it takes in must either be completely digested, or re-excreted through the mouth.
A cnidarian has an incomplete gut with just one opening. BTW Those who said that "How many openings does cnidaria have?" and "How many opening does an earthworm have" are the same question are idiots. An earthworm in an annelid, or a member of phylum Annelida. Cnidarians are in an entirely different and less developed phylum, that is, phylum Cnidaria. So there. STAY IN SCHOOL!
It is lit at the end of the opening ceremony.