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Is the planaria digestive tract complete or incomplete?
Mammals have a complete digestive tract, it starts from mouth to anus. Although each species have some different type and length of tract, they have esophagus, ventriculus, intestinum which function to support a complete food metabolism. Besides, some digestive glands also support this function.
Do clams have a complete or incomplete digestive tract?
They have complete digestive system.
Does a perch have a gastrovascular cavity or a complete digestive tract?
A perch has a complete digestive tract, which includes a mouth, esophagus, stomach, intestine, and anus. This structure allows for more efficient digestion and nutrient absorption compared to organisms with a gastrovascular cavity.
The complete lining of a person's digestive tract is renewed approximately every?
The complete lining of a person's digestive tract is renewed approximately every 3-5 days. This rapid turnover is necessary to replace old cells and maintain the health and function of the digestive system.
What is a characteristic shared by all chordates the phylum in which humans are classified?
All chordates are deuterostomes, meaning that in all chordates, the anus develops first during embryological development. All chordates are bilaterally symmetric. Most chordates have a complete digestive tract, and a body cavity. Note: not all chordates have these features, but it is believed that their absence in some chordates is secondary. All chordates are of course animals and eukaryotes.
What phylum of worms has a true coelom and a complete digestive tract?
The phylum Annelida includes worms that have a true coelom and a complete digestive tract. Annelids, such as earthworms and marine bristle worms, exhibit segmentation and are known for their well-developed body cavities and digestive systems.
What is leech digestive tract?
Leeches have a complete digestive tract. Leeches are members of Phylum Annelida. This phylum has the general characteristic of having a complete digestive tract, i.e. food goes in through the mouth, pass through digestive tract of some sort like stomach and/or intestine, waste gets discarded through some sort of rectal opening, i.e. anus. In comparison, an incomplete digestive tract generally means food goes in and waste come out of the same opening, i.e. mouth=anus. Lower level invertebrates have incomplete digestive tract like Phylum Cnidaria and Phylum Platyhelminthes members.
What is Sac filled with digestive chemicals?
The stomach
One difference between a gastrovascular cavity and a complete digestive tract?
A gastrovascular cavity is a digestive sac with only a single opening. A complete digestive tract (otherwise known as an Alimentary canal) has two openings (a mouth and anus) between its digestive tubes unlike the gastrovascular cavity in which food is ingested and eliminated through the same opening (example would be hydra)
Which phylum of worms has a false coelom and a complete digestive tract?
aschelminthes
What is replaced by a backbone in vertebrates?
It is a flexible, rodlike notochord that runs dorsal to the digestive tract and provides internal support. In vertebrate chordates, it is replaced by a vertebral column or backbone long before maturity.
Is the crayfish digestive tract complete or incomplete?
The crayfish digestive tract is complete. It consists of a mouth, esophagus, stomach, and intestine, allowing for the digestion and absorption of nutrients from food. The waste is eliminated through the anus.
