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Among coelomates which of these develops by spiral cleavage and the mouth forms before the anus?
Annelids, such as earthworms, are coelomates that develop by spiral cleavage and have a mouth that forms before the anus during embryonic development.
What does the blastopore become?
At the stage of development when the gut forms there is only a single opening into the digestive track, this opening may become either the mouth or anus. In the echinoderms, chordates, and hemichordates the blastopore becomes the anus and a new opening forms the mouth, these are called deuterostomes
What organ system does the anus belong?
The digestive sytem.
What is a blastopore and how is it used to indicate evolutionary relationship?
It's a cavity that becomes the mouth and anus. Depending on which forms first, the animal is classified as a protostome (first mouth) or deutrosome (second mouth). This shows a relationship among very differed looking animals.
Which has more bacteria human anus or human mouth?
The human mouth typically contains more bacteria than the human anus. The mouth provides a warm, moist environment that bacteria thrive in, while the anus has a lower bacterial population due to its exposure to digestive enzymes and regular bowel movements that help to flush out bacteria.
What is the continuous tube from the mouth to the anus called?
alimentary canal
Organ of digestion in a roundworm?
mouth, anus, intestines, pharynx
38 What is the name of the continuous tube from the mouth to the anus that is known as your digestive tract?
alimentary canal.
True or false the alimentary canal is a continuous tube from the mouth to the anus?
True. The alimentary canal, also known as the digestive tract, is a continuous tube that runs from the mouth to the anus. It includes organs such as the esophagus, stomach, small intestine, and large intestine.
Does the blastopore forms a mouth?
In protostome ("first mouth") the blastopore, or the first opening formed becomes the mouth. In deuterostomes ("second mouth"), the blastopore forms the anus and the mouth develops from a second opening.
Among coelomates which of these develops by spiral cleavage and the mouth forms before the anus?
Annelids, such as earthworms, are coelomates that develop by spiral cleavage and have a mouth that forms before the anus during embryonic development.
Through what organ's and in what order does soil pass between an earthworm's mouth and anus?
It goes from the mouth to the Esophagus then the crop to the gizzard then lastly the insestine.
What does the blastopore become?
At the stage of development when the gut forms there is only a single opening into the digestive track, this opening may become either the mouth or anus. In the echinoderms, chordates, and hemichordates the blastopore becomes the anus and a new opening forms the mouth, these are called deuterostomes
Do Sponges have a Deuterostome?
no they are neither deuterostome nor prostome because they dont have an alimentary canal. so how can they be any of them? deuterostome are those in which anus forms first then mouth whereas sponges dont have any organ as they are loose aggregate of cells and digestion is intracellular.
What is an anus for a jelly fish?
The anus for a jellyfish is its "mouth".
Among coelomates in which of these does development occur by radial cleavage and the anus forms before the mouth?
Animals with deuterostome development exhibit radial cleavage, where the cells divide parallel or perpendicular to the polar axis of the embryo. In deuterostomes, such as echinoderms and chordates, the anus forms before the mouth during embryonic development.
What has most germs the anus or mouth?
the mouth.
