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What are the animals in which the anus develops before the mouth?
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∙ 11y ago
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How can you tell the difference between the mouth and the anus of a earthworm?
you can tell the difference between the mouth and anus because the mouth is darker then the anus and the mouth is a little bit larger than the anus
Is the anus cleaner than the mouth?
Anus itself is,in a different view, the last ending of the digesting system that works as a valve to hold "dirt" from going out the inner part of the anus MUST be so dirty if you Wash it with a mild soap and water the anus will be clean.
What the conection of mouth and back hole with body?
The digestive system, a tube, connects the mouth to the anus.
Where does the alimentary canal run from?
The alimentary canal runs from the mouth to the anus.
Trace a piece of food from the mouth to the anus?
Mouth, pharynx, epiglottis, stomach, small intestine, large intestine
Among coelomates which of these develops by spiral cleavage and the mouth forms before the anus?
deuterostomes
What is deuterostome development?
The mouth is formed second, after the anus.
What is the structure that is found in an opening to the central cavity and develops into a mouth or an anus in the organism?
blastopore
The structure that is found in an opening to the central cavity and develops into a mouth or an anus in the organism is called?
blastopore
The structure that is found in an opening to the central cavity and develops into a mouth or an anus in the organism is called the?
blastopore.
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.
Are there more than one anus on a human?
No. All animals have one mouth and one anus.
What is the difference between protosome and deuterosome?
Protostomes Deuterostomes 1.Mouth develops first then anus 1. Anus develops first then mouth 2.Blastopore develops into mouth 2.Blastopore develops into anus 3.Coelom absent and a schizocoel 3. Coelom develops as enterocoel by fusion develops by a split of mesoderm of gut pouches. 4.Cleavage is spiral and determinate 4. Cleavage is radial and indeterminate. 5.Larva is trochophore. 5. Larva is bipinnaria or tornaria 6.E.g. Molluscs, annelida & 6.E.g. Echinodermata & Chordata arthropodes
What is the organism whose blastopore becomes an anus?
All animals except for echinoderms (such as starfish) and chordata (mammals, reptiles, fish and birds), haemichordata (vermiform creatures and chaetognatha (worms with "hairs".).
An animal with an anus that develops from or near the blastopore?
Its a deuterostome
What is an anus for a jelly fish?
The anus for a jellyfish is its "mouth".
Do roundworms have a mouth and an anus?
A planarian has a mouth located in the middle of the underside of their bodies. They don't have anuses.
