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An animal whose gut has only one opening has a gastrovasuclar cavity. A Jellyfish is an example of an animal with a gastrovasuclar cavity.

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From which animal do we get cat gut?

Most cat gut is made from sheep or cow intestines. For the most part, the material has been replaced by nylon polymers.


Do coelenterates have a coelom?

No. A coelenterate is an animal (such as a jellyfish), whose main body cavity is also its alimentary canal (gut). Most animals, on the other hand, have a body cavity (called a coelom) that is separate from the gut. For instance, inside your own body, you have an alimentary canal (your esophagus, stomach and intestines) and a separate body cavity that contains your heart, lungs, liver, etc. In a coelenterate, there is only one cavity.


What is the mechanics of an insect's pharynx?

An insect's pharynx works by contracting muscles to help push food downwards toward the esophagus. The pharynx also helps regulate the flow of air during respiration by controlling the opening and closing of the respiratory system. Insects have a tube-like structure that extends from the pharynx to the gut, allowing for both food and air to pass through.


Is a rat a hindgut or foregut fermenter?

A rat is a hind-gut fermenter - most digestion takes place in the cecum and colon to the rear of the digestive system, unlike ruminants, which are fore-gut fermenters. In some hind-gut fermenters, foods that are high in fiber are stored and fermented in the cecum, usually at the very end of the digestive system. The fermented food then leaves the body as feces. The animal eats this first-time-through feces (coprophagy), allowing the body to digest the now broken down fiber as the food moves through the digestive system a second time. Not all hind-gut fermenters use the coprophagy system. Rats and rabbits are examples of hind-gut fermenters that use coprophagy, while horses are examples of hind-gut fermenters that don't.


Feces smells like dead animal?

The smell of feces is due to molecules produced during the breakdown of waste material by bacteria in the gut. This process generates compounds like ammonia, indole, and skatole that can create a strong, unpleasant odor. The similarity to the smell of a dead animal may be because both involve decomposition and the release of similar volatile compounds.

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