Question

Which animal out of the following has the longest food-pipe?
(a) Giraffe
(b) Camel
(c) Whale
(d) Yak

Answer 1

It is a mammal that is the tallest living terrestrial animal. They are long-necked with the longest legs out of all the mammals. These long legs help them to run faster and are generally found in the grasslands.

Complete answer:
An alimentary canal is a long tube through which the food is taken into the body and gets digested. It is a long passage of the digestive tract which starts from the mouth to the anus. It is the longest in length in the case of the giraffe that is around 6.5 feet long. It performs the process of digestion which is the breaking down of large food particles into the smaller ones with the water-soluble particle that can be easily absorbed by the blood plasma.
-The esophagus is a tubular-shaped organ that joins the mouth to the stomach. The chewed and broken food once swallowed passes through the esophagus. Peristalsis movement occurs in the smooth muscles of the esophagus that helps is pushing the food toward the stomach. The motions of the peristaltic wave are unidirectional, that is; it will move the food in only one direction - from mouth to stomach, and not a reverse movement, either that in the case of the vomit reflex.
The uptake and digestion of food with the process of elimination takes place inside the alimentary canal and it plays an important role in the human digestion and is termed the digestive tract. It consists of the mouth or the oral cavity, pharynx, esophagus, stomach, small intestine, and large intestine followed by the anus. The first part of the digestive system includes the mouth through which the food is ingested and the food is passed through the common passage for air and food which is the pharynx that consists of epiglottis which prevents the entry of food into the windpipe. The stomach is positioned at the upper left part of the abdominal cavity which is divided into four regions that include the cardiac part, fundus, body, and pyloric sphincter. It is followed by the longest part of the alimentary canal which is the small intestine that comprises three parts which are the duodenum, jejunum, and ileum. The large intestine constitutes three parts which is the caecum, colon, and rectum which opens into the anus.

So, the correct answer is ‘Giraffe’.

Note:
The length of the human alimentary canal is 6-9 meters. The length of the food-pipe in the case of the camel is about 142 cm. The esophagus in the whale is about 15-25 cm while in the case of yak it is around 25 cm long. The length of the esophagus varies depending upon the nature of habit of various living organisms.