1 Mention the various steps involved in the process of nutrition.
2. How many teeth do we have in our mouth ? Classify them into various types. What kind of function do they
perform ?
3. Name the various organs which constitute the digestive system.
4. Draw a labelled diagram of alimentary canal.
5. How do the grass-eating animals digest cellulose ?
Answers
Explanation:
1)Five steps in the process of Nutrition in Animals
These are: Ingestion, Digestion, Absorption, Assimilation and Egestion
2)There are 4 types of teeth in the oral cavity: Incisors – The four front teeth in both the upper and lower jaws are called incisors. Their primary function is to cut food. The two incisors on either side of the midline are known as central incisors.
Incisors - Your incisors are eight teeth in the front center of your mouth (four on both bottom and top). These are typically the first adult teeth that a child will get, coming in when the child is between six and eight years old. Incisors are the teeth that you use to bite into your food.
Canines - Your canines are the next teeth that develop in your mouth. You have four of them and they are your sharpest teeth, used for tearing apart food.
Premolars - Premolars are used for tearing and crushing food. Unlike your incisors and canines, premolars have a flat biting surface. You have eight premolars in total.
Molars - Your molars are your largest teeth. Their function is similar to that of the premolars, to grind, tear, and crush food. Molars have a large flat biting surface which makes them perfect for this job.
3)The alimentary tract of the digestive system is composed of the mouth, pharynx, esophagus, stomach, small and large intestines, rectum and anus. Associated with the alimentary tract are the following accessory organs: salivary glands, liver, gallbladder, and pancreas.
4)This answer was pinned as a pic above
5)These animals have cellulose-digesting bacteria present in their stomach which helps to digest cellulose. They quickly swallow the grass and store it in the rumen, where the food gets partially digested and is termed cud. The cud returns to the mouth in small lumps and the animal chews it.
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