(a) Why is nutrition necessary for the human body? (b) what causes movement of food inside the alimentary canal? (c) why is small intestine in herbivores longer than in carnivores ? (d) what will happen if mucus is not secreted by the gastric glands ?

The small intestine in herbivores is longer than that in carnivores. Why ?

(a) Why is small intestine in herbivores longer than in carnivores ? (b) What causes movement of food inside the alimentary canal?

(a) Why is small intestine in herbivores longer than in carnivores ? (b) What causes movement of food inside the alimentary canal?

Why does herbivores have longer, small intestine than carnivores ?

Name the tissue responsible for the Following functions in our body : (a) Storage of fat , (b) Movement of limbs, (c) Movement of food in the alimentary canal (d) Act as barrier to keep different body systems separate.

The gland X which is located just below the brain in the human head secretes a chemical substance Y which controls the development of bones and muscles in the body of a person. Secretion of too little of substance Y as well as the secretion of too much of substance Y by the gland X lead to abnormal development of the body of a person. (a) Name the gland X. (b) What is the chemical substance Y? (c) What happens if too little of substance Y is secreted? (d) What happens if too much of substance Y is secreted? (e) Name the system of glands in the human body of which gland X is a part.

What is wrong about gastric glands and their secretion?(A) Oxyntic cells secrete HCl and Castle's intrinsic factor (B) Hormone gastrin is secreted by gastrin cells,also called G-cells (C) Peptic cells secrete pepsinogen which converts proteins into peptones and proteoses (D) Small amount of lipase is also produced by the gastric glands

Describe the following processes in the body. (a) Coagulation of milk in alimentary canal. (b) Digestion of fats in the intestine. (c ) Digestion of starch in the alimentary canal. (d) Role of bile salts in the digestion and absorption of fats. (e ) Microbial digestion of cellulose in the herbivore alimentary canal.

(a) Draw a labelled diagram of the human digestive system. With the help of this diagram, describe the process of digestion of food in man (humans). (b) Describe one way in which the small intestine is adapted for the absorption of digested food. (c) What is the special name of the contraction and expansion movement which pushes the food further in our digestive tract (or alimentary canal) ?

The gland A is attached to the wind pipe in the human body. The gland A makes and secretes a hormone B which controls the metabolism of carbohydrates, fats and proteins in the body. The non-metal element C is necessary for the formation of hormone B. The deficiency of C in the diet can cause a deficiency of hormone B in the body leading to a disease D in which the neck of a person appears to be swollen. People are advised to use salt e in cooking food so as to avoid disease D. (a) Name (i) gland A, and (ii) hormone B. (b) What is the element C? (c) Name one type of food which can provide sufficient C in the diet of a person. (d) Name (i) disease D, and (ii) salt E.