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Read the following passage carefully and answer the questions that follow it. Bile juice is stored in a sac called, gall bladder, located near its organ of secretion, liver. The gall bladder releases the bile juice into the small intestine whenever food reaches there. Though bile juice is devoid of any digestive enzymes, it is required for the digestion of fats. The fats cannot be digested easily because they are insoluble in water and are present as large globules. Bile juice breaks down big fat droplets into smaller droplets. These are then easily digested by the enzymes released from the pancreas. (a) Which organ secretes the bile juice? (b) Why is digestion of fats difficult as compared to that of other nutrients? (c) How does bile juice help in digestion of fat? (d) Where is the digestion of fat completed? (e) Does bile juice digest fat completely?

(a) Liver, the largest gland of the human body produces bile juice which gets stored in gall bladder and used... View Article

Following statements describe the five steps in animal nutrition. Read each statement and give one word for each statement. Write the terms that describe each process. (a) Transportation of absorbed food to different parts of the body and their utilisation. (b) Breaking of complex food substances into simpler and soluble substances. (c) Removal of undigested and unabsorbed solid residues of food from the body. (d) Taking food into the body. (e) Transport of digested and soluble food from the intestine to blood vessels.

The terms that describe each process are: a) Transportation of absorbed food to different parts of the body and its... View Article

Cellulose-rich food substances are a good source of roughage in human beings because (a) human beings do not have cellulose-digesting enzymes. (b) cellulose gets absorbed in the human blood and converts into fibres. (c) the cellulose-digesting bacteria convert cellulose into fibres. (d) cellulose breaks down into smaller components which are egested as roughage.

a)Human beings do not have cellulose-digesting enzymes Explanation Cellulose-rich food substances are a good source of roughage for human beings... View Article

Choose the correct order of terms that describes the process of nutrition in ruminants. (a) swallowing → partial digestion → chewing of cud → complete digestion (b) chewing of cud → swallowing → partial digestion → complete digestion (c) chewing of cud → swallowing → mixing with digestive juices → digestion (d) swallowing → chewing and mixing → partial digestion → complete digestion

a) Swallowing → Partial digestion → Chewing of cud → Complete digestion Explanation The digestion process in Ruminants begins by... View Article