Liver
I. makes the medium slightly acidic for the action of its enzyme.
II. Functions as a storehouse for blood and regulates blood volume.
III. Absorbs water from undigested food.
IV. Is the site of detoxification of different toxic substances.

The partially digested food coming from the stomach of a person enters a long and narrow organ A in his body. The organ A receives the secretions of two glands : liver and secretes a greensih yellow liquid B which is normally stored in the organ C. Pancreas secretes pancreatic juice which contains three digestive enzymes D, E and F. The intestinal juice completes the process of digestion of food. The inner wall of organ A has million of tiny finger-like projections G which help in the rapid absorption of digested food into blood stram. The undigested part of food then passes into wider tube H which absorbs most of the water from undigested food. The last part of tube H called I stores this undigested food (or waste) for some time. The undigested food is then passed out though opening J as faeces in the process known as K. (a) Name the organ A. (b) Name (i) liquid B, and (ii) organ C (c) What are the digestive enzymes D, E and F ? (d) Name (i) tube H (ii) part I (iii) opening J, and (iv) process K

Read the following statements regarding the absorption of nutrients. Choose the correct set of statements from the given below codes. I. Absorption of carbohydrates takes place in the stomach and jejunum part of intestine. II. The water soluble end products of food can reach the blood and lymph directly. III. Large intestine and buccal cavity do not function as the site of absorption. IV. Large intestine is the site of absorption of about 90% of the total water present in the hydrolysed food.

The following statements are based on the digestion and absorption of food. Select the correct and incorrect statements and choose an option accordingly from the codes given below. I. Active absorption of monosaccharides in the stomach and jejunum is carried out by facilitated transport. II. Most of the amino acids (above 95%) are absorbed in the duodenum and jejunum parts of the small intestine. III. Food is digested completely before absorption and is used by the body tissues. IV. Absorption of water from the small intestine is concerned with the absorption of salts and digested food in order to maintain an osmotic balance with the blood.

Name the parts of the alimentary canal where (i) water gets absorbed from undigested food. (ii) digested food gets absorbed. (iii) taste of the food is perceived. (iv) bile juice is produced.

Name the following : (i) Where food is completely digested ? (ii) Juice that contains trypsin enzyme. (iii) Who secretes bile juice ? (iv) That absorbs water from unabsorbed food. (v) Two secretions released by gastric glands.

Select the correct statement from the following . I. Bones support and protect softer tissue and organs II. Blood is a fluid connective tissue. III. Cartilage is a type of specialised muscle tissue. IV. The bone marrow found in some bones is the site of production of leucocytes.

Select the correct statement from the following . I. Bones support and protect softer tissue and organs II. Blood is a fluid connective tissue. III. Cartilage is a type of specialised muscle tissue. IV. The bone marrow found in some bones is the site of production of leucocytes.