Determine the correct sequence of the process of nutrition in a human being .
A. Mastication of food and formation of bolus
B. Production of chyme
C. Deglutition
D. Passage of unabsorbed ‌, undigested substances to the caecum
E. Digestion in the most coiled part of alimentary canal

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

(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) ?

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.

Read the following statements. (A) Their mode of nutrition is holozoic - by ingestion of food (B) Higher forms show elaborate sensory and neuromotor mechanism (C ) Most of them are capable of locomotion (D) The sexual reproduction is by copulation of male and female (E ) They digest their food in an internal cavity Here we are talking about :

Given below are assertion and reason. Point out if both are correct with reason being correct explanation (A), both true but reason is not correct explanation (B), assertion true but reason is wrong (C), both are wrong (D). Assertion. Thick layers of muscles are present in the wall of alimentary canal. Reason. These muscles help in mixing of food materials with enzymes coming from glands of alimentary canal.Â

Given below are assertion and reason. Point out if both are correct with reason being correct explanation (A), both true but reason is not correct explanation (B), assertion true but reason is wrong (C), both are wrong (D). Assertion. Thick layers of muscles are present in the wall of alimentary canal. Reason. These muscles help in mixing of food materials with enzymes coming from glands of alimentary canal.Â

Given below are assertion and reason. Point out if both are correct with reason being correct explanation (A), both true but reason is not correct explanation (B), assertion true but reason is wrong (C), both are wrong (D). Assertion. Thick layers of muscles are present in the wall of alimentary canal. Reason. These muscles help in mixing of food materials with enzymes coming from glands of alimentary canal.Â

Select the correct sequence of events in a sewage treatment process. A. Passages of primary effluent into large aeration tanks for mechanical agitation and pumping or air . B. Passage of effluent into the settings tank and formation of activated sludge. C. Physical removal of particles thought filtration and sedimentation . D. Release of effluent from the secondary temperature plant into natural water bodies. E. Growth of useful aerobic microbes into flocs which significantly reduce the BOD.

Following statements describe the five steps in animal nutrition. Read each statement and give one word for each statement. Write the terms that describes each process. (a) Transportation of absorbed food to different parts of body and their utillisation. (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.