class 7 assignment nutrition in animals

NUTRITION IN ANIMALS

CLASS 7

ASSIGNMENT

Multiple Choice Questions (MCQs)

Question 1:Given below from (i) to (iv) are some food items.
(i) Boiled and mashed potato
(ii) Glucose solution
(iii) A slice of bread
(iv) Mustard oil
Which of the above will give blue-black colour when tested with iodine?
(a) (i) and (ii)
(b) (i) and (iii)
(ii) and (iii)
(d) (iii) and (iv)

Question 2:Which of the following pair of teeth differ in structure but are similar in function?
(a) Canines and incisors
(b) Molars and premolars
(c) Incisors and molars
(d) Premolars and canines

Question 3:Read carefully the terms given below. Which of the following set is the correct combination of organs that do not carry out any digestive functions?
(a) Oesophagus, large Intestine, rectum
(b) Buccal cavity, oesophagus, rectum
(c) Buccal cavity, oesophagus, large intestine
(d) Small intestine, large intestine, rectum

Question 4:The swallowed food moves downwards in the alimentary canal because of
(a) force provided by the muscular tongue
(b) the flow of water taken with the food
(c) gravitational pull
(d) the contraction of muscles in the wall of foodpipe

Question 5:The acid present in the stomach
(a) kills the harmful bacteria that may enter along with the food
(b) protects the stomach lining from harmful substances
(c) digests starch into simpler sugars
(d) makes the medium alkaline

Question 6:The finger-like outgrowths of Amoeba helps to ingest food. However, the finger-like outgrowths of human intestine helps to
(a) digest the fatty food substances
(b) make the food soluble
(c) absorb the digested food
(d) absorb the undigested food

Question 7:Read the following statements with reference to the villi of small intestine.
(a) They have very thin walls.
(b) They have a network of thin and small blood vessels close to the surface.
(c) They have small pores through which food can easily pass.
(d) They are finger-like projections.
Identify those statements which enable the villi to absorb digested food.
Choose the correct option.
(a) (i), (ii) and (iv)
(b) (ii), (iii) and (iv)
(c) (iii) and (iv)
(d) (i) and (iv)

Question 8:The false feet of Amoeba are used for
(a) movement only
(b) capture of food only
(c) capture of food and movement
(d) exchange of gases only

Question 9:The enzymes present in the saliva convert
(a) fats into fatty acids and glycerol
(b) starch into simple sugars
(c) proteins into amino acids
(d) complex sugars into simple sugars

Question 10:Cud is the name given to the food of ruminants which is
(a) swallowed and undigested
(b) swallowed and partially digested
(c) properly chewed and partially digested ,
(d) properly chewed and completely digested

Very Short Answer Type Questions

Question 11:Name the parts of the alimentary canal where
(a) water gets absorbed from undigested food
(b) digested food gets absorbed
(c) taste of the food is perceived
(d) bile juice is produced

Question 12:Choose the odd one out from each group and give reasons.
(a) Liver, salivary gland, starch, gall bladder
(b) Stomach, liver, pancreas, salivary gland
(c) Tongue, absorption, taste, swallow
(d) Oesophagus, small intestine, large intestine, rectum

Question 13:Fill in the blanks with suitable words:
(a) The alimentary canal stretches from………. to………….
(b) Teeth are rooted in separate……. in between the………………………
(c) Digestion of food starts in………… and gets completed in……………
(d) ………. is the largest gland in the human body.

Question 14: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 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.

Question 15:Fill in the blanks using the words listed below.
Water, front, intestinal, salts, pseudopodia, back, vacuole
(a) The digestion of all food components is completed by the……………….
(b) Large intestine absorbs…….. and some……… from the undigested food.
(c) Tongue is attached at the………… floor of the mouth cavity and is free at the
(d) Amoeba pushes out around the food and traps it in a food