Class 7 Science - Chapter Nutrition in Animals NCERT Solutions | Match the items of Column I with suitabl
Match the items of Column I with suitable items in Column II
Column I Column II
(a) Salivary gland (i) Bile juice secretion
(b) Stomach (ii) Storage of undigested food
(c) Liver (iii) Saliva secretion
(d) Rectum (iv) Acid release
(e) Small intestine (v) Digestion is completed
(f ) Large intestine (vi) Absorption of water
(vii) Release of faeces
Column I Column II
(a) Salivary gland (iii) Saliva secretion
(b) Stomach (iv) Acid release
(c) Liver (i) Bile juice secretion
(d) Rectum (ii) Storage of undigested food
(e) Small intestine (v) Digestion is completed
(f ) Large intestine (vi) Absorption of water
1. Salivary glands: The salivary glands present in mammals are exocrine glands which produces saliva that contains salivary amylase enzyme through a system of ducts. Humans contain three paired major salivary glands (parotid, submandibular, and sublingual), a pair of seromucous tubarial glands and as well as various minor salivary glands.
2. Stomach: Stomach is a muscular organ located on the left side of the upper abdomen and it stomach receives food from the oesophagus through the buccal cavity. As food reaches the end of the oesophagus, it enters to the stomach which secretes acid and various enzymes that helps in the digestion of food.
3. Liver: The liver is the largest gland that only found in vertebrates which detoxifies various metabolites, synthesizes proteins and produces biochemical substances which are necessary for digestion and growth. In humans, it is located in the right upper part of the abdomen.
4. Rectum: The rectum is a chamber that starts at the end of the large intestine, immediately continues the sigmoid colon, and ends at the anus. The rectum is empty because stool is stored higher in the descending colon.
5. Small Intestine: The small intestine is an organ in gastrointestinal tract where most of the end of absorption of nutrients and minerals from food takes place. It is present between the stomach and large intestine, and it receives bile and pancreatic juice through the pancreatic duct for the digestion of complex substances.
6. Large Intestine: The large intestine is shorter than the small intestine and is the last part of the gastrointestinal tract and of the digestive system in vertebrates. Water is absorbed in the large intestine and the remaining waste material is stored as faeces before the elimination or by defecation.
7. Anus: The anus is the opening where the gastrointestinal tract ends and exits from the body. The anus starts at the bottom part of the rectum and is the last portion of the colon i.e. large intestine. The anorectal line helps in the separation of the anus from the rectum.
More Questions From Class 7 Science - Chapter Nutrition in Animals
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Write one similarity and one difference between the nutrition in amoeba and human beings.
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Label Fig. 2.11 of the digestive system.
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Can we survive only on raw, leafy vegetables/grass? Discuss.
- Q:-
Which part of the digestive canal is involved in:
(i) absorption of food ________________.
(ii) chewing of food ________________.
(iii) killing of bacteria ________________.
(iv) complete digestion of food ________________.
(v) formation of faeces ________________. - Q:-
Name the type of carbohydrate that can be digested by ruminants but not by humans. Give the reason also.
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Why do we get instant energy from glucose?
- Q:-
Match the items of Column I with those given in Column II:
Column I Column II
Food components Product(s) of digestion
Carbohydrates Fatty acids and glycerol
Proteins Sugar
Fats Amino acids - Q:-
Where is the bile produced? Which component of the food does it help to digest?
- Q:-
Tick (✓) mark the correct answer in each of the following:
(a) Fat is completely digested in the
(i) stomach (ii) mouth (iii) small intestine (iv) large intestine(b) Water from the undigested food is absorbed mainly in the
(i) stomach (ii) foodpipe (iii) small intestine (iv) large intestine - Q:-
Fill in the blanks:
(a) The main steps of nutrition in humans are __________, __________, __________, _________ and __________.
(b) The largest gland in the human body is __________.
(c) The stomach releases hydrochloric acid and ___________ juices which act on food.
(d) The inner wall of the small intestine has many finger-like outgrowths called _________.
(e) Amoeba digests its food in the ____________ .
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State similarities and differences between the laboratory thermometer and the clinical thermometer.
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State differences between acids and bases.
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Classify the changes involved in the following processes as physical or chemical changes:
(a) Photosynthesis
(b) Dissolving sugar in water
(c) Burning of coal
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(f ) Digestion of food - Q:-
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Fill the missing word in the blank spaces in the following statements:
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Match structures given in Column I with functions given in Column II.
Column I Column II
(i) Stomata (a) Absorption of water
(ii) Xylem (b) Transpiration
(iii) Root hairs (c) Transport of food
(iv) Phloem (d) Transport of water
(e) Synthesis of carbohydrates - Q:-
Fill in the blanks:
(a) Production of new individuals from the vegetative part of parent is called_____________.
(b) A flower may have either male or female reproductive parts. Such a flower is called_____________.
(c) The transfer of pollen grains from the anther to the stigma of the same or of another flower of the same kind is known as _____________.
(d) The fusion of male and female gametes is termed as _____________.
(e) Seed dispersal takes place by means of _____________, _____________ and _____________. - Q:-
Classify the following as motion along a straight line, circular or oscillatory motion:
(i) Motion of your hands while running.
(ii) Motion of a horse pulling a cart on a straight road.
(iii) Motion of a child in a merry-go-round.
(iv) Motion of a child on a see-saw.
(v) Motion of the hammer of an electric bell.
(vi) Motion of a train on a straight bridge.
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