The carbohydrates) and liver (bile juice secreted by liver is stored in gall

Support your Answer: When a person passes out watery stools frequently, the disease is called diarrhoea. living things eat food for energy. several hours.

(Scraping, chewing, siphoning, capturing and swallowing, sponging, sucking, etc.). Similarity: Human and amoeba both need digestive juices for the digestion of food. They are only present in the permanent set of teeth and are 6 in each jaw. Answer:

It plays an important role in the digestion of fats. NCERT Solutions for Class 7 Science, Chapter 2 – Nutrition in Animals is available here. The finger-like projection presents on the inner lining of small intestine is called Answer:

(c) What are the values shown by Rishi? Describe alimentary canal briefly. (i) They have very thin walls. Alimentary canal is different from digestive system. 10. Following statements describe the five steps in animal nutrition. The nutrients from food are absorbed in the body and used Answer: Boojho and Paheli were eating their food hurriedly so that they could go out and play during the recess. Name the secretions of stomach which digest food.

Question 18.

Question 26.

The undigested faecal matter is removed through the anus by the process called egestion. Question 11. (d) Small intestine, because it carriers the process of digestion and rest are not involved in digestion. The purpose of the large intestine is to absorb water and salts from the material that has not been digested as food, and get rid of any waste products left over.

(c) Tongue, because rest all are digestive processes and tongue is a part of digestive system.

What will happen if mucus is not secreted by the gastric glands? food further into paste. The shape of stomach is like flattened U-shaped. It should be given to a patient suffering from diarrhoea at a regular interval. In the small intestine, 2.

It is digested by ruminants but not by humans because enzymes which digest cellulose are not present in humans.

Match the Column I with Column II. (a) human beings do not have cellulose: digesting enzymes, Question 13.

Name the three digestive glands in our body.

Answer: Write the terms that describe each process.

(d) Where is the digestion of fat completed? (c) proteins into amino acids The small intestine is about 7.5 metre long It is accommodated in a coiled form inside our body. Question 20.

The three digestive glands are.

(a) fats into fatty acids and glycerol True.

Alimentary canal is the tube running from mouth to anus of human and animals here digestion and absorption of food take place. In test tube 6, colour of iodine will not change because of digestion of starch into sugars by the action of saliva in our mouth. Justify. Answer: Alimentary canal, Question 7.

(d) Taking food into the body.

Answer: This process is called rumination. Glucose, Question 3. Few pictures have been taken from different sources, If any Graphic / Image is offensive or under any copyrights then please email us to get it removed.

Answer:

If yes, could you identify which type of teeth showed the difference? Drink 6 – 8 glasses of water. Question 30. The food is not chewed completely.

Answer: Answer: Question 6.
(a) digest the fatty food substances

(i) One should rinse and clean its teeth thoroughly after every Pulp cavity meal. (d) exchange of gases only Question 7.

Question 9. stomach is a sac-like organ with strong muscular walls.It can store food for

After surgical removal of gall bladder, ‘A’ would face problems in digestion of fat and fatty substances when consumed in bulk. – Tongue is a muscular organ that helps in Explain how assimilation is different from absorption. Esophagus - Esophagus is a muscular tube from the mouth

Alimentary canal is a long, muscular coiled tube. Mark ‘T’ if the statement is true and ‘F’ if it is false: (a) Digestion of starch starts in the stomach.

Question 29. Question 3.

Answer: (c) The organ that releases digestive juice into the small intestine. 5.

our bodies is called. He also explained him the proper scientific reason behind it. Answer: Jaya returned from school and found that grandmother was scolding her maid, Rani as she did not come yesterday. Complete the following table, from the options given below:

If these teeth fall down no new teeth arises on its place.

Download Chapter 2 (Nutrition in Animals) of Class 7 Science NCERT Textbook in PDF Format, This website uses cookie or similar technologies, to enhance your browsing experience and provide personalised recommendations. Why do we get instant energy from glucose? Amoeba is a microscopic, single celled animal.

Mucus protects the inner lining of stomach form the action of hydrochloric acid and enzyme pepsin. No, we cannot survive for a very long time by only eating leafy and raw vegetables/grass. Get NCERT Solutions for Class 7 Science, Chapter 2 – Nutrition in Animals. [Value Based Question]

Most of the nutrients

Ruminants such as cows and buffaloes swallow their food hurriedly and store it in a part of the stomach called rumen.

(T/F), (b) The tongue helps in mixing food with saliva. Question 22.

(c) pancreas Read the following passage carefully and answer the questions that follow it. Much use of cold drink should also be avoided.”, Question 2.

11. (a) Transportation of absorbed food to different parts of body and their utilisation.

(c) gravitational pull This solution is called ORS. The enzymes present in the saliva convert [NCERT Exemplar] Answer: Question 25. Write one similarity and one difference between the nutrition in amoeba and human beings. Her mother smiled and explained her the importance of this solution.

(a) The cutting and biting teeth as A

Question 15. In large intestine, undigested food enters where water is absorbed from it. The inner wall of the small intestine has many finger-like outgrowths called ___villi___. Salivary gland secretes

They grow during infancy, i.e. is the process of taking food inside the body. taste buds such as sweet, sour, salty and bitter. (d) complex sugars into simple sugars Water is absorbed here. The the body to absorb.

Question 4. The false feet of Amoeba are used for [NCERT Exemplar]

Question 6.

We need a balance diet to live long and healthy life.

Answer: (d) liver. Where is the bile produced? Each villus has a network of thin and small blood vessels close to its surface. Later, this partially digested food is returned to the buccal cavity of the animals in small lumps and animal chews it to complete the process of digestion. Question 4.

Nutrition in Animals Class 7 Science Extra Questions Short Answer Type. Choose the odd one out from each group and give reasons.

(b) make the food soluble

Question 5. Answer: It creates an acidic environment which facilitates the action. Is there any role of liver in digestion of fats?

The two pseudopodia join around the food particle and trap the food particle with a little water forming vacuole around food, thus the food gets trapped. (c) absorb the digested food

Cud chewing animals are called …….. The fats cannot be digested easily because they are insoluble in water and are present as large globules. Answer: It is moved between two teeth to take out Pancreas secretes pancreatic juices which act on carbohydrate, fats and proteins and change them into simpler compounds.

It is also known as digestive tract.

This partially digested food or grass present in the rumen of cow is called cud.

[HOTS] The swallowed food moves downwards in the alimentary canal because of [NCERT Exemplar]

Question 21. Dentine protects which part of human teeth? Answer:

Join Now! Answer: (b) Name the solution of sugar and salt in water. The bile juice is produced by the liver. – The (c) (iii) and (iv) Large intestine – From small intestine undigested food mixes with juice secreted by pancreas (helps in digestion of Oesophagus is also called as foodpipe. The maid told that his son was passing watery stools frequently that’s why she didn’t come. Digestion in Grass-Eating Animals. (a) swallowed and undigested The food passes from oral cavity and finally the undigested food is defecated through anus. False, canines are used for piercing and tearing the food. Record your observations in the table below: [NCERT Exemplar].


What is the total number of teeth in an adult human?

(iv) They are finger-like projections. The villi increase the surface area for absorption of the digested food.

The stomach releases hydrochloric acid and ___digestive___ juices which act on food.

taste buds such as sweet, sour, salty and bitter. Give reason. Answer: This is called tooth decay. All the questions of this chapter are important for the preparation CBSE Class 7 Science exam conducted in various CBSE Schools.