NCERT Solutions Class 7 Science Chapter 2 – Free PDF Download
NCERT Solutions for Class 7 Science Chapter 2 – Nutrition in Animals is important as it will teach you many new topics that are pivotal in framing your career. NCERT Solutions for Class 7 Science Chapter 2 is available in PDF format, and students can freely download it from our website, or they can view the PDF on the website. They can later use the PDF as study material. Students can check out some of the questions below. These NCERT Solutions are really helpful to get a better understanding of concepts of nutrition.
Download Exclusively Curated Chapter Notes for Class 7 Science Chapter – 2 Nutrition in Animals
Download Most Important Questions for Class 7 Science Chapter – 2 Nutrition in Animals
Making use of BYJU’S NCERT Solutions for Class 7 Science helps students to get acquainted with Chapter 2 (Nutrition in Animals) in a much better way with ease. All these NCERT Solutions have stepwise explanations, which aim at a student’s better understanding. These topics need to be understood clearly, and scoring well in exams is also very important. As such, students are advised to solve NCERT questions if they want to get better knowledge and clear the exams with flying colours.
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Exercise Questions
1. 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 ____________ .
Solution:
(a) The main steps of nutrition in humans are ingestion, digestion, absorption, assimilation and egestion.
(b) The largest gland in the human body is liver.
(c) The stomach releases hydrochloric acid and digestive juices which act on food.
(d) The inner wall of the small intestine has many finger-like outgrowths called villi.
(e) Amoeba digests its food in the food vacuole.
2.Mark ‘T’ if the statement is true and ‘F’ if it is false:
(a) Digestion of starch starts in the stomach. (T/F)
(b) The tongue helps in mixing food with saliva. (T/F)
(c) The gall bladder temporarily stores bile. (T/F)
(d) The ruminants bring back swallowed grass into their mouth and chew it for some time. (T/F)
Solution:
a) F
b) T
c) T
d) T
3. 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) food pipe (iii) small intestine (iv) large intestine
Solution:
a) (iii) small intestine
b) (iv) large intestine
4. 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 |
Solution:
| Column- I | Column- II |
| Food components | Product(s) of digestion |
| Carbohydrates | Sugar |
| Proteins | Amino acids |
| Fats | Fatty acids and glycerol |
5. What are villi? What is their location and function?
Solution:
Villi are finger-like projections or outgrowth. They are present in the small intestine of our digestive system. The villi increase the surface area for absorption of the digested food.
6. Where is the bile produced? Which component of the food does it help to digest?
Solution:
Bile juice is produced in the liver, and it helps in the digestion of fats by breaking large fat globules into smaller ones.
7. Name the type of carbohydrate that can be digested by ruminants but not by humans. Give the reason also.
Solution:
Cellulose is the carbohydrate that can be digested by ruminants but not by humans because humans lack cellulase enzyme required to digest the cellulose.
8. Why do we get instant energy from glucose?
Solution:
Glucose is a simple sugar which is easily absorbed into the blood whereas other carbohydrates are first broken down into glucose and then absorbed; hence, glucose gives instant energy.
9. 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 ________________.
Solution:
i) Small intestine
ii) Buccal cavity
iii)Stomach
iv) Small intestine
v) Large Intestine
10. Write one similarity and one difference between nutrition in amoeba and human beings.
Solution:
Similarity: Both amoeba and human beings follow the holozoic type of nutrition.
Difference:
Humans intake food through buccal cavity. In amoeba food is ingested through pseudopodia.
11. 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 |
Solution:
| 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 |
12. Label Fig. 2.11 of the digestive system.
Solution:
13. Can we survive only on raw, leafy vegetables/grass? Discuss.
Solution:
No, we cannot survive only on raw, leafy vegetables because they mainly consist of Cellulose which cannot be digested by us due to lack of cellulose-digesting enzyme in our body.
Important topics covered in NCERT Solutions for Class 7 Science Chapter 2 – Nutrition in Animals
- Ways of food intake
- Human digestion
- Digestion in herbivores
- Nutrition and digestion in Amoeba
Students can utilise the NCERT Solutions for Class 7 Science Chapter 2 for any quick references to comprehend these and other complex topics.
Class 7 Science NCERT Solutions Chapter 2 – Nutrition in Animals
The NCERT Solutions that are given here are framed to help students learn and practise questions related to animal nutrition. Besides, this chapter introduces students to important topics like nutrition and digestion in humans and animals as well as in simple organisms, the process of nutrition, digestive system, etc. The NCERT Solutions Class 7 Science for Nutrition in Animals also contains different examples and solved exercises that students can go through and use to prepare for exams.
Frequently Asked Questions on NCERT Solutions for Class 7 Science Chapter 2
Explain the location and function of villi from Chapter 2 of NCERT Solutions for Class 7 Science.
In Chapter 2 of NCERT Solutions for Class 7 Science, which component of food does the bile help to digest?
What are the key features of NCERT Solutions for Class 7 Science Chapter 2?
1. Illustrative explanations are provided in the solutions to improve conceptual knowledge among students.
2. Simple and understandable language is used by the faculty to help students grasp the concepts effortlessly.
3. The solutions PDF are present with a free download option.
4. It is one of the best study materials which provides in-depth knowledge of the chapter to both students and faculty.
5. The concepts are explained in a systematic manner which enables students to understand their applications in their daily lives.
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