science - nutrition in animals

Class 7 - Science

Nutrition in Animals

Q&A
Question:

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 ___________ .

Answer:

(a) ingestion, digestion, absorption, assimilation, egestion
(b) liver (c) digestive (d) villi (e) food vacuole.



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Questions and Answers


Nutrition in Animals - Questions
1.

Tick (S) mark the correct answer in each of the following:
(a) Fat is completely digested in the
(i) stomach (ii) mouth (in) 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


Answer
2.

Label Fig. 2.11 of the digestive system (as given in the NCERT Textbook Exercise)

ncert-solutions-class-7-science-chapter-2-nutrition-in-animals-04


Answer
3.

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 ________ .


Answer
4.

What are villi? What is their location and function?


Answer
5.

Name the type of carbohydrate that can be digested by ruminants but not by humans. Give the reason also.


Answer
6.

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 sometime. (T/F)


Answer
7.

Can we survive only on raw, leafy vegetables/grass? Discuss.


Answer
8.

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 ___________ .


Answer
9.

Match the items of Column I with suitable items in Column II.
.ncert-solutions-class-7-science-chapter-2-nutrition-in-animals-02


Answer
10.

Where is the bile produced? Which component of the food does it help to digest?


Answer
11.

Write one similarity and one difference between the nutrition in amoeba and human beings.


Answer
12.

Q.4.Match the items of column I with those given in column II:


Answer
13.

Why do we get instant energy from glucose?


Answer
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