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Worksheet for Class 7 Science Chapter 10 Respiration in Organisms
Class 7 Science students should refer to the following printable worksheet in Pdf for Chapter 10 Respiration in Organisms in Class 7. This test paper with questions and answers for Class 7 will be very useful for exams and help you to score good marks
Class 7 Science Worksheet for Chapter 10 Respiration in Organisms
ACTIVITY 1- Do you know that how long can you hold breath.
ACTIVITY 2- To count your normal rate of breathing, breath in and breath out normally.
ACTIVITY 3- Let us perform an activity to know the mechanism of breathing.
ACTIVITY 4- What do we breath out?
Ans.(d) Skin
Ans.(b) Energy production
Ans.(c) Spiracles
Ans.(b) Lenticels
Ans.(c) Lactic acid
5- Very Short Answer Type Questions:
More question-
Answer the following questions
Q.1 Why do we get relief from cramps after a hot bath?
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Q.2 What is a diaphragm ?
_______________________________________________
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Q.3 Multiple choice questions
a. Cockroach respires through
(i) lungs
(ii) spiracles
(iii) tracheae
(iv) skin
b. Breathing is a part of the process
(i) Respiration
(ii) Digestion
(iii) Exhalation
(iv) Inhalation
Q.4 Why does an athlete breathe faster and deeper than usual after finishing the race.
Q.5 What are gills ?
Q.6 Why do we respire? Explain
Q1 Name the following:-
a) Inside the cells the breaking of food into water and carbon di oxide
b) Cockroach breathe by these structures
c) In fishes these are the breathing structures.
d) The products formed as a result of glucose breakdown
e) The type of respiration taking place in our muscles.
f) A large muscular sheet that forms the floor of the chest cavity
Q2 Fill in the blanks:-
i) If the food is broken with the help of oxygen , it is called as ------------.
ii) In earthworm exchange of gases takes place through----------
iii) A cell is the smallest ------- and ----------- unit.
iv) during breathing ----------- and ------------ take place alternately.
v) Leaves have tiny pores called ----------.
Q3 Why do all organisms respire?
Q4 What is the difference between aerobic and anaerobic respiration .Write equations for both.
Q5 Why are yeasts used to make wine and bear?
Q6 Why do we get muscle cramps after heavy exercise?
Q7 Draw and label a neat diagram of human respiratory system.
Q8 What would happen if a potted plant is over watered
Q9.How is respiration different from breathing?
Q 10 Aman is a talkative boy and keeps on talking even while eating food . His father dislikes this habit and asked him not to do so while eating . Can you explain the reason behind such an advice. What values are inculcated in Aman by his father
I. Fill in the blanks:
1. Breathing is a part of _________________.
2. Breathing involves the movement of the ___________ and ______________.
3. The food has ____________ which is released during respiration.
4. The accumulation of ___________ causes muscle cramps.
5. Yeast can survive in absence of oxygen, they are called ___________.
6. The taking in of air rich in oxygen into the body is called ____________.
7. _____________is the food which is broken down in respiration to release energy.
II. Write true or false:
1. Cellular respiration takes place in all the cells of living organisms.
2. All living organisms respire to get energy from food.
3. Our muscle cells do anaerobic respiration only when there is temporary deficiency of oxygen.
4. Breathing involves the movement of the diaphragm and the rib cage.
5. Whales and dolphins have gills for breathing.
6. Gills are projections of the skin.
7. The percentage of carbon dioxide is higher in inhaled air in comparision to exhaled air.
8. We often feel hungry after a physical exercise.
9. Increased physical activity reduces the rate of breathing.
10. Elephants, snakes and birds have lungs for breathing
III. Define the following:
1. Breathing .
2. Cellular respiration.
IV. Name the following:
1. Tiny pores on the surface of leaves for exchange of gases.
2. An organism with tracheal system.
3. Skeletal structures surrounding the chest cavity.
4. An aerobic organism .
5. The breathing organ of earthworm .
6. The openings through which we inhale.
7. The anaerobic organism used in production of beer and wine.
V. Answer the following :
1. Why do all animals respire? -2marks.
2. Describe the mechanism of breathing in humans. -5marks.
3. Describe the process of respiration in cockroach. -5marks.
VI. Draw and label:
1. The human respiratory system.
Write define from your book-
Short Question/Answers-
Question 1: What is 'oxidation'?
Answer : Oxidation is the breakdown of food (glucose) into carbon dioxide and water to release energy in the presence of oxygen.
Question 2: Why should we not overwater potted plants?
Answer : We should not over-water potted plants because water will replace the air present in the soil and roots won't be able to breathe.
Question 3: What do you mean by the 'stomatal apparatus'?
Answer : Stomatal apparatus refers to the stomata along with its nearby guard cells and other associated cells.
Question 4: What are the main organs of the respiratory system?
Answer : The main organs of the human respiratory system are nostrils, trachea, bronchi and lungs
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CBSE Class 7 Science Chapter 10 Respiration in Organisms Worksheet
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Worksheet for Science CBSE Class 7 Chapter 10 Respiration in Organisms
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Chapter 10 Respiration in Organisms worksheet Science CBSE Class 7
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Chapter 10 Respiration in Organisms CBSE Class 7 Science Worksheet
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Worksheet for CBSE Science Class 7 Chapter 10 Respiration in Organisms
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