CBSE Science Class 7
Respiration in Organisms
Respiration in Organisms - Chapter Wise CBSE Solved Question and Answer Based On NCERT
Very Short Q&A:
Q1: Bacteria and fungi can respire ___________________.
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Q2: Name a single celled fungus and respires anaerobically to produce alcohol.
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Q3: Anaerobic respiration takes place in our skeletal muscles and produce ________
- methyl alcohol
- ethyl alcohol
- glucose
- none of these
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Q4: What is anaerobic respiration?
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Ans:
The respiration which takes place in the absence of oxygen is called anaerobic respiration.
Q5: 5. Name the gas which is used by white blood cells to kill the invading bacteria.
(a) Oxygen (b) Carbon dioxide (c)Nitrogen (d) Chlorine
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Q6: What is the normal range of breathing rate per minute in an adult person?
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Q7: During heavy exercise we get cramps in the legs due to the accumulation of ______________
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Q8: What is respiration?Each layer of soil differs in feel (texture), colour, depth and _______________.
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Ans:
The process of oxidation of food to release energy from absorb food in living cells is called respiration.
Q9: In cockroach air enters the body through_________________.
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Q10: What will be the direction of diaphragm as we breathe in, and ribs move up or expand?
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Q11: Where is diaphragm located in the human body?
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Q12: Each bronchus enters the lungs and divides into small tubes bronchioles which end up in air sacs called alveoli. True/ False.
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Q13: The walls of alveoli are supplied with thin blood vessels called________
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Q14: Name the respiratory organ of frogs.
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Q15: Name the respiratory organ of earthworm.
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Q16: How does exchange of gases take place in unicellular and smaller multicellular animals?
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Q17: How does exchange of gases take place in insects?
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Ans:
Exchange of gases takes place in insect through spiracles into trachea.
Q18: During exhalation the ribs
- move down and inwards
- move upwards
- move outwards
- do not move at all
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Ans:
move down and inwards
Q19: Name the respiratory organ of birds.
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Q20: Name the tiny pores present in the leaves of the plants for exchange of gases.
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Q21: What is the end product of anaerobic respiration?
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Ans:
C02, alcohol and energy.
Q22: Name the chemical used to test the presence of CO2 in exhaled air.
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Q23: Yeast respire an aerobically to produce_____________.
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Q24: Chest cavity is surrounded by _____________ of ribs.
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Q25: State the name of wind pipe.
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Q26: Spiracle is the muscular sheet which separates the abdomen from the chest cavity. True/ False.
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Q27: What is the percentage of oxygen in the inhaled air?
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Q28: Breathing is a part of ________
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Q29: What is the site of cellular respiration?
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Q30: Lenticels are present in which plant part for breathing
- Root
- Stem
- Leaves
- None of these.
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Q31: During heavy exercise the breathing rate of a person slows down. True/ False.
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Q32: The size of the chest cavity increases during inhalation. True/ False.
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Q33: Which of the two is usually oxidised during respiration? Carbohydrate or fats?
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Q34: Which product in formed after anaerobic respiration in calf muscles?
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Q35: What is breathing rate?
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Ans:
The number of times a person breathes in a minute is termed as the breathing rate.
Q36: Ravi is sleeping; his rate of breathing will be slowest or higher?
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Ans:
Rate of breathing will be slow.
Q37: Swati is doing exercise; his rate of breathing will be slowest or higher?
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Q38: Smoking damages _______________.
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Q39: What is the percentage of carbon dioxide in inhaled air?
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Q40: Gills in fishes are well supplied with blood vessels for exchange of gases. True/ False.
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