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question_answer1)
Which of the following is the correct path of oxygen in humans during inhalation?
A)
Nostrils\[\to \]Nasal Cavity\[\to \]Pharynx\[\to \]Trachea\[\to \]Bronchi\[\to \]Bronchiole\[\to \] Alveoli done
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B)
Nostrils\[\to \]Nasal Cavity\[\to \]Trachea \[\to \]Pharynx\[\to \]Bronchi\[\to \]Bronchiole\[\to \] Alveoli done
clear
C)
Nostrils\[\to \]Nasal Cavity\[\to \]Pharynx \[\to \]Trachea \[\to \]Alveoli\[\to \]Bronchi\[\to \]Bronchiole done
clear
D)
Nostrils\[\to \]Nasal Cavity \[\to \]Pharynx\[\to \]Bronchi\[\to \]Trachea\[\to \]Bronchiole\[\to \] Alveoli done
clear
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question_answer2)
Match column I with column II and select the correct option from the codes given below.
Column I | Column II |
(a) Earthworm | (i) Pulmonary respiration |
(b) Human | (ii) Branchial respiration |
(c) Prawn | (iii) Tracheal respiration |
(d) Insects | (iv) Cutaneous respiration |
A)
(a) - (i), (b) - (ii), (c) - (iii), (d) - (iv) done
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B)
(a) - (iv), (b) - (i), (c) - (ii), (d) - (iii) done
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C)
(a) - (iii), (b) - (ii), (c) - (iv), (d) - (i) done
clear
D)
(a) - (iv), (b) - (ii), (c) - (i), (d) - (iii) done
clear
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question_answer3)
Consider the following statements and select the option which correctly identifies true (T) and false (F) ones.
(i) In cockroaches, air enters the body through spiracles. |
(ii) During heavy exercise, we get cramps in the legs due to accumulation of carbon dioxide. |
(iii) Normal range of breathing rate per minute in an average adult person at rest is 12-18. |
(iv) During exhalation, the ribs move upwards. |
A)
B)
C)
D)
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question_answer4)
Which of the following substances is/are present in a higher percentage in exhaled air than in inhaled air?
(i) Carbon dioxide | (ii) Oxygen |
(iii) Water vapour | (iv) Nitrogen |
A)
(i) only done
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B)
(i) and (iii) only done
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C)
(ii) and (iv) only done
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D)
(i), (ii), (iii) and (iv) done
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question_answer5)
Select the correct sequence of words to complete the given passage.
The pharynx actually has two apertures, one opening into the windpipe and the other into the ___. The aperture opening into the windpipe is guarded by ___. It closes the windpipe when you take ___.
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A)
Oesophagus, Uvula, Food done
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B)
Stomach, Epiglottis, Water done
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C)
Oesophagus, Epiglottis, Food done
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D)
Liver, Uvula, Water done
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question_answer6)
Study the given experimental set up. Which of the following statements holds true when the rubber sheet is pulled down?
(i) Air pressure inside the bell jar increases- |
(ii) The balloons inside jar expand. |
(iii) This is similar to expansion of lungs during inhalation. |
(iv) This is similar to contraction of lungs during exhalation. |
A)
(ii), (iii) and (iv) only done
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B)
(ii) and (iii) only done
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C)
(i) and (iv) only done
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D)
(i), (iii) and (iv) only done
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question_answer7)
Read the given passage and select the correct option for (i) - (iii).
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___(i)___ are present in the chest cavity. This cavity is surrounded by ___(ii)___ on the sides which form a cage like structure. A large muscular sheet called ___(iii)___ forms the floor of the chest cavity.
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A)
(i)-Lungs; (ii)-Ribs; (iii)-Diaphragm done
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B)
(i)-Diaphragm; (ii)-Ribs; (iii)-Lungs done
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C)
(i)-Bronchi; (ii)-Ribs; (iii)-Lungs done
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D)
(i)-Trachea; (ii)-Bronchi; (iii)-Lungs done
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question_answer8)
Read the given statements and select the correct option.
(i) In insects, circulating body fluids serve to distribute oxygen to tissues. |
(ii) Yeasts respire aerobically, therefore, they are used to make wine and beer. |
(iii) Bronchitis is the inflammation of bronchi which may be caused on exposure to air pollutants. |
(iv) In a healthy person, maximum capacity of lungs for inhaled air is 1500 mL. |
(v) Sneezing expels the foreign particles from the inhaled air. |
A)
Statements (i), (ii) and (iv) are incorrect, while statements (iii) and (v) are correct. done
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B)
Statements (i), (ii) and (iii) are incorrect, while statements (iv) and (v) are correct. done
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C)
Statement (ii) is incorrect, while statements (i), (iii), (iv) and (v) are correct. done
clear
D)
Statements (ii) and (v) are incorrect, while statements (i), (iii) and (iv) are correct. done
clear
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question_answer9)
The given graph shows changes in the concentration of lactic acid in the muscles of an athlete both during and after race. At what time did the athletes finish the race?
A)
2 minutes done
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B)
5 minutes done
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C)
4 minutes done
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D)
6 minutes done
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question_answer10)
A person put warm water in an aquarium, thinking that the fish would be more comfortable in it. However, the fish died. What can be the reason for this?
A)
The concentration of oxygen decreases in warm water. done
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B)
The concentration of carbon dioxide increases in warm water. done
clear
C)
Fish cannot bear the extreme heat of the water. done
clear
D)
All of these done
clear
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question_answer11)
When a person breathes in, what happens to the diaphragm and to the rib cage?
A)
B)
C)
D)
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question_answer12)
Farheen soaked some bean seeds in water overnight. Next morning she drained the water and kept the seeds moist till they started germinating. She boiled half of the seeds and then kept the germinating seeds in one thermos flask (X) and the 'boiled seeds in another thermos flask (Y).
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She covered the mouths of both flasks with moist cotton wool. Then she inserted thermometers in both flasks and kept the flasks as shown in the figure.
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What would be her observation?
A)
Temperature of flask X increases because it has photosynthesizing seeds. done
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B)
Temperature of flask X increases because it has respiring seeds. done
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C)
Temperature of flask Y increases because it has boiled seeds. done
clear
D)
Both (B) and (C) done
clear
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question_answer13)
Read the following statements and select the correct option.
Statement 1: Yeast is single-celled organisms which is used in baking and brewing industry. |
Statement 2: Yeast carry out anaerobic respiration, i.e., fermentation and release, ethyl alcohol and carbon dioxide. |
A)
Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1. done
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B)
Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1. done
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C)
Statement 1 is true but statement 2 is false. done
clear
D)
Both statements 1 and 2 are false. done
clear
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question_answer14)
Which of the following correctly represents the approximate composition of exhaled air by humans?
A)
B)
C)
D)
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question_answer15)
Read the given paragraph.
Sometimes, during strenuous activity such as long distance running, your body cannot get enough ___(i)___ to produce the required energy. To get the additional energy, ___(ii)___ respiration occurs within your muscle cells. In this process, there is partial breakdown of ___(iii)___ to produce ___(iv)___. the accumulation of which in the body causes ___(v)___. Q
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Complete the above paragraph by selecting the correct sequence of words.
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A)
Food, Aerobic, Starch, Uric acid, Uremia done
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B)
Carbon dioxide, Anaerobic, Protein, Lactic acid, Bone cramps done
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C)
Oxygen, Aerobic, Fructose, Hydrochloric acid, Muscular cramps done
clear
D)
Oxygen, Anaerobic, Glucose, Lactic acid, Muscular cramps done
clear
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question_answer16)
The given figure illustrates the changes in lung volume during the process of breathing.
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The change from Q to R indicates the
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A)
Movement of air out of the lungs done
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B)
Ribs move upward and outward done
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C)
Expansion of thoracic cavity done
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D)
Movement of diaphragm away from the lung. done
clear
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question_answer17)
Study the given flow chart about respiratory structures in different organisms. Identify the organisms P, Q, R and S and select the correct option.
A)
P-Cockroach, Q-Tadpole, R-Pigeon, S-Earthworm done
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B)
P-Grasshopper, Q-Fish, R-Frog, S-Amoeba done
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C)
P-Spider, Q-Frog, R-Crab, S-Paramecium done
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D)
P-Mynah, Q-Snake, R-Penguin, S-Leech done
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question_answer18)
Three test tubes are set up as shown. The indicator used here changes from red to yellow when exposed to increased levels of carbon dioxide. At the start of the experiment, the indicator in each test tube was red.
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What will be the colour of the indicator in each test tube after two hours?
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A)
B)
C)
D)
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question_answer19)
The given diagram shows a respirometer that is used to measure gaseous exchange in gram seeds. The apparatus is maintained at a constant temperature.
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Which of the following is correct regarding it?
(i) The gas pressure at X will fall as \[{{O}_{2}}\] is absorbed during respiration and\[C{{O}_{2}}\], is absorbed by potassium hydroxide solution. |
(ii) The fluid level at Y will fall to compensates the loss of pressure in X. |
(iii) The gas pressure at X will rise as 0;, is given out by seeds and \[C{{O}_{2}}\] is released by potassium hydroxide ;solution. |
(iv) The fluid level at Z will rise due to loss of pressure at X. |
A)
(i), (ii) and (iv) only done
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B)
(ii), (iii) and (iv) only done
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C)
(i), (iii) and (iv) only done
clear
D)
(i), (ii) and (iii) only done
clear
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question_answer20)
Rohan set up an experiment as shown in the figure. What will he observe after sometime?
A)
Lime water in test tube Y turns milky. done
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B)
Lime water in test tube Z turns milky. done
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C)
Potassium hydroxide solution in test tube X turns blue. done
clear
D)
Temperature in the flask will go down. done
clear
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