Home
Class 12
BIOLOGY
The number of RBCs in man increases if h...

The number of RBCs in man increases if he lives at a higher altitude because
1. there is less oxygen in mountains
2. there is more oxygen at the mountains
3. there are no germs in the air in mountain
4. more heat is required to be produced in the body for keeping warm

A

there is less oxygen in mountains

B

there is more oxygen at the mountains

C

there are no germs in the sair in mountain

D

more heat is required to be produced in the body for keeping warm

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • BODY FLUIDS AND CIRCULATION

    TRUEMAN BIOLOGY|Exercise Multiple Choice Questions|198 Videos

  • CELL CYCLE AND CELL DIVISION

    TRUEMAN BIOLOGY|Exercise MULTIPLE CHOICE QUESTIONS|158 Videos

Similar Questions

Explore conceptually related problems

1cm^3 of hydrogen gas and 4cm^3 of oxygen gas are both at STP. Which one contains more number of molecules?

Read the following statement and select the correct one 1. oxyhaemoglobin of erythrocytes is alkaline 2. in a healthy person the haemoglobin content is more than 25 g per 100 ml 3. in lungs the oxygen form the alveolus reaches the blood though active transport 4. the h^(+) released from carbonic acid combines with haemoglobin to form haemoglobinic acid

A man travels a distance in 3 hours with a uniform velocity . If the distance be 2 km more and his velocity be 2 km less per hour then he will take time 1 hour more to travel the new distance . Find the uniform velocity of the man.

In order to put some oranges into some boxes , Sankarbabu found that had he been put 20 oranges more into each box, the number of boxes required would be 3 less than the original number . Again , had he been put 5 orange less into each box, the number of boxes would be 1 more than the original number . Find the number of oranges and the number of boxes which Sankarbabu possessed.

H, He^(+), Li^(2+) are examples of atoms or ions with one electron each . The energy of such atoms when in the n-th energy state (according to Bohr,s theory , n=1,2,3…. =principal quantum number ) is E_n =(-13.6 Z^2)/(n^2) eV (1 eV =1.6xx10^(-19)J) . For the ground state ,n=1 . in order to raise the atom from the ground state to n=f , the suitable incident light should have a wavelength given by lambda=(hc)/(E_f-E_1) . But the atom cannot stay permanently in the f-energy state, ultimately , it comes to the ground state by radiating the extra energy , E_f-E_1 as electromagnetic radiation . The electron of the atom comes from n=f to n=1 in one or more steps using the permitted energy levels . As a result there is a possibility of emission of radiation with more than one wavelength from the atom. Planck's constant =6.63 xx10^(-34)J*s and velocity of light c=3xx10^(8)m*s^(-1) . The wavelength of radiation emitted for the transition of the electron of He^+ ion from n=4 to n=2 is

If a person living at sea level migrates to about 8000 feet high hill his blood after about fifteen days will mainly 1. have fewer wbcs 2. have more plasma 3. have increase in volume of serum 4. have greater number of rbcs and more haemoglobin

In man , the number of R.B.C. per cubic mm of blood is (a) 1 to 3 millions (b) 5 to 5.4 millions (c) Less than one milliion but more than 50 thousand (d) Less than 50 thousand

Choose the number of correct statement(s) form the following: ist ionization potential of B is higher than that of Be electron affinity of O is higher than that of S [Ar] 4s^23d^3 is the electronic configuration of Mn^(+2) Iind ionisation potential of Na>ist ionisation potential of Na 1st ionisation potential of N>IInd ionisation potential of N electronegativity of Cl>electronegativity of F C rarr C^+2 change is called IInd ionisation potential of carbon energy is required to convert He rarr He^- conversion of o rarr o^2 exothermic

An organic compound contains C, H and O as its constituents. On heating in absence of air, 3.10g of this compound, produces 1.24g of carbon. But if 0.5 g of the compound is burnt in presence of air, 0.3 g of H_(2)O is formed. 0.05 gram-mole of the compound contains 4.8g of oxygen. what is the molecular formula off the compound?

Find the numbers less than 1000 and divisible by 5 which can be formed with the digits 0,1,2,3,4,5,6,7,8,9 each digit not occurring more than once in each number .

TRUEMAN BIOLOGY-BREATHING AND EXCHANGE OF GASES -MULTIPLE CHOICE QUESTIONS
  1. Rate of breathing is maximally affected by

    Text Solution

    |

  2. The impulse for voluntary muscles for forced breathing starts in 1. m...

    Text Solution

    |

  3. The number of RBCs in man increases if he lives at a higher altitude b...

    Text Solution

    |

  4. If a person living at sea level migrates to about 8000 feet high hill ...

    Text Solution

    |

  5. When some food particle enters the windpipe instead of oesphagus it is...

    Text Solution

    |

  6. Lack of breathing is

    Text Solution

    |

  7. Ordinary quiet breathing is 1. apnea 2. eupnea 3. dyspnea 4. as...

    Text Solution

    |

  8. Asthma is a respiratory disease caused by:

    Text Solution

    |

  9. In which disease, due to flattening of tracheal vessels, alveoli are d...

    Text Solution

    |

  10. Which of the following is not true about asthma ?

    Text Solution

    |

  11. In heavy smoker the alveoli of the lungs are enlarged and damaged whi...

    Text Solution

    |

  12. Match the disorders given in column I with symptoms under column II ch...

    Text Solution

    |

  13. Hypoxia is the condition in which less oxygen becomes available to the...

    Text Solution

    |

  14. Whether a child died after birth or died before birth can be confirmed...

    Text Solution

    |

  15. About 97 % of oxygen is transported by RBC. The remaining 3 % is 1. pr...

    Text Solution

    |

  16. The diagram represents the human larynx choose the correct combination...

    Text Solution

    |

  17. Lack of pulmonary surfactant produces

    Text Solution

    |

  18. In the resting person saturation of hemoglobin as blood leaves the tis...

    Text Solution

    |

  19. Read the following statement and select the correct one 1. oxyhaemogl...

    Text Solution

    |

  20. When the oxygen supply to the tissue is inadequate the condition is 1...

    Text Solution

    |