Download App

PART - 2 - Unit V : CH - 14 Breathing and Exchange of Gases — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYPART - 2 - Unit V : CH - 14 Breathing and Exchange of Gases2 Marks
Question
What is vital capacity? Compared to the atmosphere, there may be partial pressure of O2 and CO2 on various parts involved in diffusion.
✓

Answer

Vital Capacity : The maximum amount (volume) of air that a person can inhale after forced inhalation. This includes ERV, TV and IRV or the maximum amount of air that a person can exhale after forced inhalation.
The partial pressure (in mm Hg) of O2 and CO2 on various parts involved in diffusion as compared to the atmosphere is as follows:
S.No.RespirationAtmospheric AirAlveoliDeoxygenated BloodOxygenated BloodTissue
1.O2159104409540
2.CO20.340454045

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "2 Marks Questions" from PART - 2 - Unit V : CH - 14 Breathing and Exchange of Gases→PART - 2 - Unit V : CH - 14 Breathing and Exchange of Gases — all question types→BIOLOGY STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

$2\text{H}_{2}\text{O}\xrightarrow{\ \ \ \ \ \ }2\text{H}^{+}+4\text{e}^{-}+\text{O}_{2}\uparrow$ Based on the above equation, answer the following questions:
  1. Where does this reaction take place in plants?
  2. What is the significance of this reaction?
→
Differentiate between G, and $G _2$-phase
→
Answer the following.
  1. Name the major site where RBCs are formed.
  2. Which part of heart is responsible for initiating and maintaining its rhythmic activity?
  3. What is specific in the heart of crocodiles among reptilians?
→
What is interstitial fluid? Mention its importance in the body.
→
Differentiate between: Fibrous root and adventitious root.
→
Describe the characteristics of the cell of Phacophyceae.
→
What is nitrificaiton? Name any two nitrifying bacteria of soil.
→
Below is a list of plant fibres. From which part of the plant these are obtained?
  1. Coir.
  2. Hemp.
  3. Cotton.
  4. Jute.
→
The digestive system of frog is made of the following parts. Arrange them in an order beginning from mouth.
→
The vertebral column has four articulation points for the four limbs. This is similar to which of the following? What do you understand by ‘spineless’in the literal sense?
  1. A four wheeler has four articulation points for the four wheels.
  2. A two wheeler has two articulation points for the two wheels.
  3. A snake's vertebral column has no articulation point because it has no limb.
→