Which one of the following statements is incorrect?
- AThe principle of countercurrent flow facilitates efficient respiration in gills of fishes.
- BThe residual air in lungs slightly decreases the efficiency of respiration in mammals.
- CThe presence of non-respiratory air sacs increases the efficiency of respiration in birds.
- DIn insects,circulating body fluids serve to distribute oxygen to tissues.
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Similar Questions
When the external temperature is higher than our body temperature, we regulate it by $........$, and when it is lower than our body temperature, we regulate it by $........$.
Medium
View SolutionWhich of the following statements are not correct?
$I.$ Diffusion membrane is made up of $3$ layers
$II.$ Solubility of $CO_{2}$ in blood is higher than $O_{2}$ by $25$ times
$III.$ Breathing volumes are estimated by spirometer
$IV.$ High $H^{+}$ in blood favours oxygen dissociation
Choose the correct option
$I.$ Diffusion membrane is made up of $3$ layers
$II.$ Solubility of $CO_{2}$ in blood is higher than $O_{2}$ by $25$ times
$III.$ Breathing volumes are estimated by spirometer
$IV.$ High $H^{+}$ in blood favours oxygen dissociation
Choose the correct option
Medium
View SolutionWhich of the following statements is correct regarding breathing?
Medium
View SolutionWhich two of the following changes $((i)$ to $(iv))$ usually occur in plain dwellers when they move to high altitudes ($3500 \ m$ or more)?
$(i)$ Increase in red blood cell size
$(ii)$ Increase in red blood cell production
$(iii)$ Increased breathing rate
$(iv)$ Increase in thrombocyte count
$(i)$ Increase in red blood cell size
$(ii)$ Increase in red blood cell production
$(iii)$ Increased breathing rate
$(iv)$ Increase in thrombocyte count
MediumAIPMT 2010
View SolutionWhich of the following is functional for protection against the environmental abiotic factor of temperature or for thermoregulation of the living body during winter or summer?
Medium
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