Question

2. Differentiate betweeh Pesp
3. Explain the mechanism of breathing in humans. for class 7th

Describe hriefly the respiratory organs of the following:
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Answer 1

Answer:

Explanation:

Ans:2)PSP versions differences

The PSP is a handheld console and they have 4 models of the psp. The psp 1000, psp 2000 (aka slim), & psp 3000. ... The psp 2000 has improvements like the fact that its slimmer and double the battery life. The PSP 3000 is like the 2000 but it has a better screen and a built in microphone.

Ans:3)The breathing in human beings takes place through the organs called lungs. The taking in of air rich in oxygen into the body during breathing is called 'inhalation' and giving out (or expelling) the air rich in carbon dioxide is called 'exhalation'. Both, inhalation and exhalation take place regularly during breathing.

Ans:4)Respiratory organ of Human : Lungs

Respiratory organ of Earthworms : Skin

Respiratory organ of Cockroach : Trachea

Respiratory organ of Fish : Gills