Question

Q7. What happens to the rate of breathing during vigorous exercise and why?
Q8.HName hormones secreted by pancreas. Is it related with the normal digestion of food?
Q9. How is respiration different from breathing?
Q10. Explain the mechanism of gaseous exchange between tissues and blood.
Q11. Why does blood not clot inside healthy vessels? What happens if the blood clots inside an intact vessel?
Q12. State the role of Excretion in living organisms. Describe how excretion takes place in amoeba.
Q13."All living organism are dependent on light for their nourishment"Justify the statement.
Q14. Why do we feel hungry at specific time?
Q15. Why do herbivores have longer whereas carnivores have a shorter small intestine?
Q16. Draw a well labeled diagram of human alimentary canal.
Q17.Explain double circulation in humans with the help of schematic diagram.​

Answer 1

7) the rate of breathing during vigorous exercise increases by about 20 to 25 times per minute it is because during vigorous exercise the demand for oxygen increases breathing occurs involuntarily but its rate is controlled by the respiratory centre of the brain

Answer 2

Answer:

1.the rate of breathing increases during vigrous excersice beacause we do a lotof work in a less period of time.

2.bile ....yes

4.