(a) “The breathing cycle is rhythmic whereas exchange of gases is a continuous process”. Justify this statement.
(b) What happens if conducting tubes of circulatory system develops a leak? State in brief, how could this be avoided?
(c) How opening and closing of stomata takes place?
Answers
ANSWER
(a).Breathing Is Rhythmic As It Occurs Due To Oscillatory Expansion And Contraction Of The diaphragm And Phrenic Muscles. Neural Impulses Are Responsible For This Control As They Communicate With The Respiratory Centres Of The Brain And the Intercoastal Muscles Of The Body.
(b).If conducting tubes of a circulatory system develpos a leak, the blood clots.After a leak the number of platelets would get increased that minimize the leakage and inactive thrombin becomes active thrombin in the presence of thromboplasm. This active thrombin converts the inactive fibrinogen into active fibrin and it result with a clot.
(c).When water surrounding medium enter the guard cells, the stomata opens.
When water goes out of the guard cells, the stomata closes.
hope it helps
Answer:
(a).Breathing Is Rhythmic As It Occurs Due To Oscillatory Expansion And Contraction Of The diaphragm And Phrenic Muscles. Neural Impulses Are Responsible For This Control As They Communicate With The Respiratory Centres Of The Brain And the Intercoastal Muscles Of The Body.
(b).If conducting tubes of a circulatory system develpos a leak, the blood clots.After a leak the number of platelets would get increased that minimize the leakage and inactive thrombin becomes active thrombin in the presence of thromboplasm. This active thrombin converts the inactive fibrinogen into active fibrin and it result with a clot.
(c).When water surrounding medium enter the guard cells, the stomata opens.
When water goes out of the guard cells, the stomata closes.
Hope it helped you