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Answers
- Aerobic Respiration: 1Oxygen is required for this type of respiration to take place.
2 It involves the exchange of gases between the organism and the outside environment.3Process of respiration takes place in the cytoplasm and the mitochondria.
Anaerobic Respiration : 1 No requirement of oxygen in this process. 2 Exchange of gases is there but oxygen gas does not take part. 3Takes place in the cytoplasm only.
Q2 Inhalation and exhalation are how your body brings in oxygen and gets rid of carbon dioxide. The process gets help from a large dome-shaped muscle under your lungs called the diaphragm. ... The opposite happens with exhalation: Your diaphragm relaxes upward, pushing on your lungs, allowing them to deflate.
Q3 Mechanism of respiration- It occurs in following steps:
1. Breathing: Taking in oxygen and expelling carbon dioxide out is called breathing. It involves following steps :
Inhalation: It is taking in oxygen. It occurs due to contraction of muscles attached to ribs and flattened diaphragm which increase the volume of thoracic cavity. Hence, the pressure inside the thoracic cavity decreases and air rushes into of the lungs.
Exhalation: It is expelling of carbon dioxideont. It occurs due to relaxation of muscles attached to ribs and diaphragm is dome shaped. This decreases the volume of thoracic cavity and decreases air pressure and expels CO2 out of the lung.
2 Exchange of gases: It takes place between the alveoli of lungs and surrounding blood capillaries.
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3.Transport of gases in blood: Haemoglobin present in the blood transports O2 and CO2 in blood. Oxygen is transported from the lungs to the body cells in the form of any haemoglobin.
4.Oxidation of food: Breakdown of glucose molecules which produce energy. It occurs in mitochondria.
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Q4
Most animal respiration involves four steps: Taking air in (inspiration) and pushing air out (expiration). The term breathing refers to the processes of inspiration and expiration in humans and many other animals. Circulating gases throughout the body.
Q5. Aquatic animals may breathe air or extract oxygen that dissolved in water through specialised organs called gills, or directly through the skin.