Q. Lenticels (water proof layer) are formed in the

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Q. In green plants gaseous exchange occurs through diffusion as they have

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Q. Trachea is supported by C-shaped rings of cartilage to kept it

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Q. When the blood passes through oxygen poor tissues oxygen will be

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Q. Gaseous exchange between organism and their environment occurs through

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Q. The mucous membrane within nostrils keeps the air

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Q. If there is too little carbon dioxide in the lungs the breathing movements will be

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Q. The respiratory should be thin and

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Q. Carbon dioxide produced by tissue and cells when it diffuses into blood plasma is converted into

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Q. The ribs are attached to backbone

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Q. During inspiration blood has higher concentration of carbon dioxide as compared to

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Q. During inspiration volume of thorax will

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Q. The diaphragm flattens downwards as it's muscles

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Q. During exhalation the external intercostals muscles

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Q. The peura (elastic membrane) covers

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Q. The complemented air is about

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Q. After the formation of hemoglobin carbon dioxide move from blood into

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Q. The amount of air changes as there are changes in

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Q. The higher animals have special organs for exchange of gases as their skin is

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Q. Food substances like starch can be stored in

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