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प्रश्न
Which gas in the atmosphere is essential for respiration?
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उत्तर
Oxygen is essential for respiration.
संबंधित प्रश्न
Fill in the blank space by choosing the correct word from the given list.
List: oxygen, carbonic, suIphurUioxide gas, precipitation, helium
Solution of carbon dioxide in water is called _________ acid.
Fill in the blank
Green plants need ________________to prepare food.
Fill in the blanks
Oxygen is used in ___________the food to get _______.
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
Photosynthesis is a process by which green plants prepare their own food in the presence of sunlight and chlorophyll.
Compare respiration and combustion-both involving oxygen of the air.
Explain why mountaineers carry oxygen cylinders with them?
Analogy
Photosynthesis : _____ :: Respiration : Oxygen
“Air is not an elementary substance, but a composition”. Why?
______ gas is essential for the proper growth of all plants.
Boojho took an empty plastic bottle, turned it upside down and dipped its open mouth into a bucket filled with water. He then tilted the bottle slightly and made the following observations.
- Bubbles of air came out from the bottle.
- Some water entered the bottle.
- Nitrogen gas came out in the form of bubbles and oxygen got dissolved in water.
- No bubbles formed, only water entered the bottle.
Which observations is/are correct?
