Air and Water
How is air useful to: (a) Water boats. (b) Agriculture. (c) Windmills. (d0 Scooters and cars.
Explain the importance of carbon dioxide for photosynthesis.
During photosynthesis which occurs during daytime, carbon dioxide and water in the presence of sunlight and chlorophyll is changed into carbohydrates and oxygen is released out.
Hence oxygen in the air is renewed by photosynthesis and therefore the amount of oxygen in air does not get depleted or removed from air.
How is air useful to: (a) Water boats. (b) Agriculture. (c) Windmills. (d0 Scooters and cars.
Fill in the blanks: Green plants need ______, ______ and _______ to prepare food.
Write 'true' or 'false': Carbon dioxide is given out during photosynthesis.
Choose the correct alternative from the choice given for the following statements: Photosynthesis is a process in which plants
Complete the statement given below by filling in the blanks: The component of air used in photosynthesis is ___________ and the product of photosynthesis is ___________.