CLASS IV , CHAPTER 1
OUR GREEN FRIENDS 1. What are the functions of a leaf? Ans: Most of the plants have green leaves which perform various functions. 1. Food preparation : Green plants prepare their own food by the process of photosynthesis . 2. Respiration : Leaves of the plant contain stomata which help in respiration. 3. Prevention of global warming : During photosynthesis leaves absorb carbon-di-oxide and release pure , cold oxygen gas . Thus leaves of the plants prevent our environment from global warming. 2. Why are plants called producers? Ans: Our body can not make food but a plant can makes their own food . As the green plants can prepare their own food by the process of photosynthesis therefore plants are called as Producers. 3. How do plants use the food they prepare? Ans: Plants use the foods to grow and live. The extra food prepare by the plants is stored in different parts of the plants such as roots, stem, fruit & se