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Questions and Answers
All the living ______ require food.
organisms
The process of taking food by an organism as well as the utilisation of this food by the organism is called ______.
nutrition
Plants can make their own ______.
food
All the ______ plants are autotrophs.
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Autotrophs are those organisms which can make ______ themselves from simple substances.
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The methods of obtaining ______ are called modes of nutrition.
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Green plants can make their own food from simple substances like carbon dioxide and water present in their surroundings by the process of _______
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Green plants have _______ mode of nutrition.
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Autotrophs contain a green pigment called _______ which helps them make food by absorbing energy from sunlight.
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Most of the plants are _______ and hence synthesise (make) their own food.
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The green plants produce food not only for themselves, they also make food for non-_____ plants as well as for animals (including human beings).
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Chlorophyll is present in every leaf of a plant in the form of hundreds of tiny structures called ______.
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Our body (and that of other animals) cannot make food from carbon dioxide and water present around us by the process of _______ because our body does not have the green pigment called chlorophyll.
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The sunlight supplies energy for the food making process called ______.
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The sun’s energy is captured by plant leaves with the help of ______ and converted into chemical energy of food.
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The presence of ______ in leaves can be tested by pouring dilute iodine solution over the decolourised leaf.
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Leaves make ______ as food by photosynthesis.
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The ultimate source of energy for all the living organisms is the ______.
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Plants cannot absorb ______ gas for their needs.
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The soil has certain ______ which convert nitrogen gas of air into nitrogen compounds.
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______ are the water soluble nitrogen compounds which are absorbed by the plants from the soil along with water.
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The plants also obtain nitrogen from the ______ fertilisers which the farmers add to the soil in the fields from time to time.
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Vitamins are made by ______.
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Starch is a food which is stored in various parts of a plant such as roots, stem, leaves and ______.
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Certain plants convert the simple carbohydrate glucose made during photosynthesis into ______ and store them in their seeds.
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The oils obtained from plant seeds are commonly known as ______ oils.
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Plants combine some of the glucose carbohydrate made during photosynthesis with ______ minerals to make amino acids which are then made into proteins.
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Nitrogen element is present in abundance in air in the form of ______ gas.
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Proteins are ______ substances which contain nitrogen element.
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