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Which of the following serve as green lungs?
(a) Green pigment of the plants
(b) Forests
(c) Kitchen gardens
(d) Greenhouse gases
Correct Answer: (b) Forests
Explanation: Plants in the forest release oxygen during photosynthesis which provides oxygen to all living beings. It also helps to maintain the ratio of oxygen to carbon dioxide in the atmosphere.
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- What Is A Green Pigment?
- Name the green pigment present in the leaves of a plant.
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- What is the colour of aqueous solution of CuSO4 and FeSO4 as observed in the laboratory?(a) CuSO4 – blue; FeSO4 – light green(b) CuSO4 – blue; FeSO4 – dark green(c) CuSO4 – green; FeSO4 – blue(d) CuSO4 – green; FeSO4 – colourless.
- Which of the following colour of white light is least deviated by the prism?(a) green (b) violet (c) indigo (d) yellow
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- How the colour changes when the gases after thermal decomposition of ferrous sulphate come in contact with an acidified solution of potassium dichromate?(a) Green to orange(b) Red to colorless(c) Orange to green(d) Blue to green.
- Why plants are of green colour?
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- Green plants prepare their food by the process of ______.
- Fill in the following blanks with suitable words:(a) All green plants are ______.(b) All non-green plants and animals are ______.(c) Heterotrophs depend on _____ and other _____ for food.(d) Green plants use ______ and _____ to make food.(e) Iodine turns blue-black on reacting with ______.\n31355"
- Name two greenhouse gases? Which one of them produces the maximum greenhouse effect?
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