Nutrition in plants Worksheet-3
Multiple-Choice Questions:
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Which gas is released by plants during photosynthesis?
(A) Oxygen (B) Carbon dioxide
(C) Nitrogen (D) Hydrogen
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Which gas is used by plants during photosynthesis?
(A) Oxygen (B) Carbon dioxide
(C) Nitrogen (D) Hydrogen
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Pores in the leaves through which air enters are called:
(A) Stomata (B) Guard cell (C) Vesicles (D) Veins
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When a food material rich in starch is treated with Iodine solution ,the solution is turned:
(A) Violet (B) Blue-black (C) Black (D) Brown
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The carbohydrates are made up of carbon, hydrogen & oxygen. These are used to synthesize other components of food. But proteins are nitrogenous substances which contain nitrogen. Plants obtain nitrogen from:
(A) Air (B) Soil (C) Water (D) None of these
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Plants growing in deserts have leaves in the form of spines. Where does photosynthesis take place?
(A) Leaves (B) Stems (C) Flowers
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Mushrooms obtain their food by/from:
(A) Photosynthesis
(B) Eating insects
(C) Dead and decaying organisms
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Fungi grow on pickles, leather or other things that are left in hot and humid weather for long time. They are:
(A) Commensal (B) Saprotrophs
(C) Chemo autotrophs (D) Photo autotrophs
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Which of the following is not an example of saprophytes?
(A) Moulds (B) Mushrooms
(C) Cuscuta (D) Rhizobium
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Algae are:
(A) Heterotrophs (B) Saprotrophs
(C) Chemo autotrophs (D) Photo autotrophs
Answer Key:
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(A)
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(B)
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(A)
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(B)
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(B)
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(B)
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(C)
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(B)
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(D)
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(D)
