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Microorganisms: Friend and Foe — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceMicroorganisms: Friend and Foe4 Marks
Question
The picture shows the nitrogen cycle.
Image
$9.$ How do plants take up nitrogen$?$
$A.$ She should repeat the same experiment.
$B.$ She should leave the test tube undisturbed for six hours.
$C.$ She should repeat the experiment with test tubes containing more sugar solution.
$D.$ She should keep an extra set of test tubes with sugar solution but without the yeast.
$10.$ Plants and animals are continuously using nitrogen. Will there be a depletion of nitrogen in the environment due to this continuous use$?$ Explain your answer.
✓

Answer

$9. C.$ From nitrogenous compounds in the soil
$10.$ Mentions that nitrogen in the environment will not get depleted because
it is recycled and reused in the environment.

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