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Model Paper 8 — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceModel Paper 81 Mark
MCQ
Weeds affect the crop plants by
  • A
    dominating the plants to grow
  • B
    killing of plants in field before thy grow
  • C
    all of these
  • ✓
    competing for various resources of crops(plants) causing low availability of nutrients
✓

Answer

Correct option: D.
competing for various resources of crops(plants) causing low availability of nutrients
(d) competing for various resources of crops (plants) causing low availability of nutrients
Explanation: Unwanted plants which grow in the field are called weeds, e.g. Xanthium (gokhroo), Parthenium (gajar ghas),
Cyperinus rotundus (motha). They compete with crops for various resources; like sunlight, water and nutrients. Thus, weeds
hamper the growth of crops.

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