Multiple choice

Weeds should be removed from a crop field as early as possible, because

  1. they compete for food, space and light with the main crop.

  2. they take up nutrients from the soil, leaving fewer nutrients for the main crop.

  3. they reduce the yield of the main crop.

  4. all of the of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Weeds are unwanted plants that compete directly with crops for essential resources - nutrients from soil, space for growth, and sunlight for photosynthesis. This competition reduces the main crop's yield. Early removal is critical because weeds grow faster and can establish dominance quickly. All three effects (competition for food/space/light, nutrient depletion, yield reduction) occur simultaneously.

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