Q48 / 200 · MHT CET - Medical 2026 (21 April Shift 2) · Biology

Algal bloom is caused due to

  • Correct answer
    A
    Large amount of nutrients in water
  • B
    Large amount of toxic material in water
  • C
    High oxygen level in water
  • D
    High microbial growth in water

Solution

Algal bloom is caused by the presence of large amounts of nutrients in water, particularly nitrogen and phosphorus. This nutrient enrichment leads to excessive and rapid growth of planktonic (free-floating) algae, which imparts a distinct colour to the water bodies and deteriorates water quality.

Answer: Large amount of nutrients in water

Hence, the correct answer is option: 'A'.

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