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Sexual Reproduction in Flowering Plants — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYSexual Reproduction in Flowering Plants3 Marks
Question
“Pollen grains has some harmful effects”. Discuss.
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Answer

  1. Pollen grains cause severe allergies, bronchial respiratory disorders, asthma, bronchitis, etc.
  2. Parthenium (or carrot grass) came into India as contaminant with imported wheat and causes pollen allergy.

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