Assertion : Pollen grains of many species cause severe allergies and bronchial afflictions in
Channel: Doubtnut
Date: 2020-01-26

Assertion : Pollen grains of many species cause severe allergies and bronchial afflictions in some people leading to acute respiratory disorders-asthma, bronchitis, etc. Reason : In some members of Rosaceae, Leguminoseae and Solanaceae, pollen grains lose viability within 30 minutes of their release.