Pollen Grain Structure and Diversity — NEET Biology
📚 Practice ConceptYou will really be amazed at the variety of architecture – sizes, shapes, colours, designs – seen on the pollen grains from different species.
Which of the following statements about pollen viability are correct? S1: Pollen viability is highly variable among different plant species and is influenced by environmental conditions. S2: Pollen grains of cereals like rice and wheat typically retain viability for several days under ambient conditions. S3: Pollen from members of families such as Rosaceae, Leguminoseae, and Solanaceae can maintain viability for a period of months. S4: Pollen banks involve storing pollen grains for extended periods, even years, in liquid nitrogen at -196°C for crop breeding programs. S5: High temperature and high humidity are generally favourable conditions for extending the period of pollen viability.
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