Question

Which factor promotes pollen tube growth by providing energy and preventing osmotic damage?

Options

• Boron

• Sucrose and carbohydrates

• Pectinase and cellulase enzymes

• Calcium

Answer 1

Sucrose and carbohydrates serve as energy sources for pollen tube growth. They are crucial because they provide the metabolic energy needed for tube elongation and also create an appropriate osmotic environment that prevents the pollen from bursting due to excessive water absorption and osmotic pressure.