...........and.......... pollen loose viability within $30$ minutes
Wheat and mango
Wheat and rice
Mango and rice
Rice and Sugarcane
Even after killing the generative cell with a laser beam, the pollen grain of a flowering plant germinates and produces normal pollen tube because
Microsporangia develops in to
Members of which plant family, pollen grains maintain viability for months ?
Approximate diameter of pollen grain is