Sterile stamen. Each anther is usually bilobed and each lobe has two chamber, the pollen-sacs. The pollen grains are produced in pollen-sacs. A sterile stamen (incapable of producing fertile pollen) is called staminode
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.