Pollen grains are generally spherical and measuring in diameter about -
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 25-50 micrometers
A pollen grain is the male gametophyte of a flowering plant, formed inside the pollen sac. It is generally spherical, and its diameter is about 25-50 micrometres. Its hard outer wall, the exine, is made of sporopollenin.
Note: A similar question was also asked in CUET (UG) 2026 on 21-05-2026 (Slot 2).
NCERT Extract:
Stamen, Microsporangium and Pollen Grain – …
