The diameter of pollen grain lies between:
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, and the thin inner wall is the intine.
NCERT Extract:
Stamen, Microsporangium and Pollen Grain – …
