Q. In earthworm, self-fertilization cannot occur due to
A) Protogyny
B) Protandry
C) Epigyny
D) Hypogyny
Explanation
Due to protandry, self-fertilization does not occur in earthworm. In that case, earthworm testis mature earlier than ovaries which lead to cross fertilization between two worms.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.