Q. Which one of the following was observed for the first time by Trenb?
A) Entry of the pollen tube into the ovule through the micropyle in ottetia
B) Entry of the pollen tube into the ovule through the chalaza in casuarina
C) Entry of the pollen tube into the ovule through the integuments
D) Formation of many pollen tube into the ovule through the grain in hibiscus
Explanation
Trenb observed entry of pollen tube into the ovule through chalazal end in Casuarina. This is known as chalazogamy.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.