Q. Coralloid roots of $Cycas$ are useful in
A) $N_{2} - fixation$
B) Absorption
C) Transpiration
D) Fixation
Explanation
Coralloid roots have an algal zone in middle cortex. Some nitrogen fixing blue-green algae like $Anabaena,\ Nostoc,\ Cycadacearum$ are found in algal zone.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.