Q. Algal zone is present in
A) Normal root of $Cycas$
B) Coralloid root of $Cycas$
C) Normal root of $Pinus$
D) Stem of $Cycas$
Explanation
The cortex in coralloid roots of $Cycas$ is divided into inner and outer regions by algal zone. The cells of this zone contain endophytic algal forms particularly $Anabaena\ cycadeae\ and\ Nostoc\ punctiforme.$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.