Medical
Biology
Monocot Stem
Anatomy of Root
Dicot Stem
Question
Two cross-sections of stem and root appear similar, when viewed by naked eye, but under microscope, they can be differentiated by
Know your College Admission Chances Based on your Rank/Percentile, Category and Home State.
Get your JEE Main Personalised Report with Top Predicted Colleges in JoSA
Solution
Correct option: D
Solution
Option D:
- The cross-sections of root and stem can be differentiated by endarch condition of stem and exarch condition of root.
- Exarch condition is when protoxylem is found towards the periphery of pith whereas the metaxylem is found towards the center of the pith. The newly formed cells are present in the core of pith like in dicot roots.
- Endarch condition is when metaxylem is found towards the periphery of pith whereas the protoxylem is found towards the center of the pith. The oldest cells (protoxylem) are present in the core like in dicot stem.
Hence the correct option is option D.