MCQ
Anatomically old dicotyledonous root is distinguished from the dicotyledonous stem by:
- APresence of cortex
- BAbsence of secondary phloem
- CAbsence of secondary xylem
- DPosition of protoxylem
✓
Answer
D. Position of protoxylem
Explanation:
In dicot root the protoxylem is located near the periphery of the vascular cylinder, the metaxylem farther inward i.e., exarch or centripetal. In dicot stem the protoxylem is located near the centre of vascular bundle and metaxylem is located near the periphery i.e., endarch or centrifugal.
Explanation:
In dicot root the protoxylem is located near the periphery of the vascular cylinder, the metaxylem farther inward i.e., exarch or centripetal. In dicot stem the protoxylem is located near the centre of vascular bundle and metaxylem is located near the periphery i.e., endarch or centrifugal.
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