Navigate

Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous

Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by

Options

(a) absence of secondary phloem
(b) presence of cortex
(c) position of protoxylem
(d) absence of secondary xylem

Correct Answer:

position of protoxylem

Explanation:

Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by position of protoxylem. In dicot root the protoxylem is located near the periphery of the vascular cylinder while in dicot stem the protoxylem is located near the centre of vascular bundle i.e. the xylem is endarch.

AIPMT2009
admin:

Related Questions

  1. When the members of one population do not breed at the same time of the year
  2. Number of (approximately) genes in E. coil are
  3. Aedes aegypti is a vector of disease
  4. The taxonomic unit phylum in the classification of animals is equivalent to
  5. Biological concept of species is mainly based on