Question

Summarise the difference between a dicot and monocot root from the following table and pick up the wrong differences.

No.	Characters	Dicot root	Monocot root
A)	Activity of pericycle	Lateral root production	Secondary growth and cambium
B)	Vascular bundle	Diarch to tetrarch	Polyarch
C)	Cambium	Later developed	Absent
D)	Pith	Well developed	Poorly developed

• A. B, D
• B. A, C
• C. A, D
• D. A, B

Answer 1

Answer: (C)

A, D

• The pericycle is one layer thick structure that is present below the endodermis in the dicots.
• The layer is responsible for the production of lateral roots, cork cambium and the vascular cambium which helps in secondary growth.
• In monocots, this layer is made up of sclerenchymatous tissue. The pericycle helps in the development of the lateral roots.
• There are parenchymatous cells arranged in the central part which is known as the pith.
• There is no pith region in the roots of the monocots. There is developed pith in the dicot roots of the plants. The pith is surrounded by the vascular bundles in dicots.

Thus, the correct answer is option C.