Question

Select correct statements from the following:
a. In the majority of the dicotyledonous plants, the direct elongation of the radicle leads to the formation of the primary root.
b. In monocotyledonous plants, the primary root is short-lived and is replaced by a large number of roots. These roots originate from the lowermost node of the stem and constitute the fibrous root system.
c. Adventitious roots are found in Monstera and banyan tree.
d. The fibrous root system is found in wheat and mustard plants.

• A. a and c only
• B. a, b and c only
• C. a, c and d only
• D. All of the above

Answer 1

Answer: (B)

In dicotyledonous plants, radical gives rise to primary roots from which lateral roots are forms giving taproot system. While in some monocotyledons roots are forms from other organs than radical and they are called adventitious roots for e.g., grasses, banyan and monstera.
Since the mustard plant is dicotyledenous, they posses a taproot system. Therefore, statement d is not correct.