Question

Match and answer correctly.

	List I: Type of protoxylem		List II: Plants
A	Monarch	1	Nicotiana
B	Diarch	2	Pisum
C	Triarch	3	Cicer
D	Tetrarch	4	Trapa

• A. A- 4, B- 1, C- 2, D- 3
  
• B. A- 1, B- 2, C- 4, D- 3
• C. A- 3, B- 1, C- 2, D- 4
• D. A- 2, B- 3, C- 4, D- 1

Answer 1

The correct option is A A- 4, B- 1, C- 2, D- 3

While the vascular system is made up of xylem and phloem, their relative positions help us to differentiate between the different plant groups. Xylem is further made up of protoxylem and metaxylem and the position of these are also critical points for differentiation. Further, depending on the number of protoxylem elements, these are classified as:

Monarch- single protoxylem group. For example: Trapa

Diarch- with two protoxylems. For example: Nicotiana

Triarch - with three protoxylems. For example: Pisum

Tetrarch - with four protoxylems. For example: Cicer

Thus, the correct answer is option A.