The following questions are based on the drawing of root or stem cross sections shown in Figure 35.2.

Figure 35.2
-The vascular system of a three-year-old eudicot stem consists of
A)3 rings of xylem and 3 of phloem.
B)2 rings of xylem and 2 of phloem.
C)2 rings of xylem and 1 of phloem.
D)2 rings of xylem and 3 of phloem.
E)3 rings of xylem and 1 of phloem.

Question

The following questions are based on the drawing of root or stem cross sections shown in Figure 35.2.
  
Figure 35.2
-The vascular system of a three-year-old eudicot stem consists of
A)3 rings of xylem and 3 of phloem. 
B)2 rings of xylem and 2 of phloem. 
C)2 rings of xylem and 1 of phloem. 
D)2 rings of xylem and 3 of phloem. 
E)3 rings of xylem and 1 of phloem.

Quizplus · Accepted Answer

A three-year-old eudicot stem typically has three rings of xylem, corresponding to three years of growth, and one ring of phloem, as phloem does not accumulate in rings like xylem.

The Following Questions Are Based on the Drawing of Root