A) secondary xylem and phloem
B) primary xylem and phloem
C) secondary xylem only
D) primary phloem and secondary xylem
Correct Answer: C
Solution :
The annual rings are formed by secondary xylem because the growth in spring and autumn seasons forms spring and autumn wood which constitute the annual rings which help in the estimation of plant age.
You need to login to perform this action.
You will be redirected in
3 sec
