a. Annual rings are bands of secondary phloem and medullary rays.

b. The wood of Cycas has vessels.

c. Conjoint vascular bundles are found in the leaves of sunflowers and maize.

Which of the above statement(s) is/are correct?

1. a & b are correct

2. b & c are correct

3. Only a is correct

4. Only c is correct

3. Match the following columns.

Codes

       A   B   C   D 

(a)   3   4   1   2

(b)   1   2   3   4

(c)   3   2   4   1

(d)   3   2   1   4