Question

Which of these characters does$/$ do not apply to vascular bundle of monocot stem?
I. Conjoint
II. Endarch protoxylem
III. Open
IV. Phloem parenchyma is absent.

• A. I and II only
• B. II and III
• C. III and IV
• D. III
• E. I and IV only

Answer 1

Answer: (D)

III

I.Conjoint – applicable – because xylem and phloem are present side by side in the vascular bundles.

II.Endarch protoxylem – applicable – because protoxylem is present towards medulla side and metaxylem is present towards the pericycle side.

III.Open – not applicable – because, cambium is absent between the xylem and phloem in the vascular bundles.

IV.Phloem parenchyma is absent – applicable – in the phloem of monocots phloem parenchyma is not present.

So, the correct option is ‘III’