Question
Biology Question on Anatomy of Flowering Plants
Which of these characters does/do not apply to the 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 only
C
III and IV only
D
III only
Answer
III only
Explanation
Solution
Vascular bundles of monocot stem are conjoint, collateral (xylem, phloem both present together on the same radius) but closed i.e. they lack cambium hence secondary growth is absent. Phloem consists of sieve tubes, companion cells and a few phloem fibres. Phloem parenchyma is absent.