Vascular bundles in monocotyledons are considered closed because
there is no cambium
xylem is surrounded all around by phloem
there are no vessels with perforations
a bundle sheath surrounds each bundle
Monocot stem has definite number of vascular bundles
The central cylinder consisting of vascular tissue and pericycle is called
Does the arrangement of vascular bundles differ in dicots and monocots? If yes, then which of the following statement is true when we consider their vascular tissue systems?
Yes, the xylem is exarch in dicots and endarch in monocots
No, the vascular bundles in both dicots and monocots are arranged in the same way.
The vascular bundles are arranged in circular pattern in dicots and monocot root. It is randomly dispersed in monocot stem.
Yes, the vascular bundles are enclosed by pericycle in dicots and are open in monocots.
The position of cambium ring at the time of its origin in a dicot root is:
Internal to phloem and external to xylem.
External to phloem and internal to xylem.
Completely outside xylem and phloem.
Completely inside xylem and phloem.
Grafting is not possible in monocots because they:
have parallel venation.
have scattered vascular bundles.
- Ground tissue
- Conjunctive tissue
Which of the following is absent in closed vascular bundles?
- vascular bundle
- pith and vascular bundle
- pith and cortex
- cortex and endodermis
The vascular bundles are maximum in
Root of maize.
Stem of maize.
Root of sun flower.
Stem of sun flower.