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Get Answers to all your Questions
- #Plant Physiology
- #Class 11
- #Medical
- #Biology
- #AIPMT 2012 ( Prelims )
- #National Eligibility Cum Entrance Test
Water containing cavities in vascular bundles are found in :
Option: 1
Sunflower
Option: 2
Maize
Option: 3
Cycas
Option: 4
Pinus
Answers (1)
- The vascular bundles of a monocot plant lack cambium, which means that they are closed, collateral, or leptocentric and conjoint.
- Maize is the only monocot among the available options. Since pinus and cycas are gymnosperms, they are not included in the monocot and dicot categories. Despite being a dicot, the sunflower is an angiosperm.
- In vascular heaps of maize, xylem parenchyma cells and the lowermost proto-xylem vessels break down to shape schizo-lysigenous depression (water-containing cavity known as a proto-xylem hole or lysigenous cavity or lacuna or Proto-xylem cavity. There may be no protophloem found in smaller vascular bundles of the maize (Zea mays).
Hence, the correct answer is option 2.
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