NEET BIOLOGY

STRUCTURAL ORGANISTION OF PLANTS AND ANIMALS

ANATOMY OF FLOWERING PLANTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Assertion:Vascular bundle of monocot stem is conjoint. Reason:Vascular bundle of monocot stem are open and phloem parenchyma is absent
A
A
B
B
C
C
D
D
Explanation: 

Detailed explanation-1: -The conjoint vascular bundle can be open or closed based on the presence of cambium. In monocots, cambium is not present in between the xylem and phloem. Hence, it is known as a closed vascular bundle. Hence, monocot stem will have conjoint and closed vascular bundles.

Detailed explanation-2: -In monocot stem, the vascular bundle is collateral and closed. The vascular bundle without cambium is called as closed vascular bundle.

Detailed explanation-3: -The vascular bundle encloses both xylem and phloem. The xylem is present in the inner surface and phloem in the outer surface and cambium is not present in monocot plants. Hence, the vascular bundles in monocot stem are endarch, closed, and collateral.

Detailed explanation-4: -The vascular bundle is known as conducting vessel of a plant. The vascular bundle consists of the xylem and phloem. They aid in water and dissolved mineral absorption, as well as their transmission to the stem and the storage of reserve foods. In the vascular bundle, phloem and xylem are separated by only a few cells.

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