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Match column-I with column-II and choose the correct option.
Column -IColumn -II
A. Bulliform cellsI. Initiation of lateral roots
B. PericycleII. Root
C. Endarch xylemIII. Grasses
D. Exarch xylemIV. Dicot leaf
E. Bundle sheath cellsV. Stem

A. A III, B V, C IV, D I, E II

B. A II, B V, C I, D III, E IV

C. A II, B IV, C I, D III, E V

D. A III, B I, C V, D II, E IV

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Correct Answer : D.


A - Bulliform cells: They are large, bubble-shaped, empty colourless epidermal cells that occur in groups on the upper surface of the leaves of many grasses.
B - Pericycle: It is a thin layer of plant tissue between the endodermis and the phloem. Initiation of lateral roots and vascular cambium during the secondary growth takes place in these cells.
C - Endarch xylem: When protoxylem lies towards the centre (pith) and metaxylem lies towards the periphery of the organ, it is called endarch xylem. This type of xylem occurs in stems.
D - Exarch xylem: When protoxylem lies towards the periphery and metaxylem lies towards the centre, it is called exarch xylem. This type of xylem occurs in roots.
E - Bundle sheath cells: They are layer of cells in plant leaves and stems that forms a sheath surrounding the vascular bundles. These cells are found in dicot leaf.

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