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In a vertical section of a dorsiventral...

In a vertical section of a dorsiventral leaf, the protoxylem in its midrid bundle

A

Faces the dorsal epidermis of the leaf

B

Faces the ventral epidermis of the leaf

C

Is not distinct

D

Is surrounded by metaxylem

Text Solution

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The correct Answer is:
A
At maturity in dorsiventral leaf the proto-xylem lies towards upper epidermis i.e. faces dorsal epidermis of leaf and meta-xylem towards lower epidermis central epidermis of leaf.
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Assertion: For a better understanding of tissue organisation ofroots stems and leaves it is convenient to study the tansverse sections of the matures zones of these organs Reason: The vertical section of a dorisventral leaf through the lamina shows three main parts , namely epidermis, mesophyll and vascular system

in a dorsiventral leaf, protoxylem and metaxlem are located respectively