The wall of the pollen tube is made up of:

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(A) The pollen tube is an extension of the inner wall of the pollen grain,known as the intine. The intine is primarily composed of cellulose and pecti

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Cellulose and Pectin

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(A) The pollen tube is an extension of the inner wall of the pollen grain,known as the intine. The intine is primarily composed of cellulose and pectin. As the pollen tube grows through the style,its wall maintains this composition to allow for flexibility and elongation during the delivery of male gametes to the ovule. Sporopollenin is found only in the exine (outer layer) of the pollen grain,not in the pollen tube wall.

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