Chapter 5 - Vascular integration and resource storage

  • strict warning: Non-static method view::load() should not be called statically in /var/www/pia/drupal/sites/all/modules/views/views.module on line 906.
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  • strict warning: Declaration of views_handler_filter::options_validate() should be compatible with views_handler::options_validate($form, &$form_state) in /var/www/pia/drupal/sites/all/modules/views/handlers/views_handler_filter.inc on line 607.
  • strict warning: Declaration of views_handler_filter::options_submit() should be compatible with views_handler::options_submit($form, &$form_state) in /var/www/pia/drupal/sites/all/modules/views/handlers/views_handler_filter.inc on line 607.
  • strict warning: Declaration of views_handler_filter_boolean_operator::value_validate() should be compatible with views_handler_filter::value_validate($form, &$form_state) in /var/www/pia/drupal/sites/all/modules/views/handlers/views_handler_filter_boolean_operator.inc on line 159.
  • strict warning: Declaration of views_plugin_style_default::options() should be compatible with views_object::options() in /var/www/pia/drupal/sites/all/modules/views/plugins/views_plugin_style_default.inc on line 24.
  • strict warning: Declaration of views_plugin_row::options_validate() should be compatible with views_plugin::options_validate(&$form, &$form_state) in /var/www/pia/drupal/sites/all/modules/views/plugins/views_plugin_row.inc on line 134.
  • strict warning: Declaration of views_plugin_row::options_submit() should be compatible with views_plugin::options_submit(&$form, &$form_state) in /var/www/pia/drupal/sites/all/modules/views/plugins/views_plugin_row.inc on line 134.
  • strict warning: Only variables should be passed by reference in /var/www/pia/drupal/modules/book/book.module on line 559.
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figure

Surface view of cleared whole mount of a wheat leaf showing large and small parallel veins (mauve). Lines of stomata (orange guard cells) lie along the flanks of these veins. Water evaporates from the wet walls of mesophyll cells below the stomata, drawing water from the veins through sheath cells. Scale bar = 100 um (Photograph courtesy Margaret McCully) 

...what quantities of moisture trees do daily imbibe and perspire: now the celerity of the sap must be very great, if that quantity of moisture must, most of it, ascend to the top of the tree, then descend, and ascend again, before it is carried off by perspiration. (S.Hales,Vegetable Staticks, 1727)

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