BIOL1030-Lecture test2-student

E a waxy outermost layer of root which is used to

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: commensalistic 30. A B C D E In the above picture, which letter refers to the secondary xylem? 31. In the summer when plants are storing sugar that is being produced in the leaves and roots, the root is the ________ and the leaves are the ________. A) xylem source; xylem sink D) phloem sink; phloem source B) xylem sink; xylem source E) xylem source; phloem sink C) phloem source; phloem sink 32. During sugar movement in phloem, water enters sieve tubes from A) companion cells. B) adjacent xylem. C) cortical tissues. D) endodermal cells. E) the mesophyll. 33. Water loss through the stomata of leaves is termed A) transpiration. B) translocation. C) guttation. D) osmosis. E) bulk flow. 34. What is the Casparian strip? A) A waxy lay...
View Full Document

This note was uploaded on 03/20/2014 for the course BIOL 1030 at Auburn University.

Ask a homework question - tutors are online