1 / 7

KEY CONCEPT The vascular system allows for the transport of water, minerals, and sugars.

KEY CONCEPT The vascular system allows for the transport of water, minerals, and sugars. Xylem contains specialized cells. vessel elements are short and wide tracheid cells are long and narrow xylem cells die at maturity . tracheid. vessel element.

enye
Download Presentation

KEY CONCEPT The vascular system allows for the transport of water, minerals, and sugars.

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. KEY CONCEPTThe vascular system allows for the transport of water, minerals, and sugars.

  2. Xylem contains specialized cells. vessel elements are short and wide tracheid cells are long and narrow xylem cells die at maturity tracheid vessel element Water and dissolved minerals move through xylem.

  3. Plants passively transport water through the xylem. Cohesion is the tendency of water molecules to bond with each other. • The cohesion-tension theory explains water movement. • Adhesion is the tendency of water molecules to bond with other substances.

  4. absorption occurs at roots • Water travels from roots to the top of trees. • cohesion and adhesion in xylem • transpiration at leaves

  5. water vapor exits leaf stomata helps pull water to the top branches • Transpiration is the loss of water vapor through leaves.

  6. Phloem contains specialized cells. sieve tube elements have holes at ends companion cells help sieve tube elements unlike xylem, phloem tissue is alive Phloem carries sugars from photosynthesis throughout the plant.

  7. plants actively transport sugar from the source sugar flows to the sink due to pressure differences phloem xylem sugars Water moves from the xylem into the phloem by osmosis, due to the higher concentration of the sugars in the phloem. The water flow helps move sugars through the phloem. 2 Sugars move from their source, such as photosynthesizing leaves, into the phloem. 1 water The sugars move into the sink, such as root or fruit, where the are stored. 3 • The Pressure-flow model explains sugar movement.

More Related