26 Plant Transport (answers)

26 Plant Transport (answers) - SI Leader: Anita Vijapura...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
SI Leader: Anita Vijapura Spring 2010 BSC2011 02/25-02/26 Transport in Vascular Plants Xylem: Transports what? Water and minerals Transports where? Roots to shoots Phloem: Transports what? Sugars Transports where? From where produced or stored to where they are needed for Transport process: 1) Roots absorb __water and dissolved minerals__ from __the soil__. 2) __water and minerals__ are transported __upward__ from ___roots__ to __shoots__ as ___xylem___ sap. 3) ___transpiration (the loss of water from leaves-mostly through stomata)__ creates a force within leaves that pulls __xylem___ sap __upward__. 4) Leaves take in __co2__ and expel __o2__ through __stomata__. (the co2 provides carbon for photosynthesis and some o2 produced by photosynthesis is used in cellular respiration.) 5) __sugars__ are produced by ____photosynthesis__ in the __leaves__. 6) __sugars__ are transported as ___phloem__ sap to __roots and other parts of the plant__. 7) Roots exchange gases with the __air spaces of soil__, taking in __o2__ and discharging __co2__. (in cellular respiration, o2 supports the breadown of sugars__. What controls the movement of solutes into and out of a plant cell? Selective permeability The two main types of transport differ in ___energy expenditure & diffusion direction relative to electrochemical gradient__. 1) __passive transport__ a. Use energy? No b. Diffusion direction: down electrochemical gradient 2) __active transport___ a. Use energy? Yes 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
SI Leader: Anita Vijapura Spring 2010 BSC2011 02/25-02/26 b. Diffusion direction: against electrochemical gradient Most solutes cannot cross the __lipid__ bilayer. So, how do they get to the other side? Specific transport
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

26 Plant Transport (answers) - SI Leader: Anita Vijapura...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online