9.2 quiz bio

translocation

translocation

the movement of organic molecules through the phloem tissue of plants

steps of translocation

phloem loading, mass flow, phloem unloading

water, food, two

the phloem transports _____ and _____ in ______ ways

sieve elements

the phloem is composed of ___________ which connect to form a tube

highly perforated sieve plate

in the phloem, connecting sieve cells share a _________

companion cells, loading/unloading

the phloem is supported by _________ that help with _______

hydrostatic pressure, xylem

in the phloem, the movement of sap is mediated by _______ from the ______

source, sink

translocation moves materials from the ____ to the _____

source

where materials are made, like the leaves

sink

where materials are used like growing tissues and stored in like the roots

sucrose

sugars made from photosynthesis are transported as ____

phloem loading

sucrose is loaded into the phloem

apoplast loading

requires H+ pump and use of ATP

active

apoplast loading is a form of ______ transport

symplast loading

passive moment through the plasmodesmata

xylem, osmosis, high

water from the ____ enters the phloem by ____ once the sucrose concentration is ____

sucrose and water, mass flow

once ____________ mix (sap), the material moves via ____

mass flow

the passive transport of the material with water

high, low, sink

sap moves from _____ hydrostatic pressure to _____ hydrostatic pressure towards ____

phloem unloading

essentially the reverse process of phloem loading

vascular, ground, and dermal

types of tissues in the root and stem

dead cells, removed

xylem vascular tissue is composed of ________ where ends are ____

living cells, perforated walls

phloem vascular tissue is composed of _________ with _________ between them

one direction, cohesive forces, transpiration

vascular xylem tissue transports materials and water in _________ using ________ via ______

hormones, amino acids, and sugars, mass flow, translocation

vascular phloem tissue transports _____ using _____ via _____

vessel wall, fused, flow

vascular xylem tissue _______ consists of ____ cells that create a continuous tube for unimpeded ____

transverse ends, porous sieve plates

vascular phloem tissue vessel wall consists of cells that are connected at ________ forming _______

ground tissue

cortex cells and pith: involved in storage, photosynthesis, and support

dermal tissue

epidermis (composed of epidermal cells)

epidermis

provides a protective coating to the plant and is involved in water uptake in the roots

translocation

the movement of organic molecules through the phloem tissue in plants

sieve tube cells

perforated to allow the movement of solutes through them

companion cells

connected to the sieve tube cells

phloem

can transport materials in either direction through the plant

translocation

moves materials from a source to a sink

source

where materials are made

sink

where materials are stored

sap

solution that carries plant hormones and consists of all materials that are moved by translocation

mass flow

result of hydrostatic pressure; how materials move through plant to sinks

hydrostatic pressure

pressure exerted by a liquid

hydrostatic pressure gradient

___________ occurs in the phloem as sugar is in sources and sinks

pressure gradient

in leaves, sugar enters phloem and water enters through osmosis and creates the ______

phloem, other parts

pressure gradient pushes the content of the ______ to ____

vascular bundles

made up of xylem and phloem; in roots, stems, and leaves of plants

xylem tissue

composed of long series of cells - form together to make continuous tube

phloem

composed of living cells with perforated end walls (sieve plates)

phloem

sucrose has to be transported into the ____

high concentration

the H+ must be actively transported out of the companion cell so a _______ builds out

H+, concentration gradients

sucrose is cotransported with _____ - they both move down their ________

plasmodesmata

in some species, sucrose moves towards the sieve tubes via these connections

water potential

tendency of water to move from one area to another

solute potential

changes depending on the amount of solute

pressure potential

pressure exerted by the rigid phloem walls

pressure

the rigidity of the phloem walls allows for ______ to build up

respiration, sink, cellulose

glucose is used in _______ or stored in ______ or used to make _____

1. hydrogen ions are pumped out of companion cell

2. concentration gradient is created

3. hydrogen ions move into companion cell because now high concentration on outside and low concentration on inside

4. go back through co-transporter with sucrose

5. sucrose goes into sieve elements

steps of phloem loading

1. sucrose is in sieve tube cells

2. low water potential from sucrose causes water from xylem to come in through osmosis

3. water flowing in increases hydrostatic pressure

4. pressure pushes sap to go down the phloem into the sinks

translocation steps after phloem loading

sugar, hypertonic, water, xylem, lower

in phloem unloading, _______ is unloaded into the sink cells, this creates a ________ solution in the phloem which causes ______ to move back into the _______, which overall results in a _______ hydrostatic pressure

hypertonic solution

high solute concentration

hypotonic solution

low solute concentration