Topic 8 - Plant Transport

Question 0

Phloem

Answer 0

Transports photosynthetic products from where they are stored to where they are needed.

Question 1

Xylem

Answer 1

Transport of water and minerals from roots to shoots.

Question 2

Apoplast

Answer 2

Everything external to the plasma members of a plant cell membrane.

Question 3

Symplast

Answer 3

The inner plasma membrane of a plant cell in which water can freely diffuse.

Question 4

Osmosis

Answer 4

The diffusion of water.

Question 5

Water potential

Answer 5

The physical property that predicts which way water will flow.

Question 6

Turgor Pressure

Answer 6

The pressure exerted against a plant cell wall.

Question 7

Casperian Strip

Answer 7

A material made of Suberin that is impervious to water and nutrients.

Question 8

Transpiration

Answer 8

The loss of water vapor primarily through stomata.

Question 9

Guard cells

Answer 9

Cells that encompass the stomata that regulate the passage of gases between the external environment and interior regions of plants.

Question 10

Suberin

Answer 10

Material that is impervious to water and minerals. Found in casperian strip.

Question 11

Psi

Answer 11

Water potential.

Question 12

Stomata

Answer 12

A pore usually found in the epidermis of plant leaves and stems and regulates gas exchange.

Question 13

Cohesion

Answer 13

The property of molecules sticking together- being mutually attracted. The mechanism of action is hydrogen bonding.

Question 14

Adhesion

Answer 14

The tendency of dissimilar particles of surfaces to cling to one another. The mechanism of action is hydrogen bonding.

Question 15

Endodermis

Answer 15

The central, innermost layer of cells of the cortex found in some land plants.

Question 16

Plant sink

Answer 16

Organs that consume sugars such as the roots, stems, and fruits.

Question 17

Sugar source.

Answer 17

An organ that produces sugars such as the leaves and some storage organs seasonally.

Question 18

Phloem (un)loading.

Answer 18

Phloem gets loaded by sugar at the source and gets unloaded at the sink. Loading and unloading process driven by pressure differential. Sugars and co transported with H+ ions.

Question 19

Root pressure

Answer 19

The osmotic pressure found in root cells that cause sap to rise through the plant stem to the leaves.

Question 20

Surface tension.

Answer 20

The elastic tendency of liquids to stick together in order to obtain a shape with minimal surface area.

Question 21

Cavitation

Answer 21

The formation of vapor within a liquid.