9.2 Water Transport In Multicellular Plants Flashcards

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1
Q

Turgor pressure (hydrostatic pressure)

A

Result of osmosis in plant cells, provides hydrostatic skeleton to support stems and leaves.

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2
Q

Root hair cells

A

Exchange surface in plants. Specialised epidermal cell near growing root tip

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3
Q

Symplast pathway

A

Where water moves between cytoplasm/vacuoles of adjacent cells through osmosis. Allows water to go from root hair cells to xylem

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4
Q

Apoplast pathway

A

Movement of water through the apoplast, cells walls and intercellular spaces. Water enters xylem, pulling more molecules through due to cohesion. Continuous flow of water through open structure of the cellulose wall

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5
Q

Endodermis

A

Layer of cells surrounding the vascular tissue (phloem and xylem) of the roots

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6
Q

Casparian strip

A

Band of waxy material called suberin that runs around each endodermal cell forming a waterproof layer. Causes water to be forced into cytoplasm of the cell. Once forced in it joins the symplast pathway

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7
Q

Cyanide

A

Type of poison, affects mitochondria preventing the production of ATP

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8
Q

Guttation

A

Process if secretion of water droplets from the pores of some vascular plants eg. Grass

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