Leaving Certificate BiologyTransport & Gas Exchange in Plants

1 iQuiz

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Stomata are found mainly in the …

Stem Petals

Upper leaf surface Lower leaf surface

Root hairs are extensions of the …

Epidermis Ground tissue

Cuticle Xylem

Water enters the root hair by …

Diffusion Osmosis

Active transport Capillary action

The sticking together of similar molecules is called …

Conservation

Adhesion Active transport

Cohesion

Stomata are stimulated to open by …

High water pressure

Low O2

High CO2 Low CO2

The main gas which enters the leaf through the stomata during the

day is …

Water vapour Oxygen

Carbon dioxide Nitrogen

The loss of water vapour from the surface of the leaf is called …

Transpiration stream Transpiration

Translocation Evaporation

Gas exchange takes place in the stem through the …

Lenticels Stomata

Internodes Pores

When plant cells have a lot of water they are said to be …

Tensioned Turgid

Wilted Flaccid

Minerals are transported through a plant in the …

Phloem sieve tubes Companion cells

Xylem Ground tissue

Carbon dioxide enters the leaf by …

Transpiration Active transport

Osmosis Diffusion

Sugars made in photosynthesis are transported through the plant in

the …

Companion cells Xylem vessels

Sieve tube cells Ground tissue

Dixon and Joly suggested that water in the xylem is under …

Torsion Tension

Transport Transpiration

Water moves sideways from one xylem vessel to another through …

Sieve plates Pits

Spiral lignin Companion cells

Which of the following does not involve the upward movement of

water in the stem?

Root pressure Cohesion

Osmosis Translocation

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Transport & Gas Exchange in Plants 1 iQuiz