Leaving Certificate BiologyTransport & Gas Exchange in Plants

2 iQuiz

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Through which of the following will carbon dioxide diffuse into a leaf at

the fastest rate?

Stomata

Guard cells Cuticle

Epidermis

Which of the following conditions is the only one which could bring

about a higher rate of transpiration?

Closing the stomata

A cold atmosphere

A dry atmosphere

A calm day

Through which of the following does most water reach the cells of

the leaf?

The phloem The xylem

The stomata The epidermis

The loss of water vapour from the leaf of a plant is known as …

Evaporation Transpiration

Respiration Translocation

Which of the following is not involved in transpiration?

Humidity Temperature

Root pressure Condensation

Two vascular tissues found in flowering plants are …

Phloem & Ground Xylem & Phloem

Xylem & Cortex Phloem & Dermal

Tissues involved in the transport of substances, i.e. xylem and phloem in plants, and blood in animals are

referred to as …

Internal tissue Transport tissue

Vascular tissue None of these

The walls of xylem vessels are reinforced with …

Protein fibres Lignin

Cellulose Myosin

What is the point of entry of carbon dioxide to a leaf?

Stomata Guard cells

Through veins of leaf Via the xylem

Name the tube-like tissue found in the stem in which water moves

through the plant.

Phloem Cambium

Xylem Meristem

The loss of oxygen from the leaves of a green plant in daylight is best

described as …

Transpiration Excretion

Nutrition Respiration

Which of the following processes can be investigated using dry

cobalt chloride paper?

Phototropism Osmosis

Water uptake Transpiration

Name the process by which the gases move in or out of the leaf.

Osmosis Diffusion

Active transport None of these

What term is given to the apertures in stems that are equivalent to the

stomata in leaves?

Lamellae Laminae

Lenticels Lacteals

Strong forces of attraction exist between water molecules, which

help in transpiration. What are these forces called?

Adhesive Cohesive

Consistent Bonding

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Transport & Gas Exchange in Plants 2 iQuiz