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Leaving Certificate Biology
Transport & 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
Epidermis
Guard cells
Cuticle
Which of the following conditions is
the only one which could bring
about a higher rate of transpiration?
Closing the
stomata
A calm day
A cold
atmosphere
A dry
atmosphere
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
Transport & Gas Exchange in Plants 2
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