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Biology
Organisation
Plant tissues
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Created by
Daniyal Zaman
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Cards (27)
What should you be able to describe by the end of the video?
The
roles
of
different
tissues in a plant
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Why is it important to learn the details in this video?
It is likely to be on your
exam
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Where does photosynthesis take place in a plant?
In the
leaves
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What is the leaf classified as in plant anatomy?
A plant
organ
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What type of cells cover the top and bottom of the leaf?
Epidermal cells
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What is the function of the epidermis in a leaf?
It
protects
the
surface
of the leaf
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What is a key adaptation of the upper epidermis?
It is
transparent
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How does the transparency of the upper epidermis benefit the leaf?
It allows light to pass to
photosynthetic cells
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What covers the upper epidermis to reduce water evaporation?
The
waxy cuticle
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What is the role of the lower epidermis in a leaf?
It contains
stomata
for gas exchange
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What are the tiny pores in the lower epidermis called?
Stomata
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What do stomata allow to enter and leave the leaf?
Carbon dioxide
enters,
oxygen
leaves
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What is the function of guard cells?
They control the opening and closing of
stomata
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What is found at the top of the leaf?
The
palisade mesophyll
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What do palisade cells contain that is crucial for photosynthesis?
Chloroplasts
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What is the key feature of the spongy mesophyll?
It is full of
air spaces
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How do air spaces in the spongy mesophyll benefit the leaf?
They allow gas diffusion to
palisade cells
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What two tissues are mentioned in relation to the leaf besides mesophyll?
Xylem
and
phloem
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What does xylem tissue transport?
Water and dissolved
mineral ions
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What is one use of water transported by xylem in photosynthesis?
It
is
used
in
the
photosynthesis
process
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What does phloem tissue transport?
Dissolved sugars produced by
photosynthesis
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What is the process of moving sugars through phloem called?
Translocation
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What is the final type of plant tissue discussed?
Meristem
tissue
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Where is meristem tissue found in plants?
At growing tips of
shoots
and
roots
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What do stem cells in meristem tissue do?
They can
differentiate
into various plant tissues
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What should you remember about plant tissues for your exam?
There
will
be
plenty
of
questions
on
them
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What are the roles of different tissues in a plant?
Epidermal tissue
: Protects leaf surface
Palisade mesophyll
: Contains
chloroplasts
for photosynthesis
Spongy mesophyll: Allows gas diffusion
Xylem
: Transports water and minerals
Phloem
: Transports sugars
Meristem
: Contains
stem cells
for growth
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