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Topic 6: Plant Structures and Their Functions
6.3 Transport in Plants
6.3.1 Xylem and Phloem
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What is the main function of xylem in plants?
Water and mineral transport
Xylem tracheids
are elongated, tapered cells that also transport water and minerals, but have thicker cell
walls
Match the xylem component with its function:
Xylem Vessels ↔️ Upward transport of water and minerals
Xylem Tracheids ↔️ Alternative transport pathway
Xylem Parenchyma Cells ↔️ Structural support and storage
Xylem ensures that plants have the resources needed for
photosynthesis
and structural integrity.
True
The structure of
xylem
allows continuous upward water flow in plants.
True
What is the primary function of xylem parenchyma cells?
Structural support and storage
Xylem vessels are hollow tubes that efficiently transport water and
minerals
Xylem parenchyma cells offer structural support and
storage
What is the primary function of phloem in plants?
Sugar and nutrient transport
What type of substances does phloem transport from the leaves to other parts of the plant?
Sugars and nutrients
Match the phloem component with its function:
Sieve Tubes ↔️ Main transport pathway
Companion Cells ↔️ Support and regulation
Phloem Parenchyma ↔️ Structural support and storage
What are xylem vessels?
Hollow, tube-like structures
The interconnected network of
xylem
tubes allows efficient water and nutrient transport in plants.
True
Why is xylem essential for plant growth?
Water and nutrient transport
What are the key components of xylem?
Vessels, tracheids, parenchyma
Xylem tracheids
provide an alternative pathway for water and mineral transport, especially in plants with fewer xylem
vessels
What is the primary function of xylem in plants?
Water and mineral transport
What is the specialized structure that facilitates water and mineral transport in xylem?
Xylem tissue
Match the xylem component with its function:
Xylem Vessels ↔️ Efficient water transport
Xylem Tracheids ↔️ Alternative pathway
Xylem Parenchyma ↔️ Structural support and storage
Phloem transports
nutrients
and organic compounds downwards and laterally throughout the plant.
True
Companion cells provide support and regulate nutrient flow in sieve tubes.
True
The two-way transport system of xylem and phloem is crucial for the overall health and
vitality
Xylem is crucial for photosynthesis and plant
structure
Xylem
transports water and minerals from the roots to the leaves.
True
Water transport by xylem is crucial for photosynthesis and transpiration.
True
Phloem is composed of sieve tubes and companion
cells
Sieve tubes in phloem are connected by perforated sieve
plates
Water and minerals are transported upwards from the roots to the leaves in xylem.
True
Xylem and
phloem
work together to support the plant's overall health and development.
True
Transpiration creates tension that pulls water upwards in the
cohesion-tension theory
.
True
What are xylem vessels?
Hollow, tube-like structures
Match the xylem component with its function:
Xylem Vessels ↔️ Efficient upward transport of water
Xylem Tracheids ↔️ Alternative pathway for water transport
Xylem Parenchyma ↔️ Structural support and storage
Osmotic pressure in
phloem sieve tubes
draws in water, causing the solution to flow.
True
Companion cells regulate the nutrient flow in
sieve tubes
.
True
Xylem and
phloem
work together as an integrated transport system to support the plant.
True
What are the key substances transported by xylem?
Water and minerals
Match the component of xylem tissue with its function:
Xylem Vessels ↔️ Efficient water transport
Tracheids ↔️ Structural support
What is the primary function of xylem in plants?
Water and mineral transport
Phloem transports sugars downwards and laterally from source to
sink
.
True
What is the primary function of phloem in plants?
Sugar and nutrient transport
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