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25 questions
Sieve tubes and companion cells are present in
xylem
phloem
cambium
cork
The only dead cells in phloem
companion
sieve
phloem fibres
phloem parenchyma
Select which of the following statements are true for xylem.
Tubular shape with no cross walls.
Transportation of food and nutrients.
Elongated, tubular shape with thin walled sieve tubes.
Occupy the center of the vascular bundle.
Water and mineral transport from roots to aerial parts of the plant.
The main function of a xylem cell is
To transport nutrients (mainly sucrose) to different parts of a plant.
To make energy for the plant via photosynthesis.
To transport carbon dioxide to the leaves for photosynthessis.
To transport water to different parts of plant.
Recall what is dissolved in the water in the xylem.
Glucose
Amino acids
Mineral ions
Starch
How is the pathway of water from roots to leaves is called.
Respiration
Translocation
Transpiration stream
Evaporation
Recall what substance is used to thicken and strengthen xylem walls in woody plants.
Protein
Mineral ions
Lignin
Glucose
Select the correct term for the following definition:
"The nutrient transport system in plants."
Enzyme
Guard cells
Phloem
Proteins
Recall that the movement of food in the phloem is called.
Translocation
Transpiration stream
Evaporation
Respiration
Two cells that regulate the size of the stomata depending on temperature and
water conditions
Phloem
Xylem
Stomata
Guard Cells
A large number of elongated cells that
grow out from the roots. They absorb water and minerals from the soil
via osmosis.
Root Hairs
Stomata
Guard Cells
Pholem
How does water enter a plant?
through the stomata
through the roots
by active transport in root hair cells
by osmosis in root hair cells
Xylem tubes are made of...
Dead cells
Living cells
Phloem tubes transport substances in which direction?
Up
Up and down
Why glucose converted to sucrose before translocation occur?
Sucrose is large molecule
Sucrose is non-reducing sugar
Sucrose is reducing sugar
Sucrose is insolluble in water
What is the important of companion cell between source and sieve tube?
Provide glucose for active transport
Provide ATP for active transport
Provide ATP for passive transport
Provide glucose for passive transport
What happen to the osmotic pressure in sieve tube due to high concentration of sucrose?
Increase
Decrease
No change
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