WorksheetsDP 9.1 Plant Biology
Total questions: 10
Worksheet time: 6mins
The casparian strip causes:
Water to move through plasmodesmata
Water to move from the apoplastic to symplastic pathway
Water to move from the cytoplasm to the cell wall
Water to be actively transported with cations in the soil
Which of the following is NOT an adaptation of the structure of the leaf?
Waxy cuticle to prevent evaporation of water
Palisade mesophyll cells concentrated on the bottom of the leaf to maximise photosynthesis
Stomata found on the underside of leaves to reduce transpiration
All are adaptations
How are minerals transported into root hair cells?
H+ are pumped into the soil to create a concentration gradient for minerals to diffse into the roots
H+ are pumped into the soil and bind to positively charged ions before being pumped into the roots.
H+ are pumped into the soil to displace cations from soil. Cations are pumped into root hair cells.
The high surface of root hair cells.
(Select all that apply) Xylem vessels are found in:
Roots
Stems
Leaves
What strengthens the walls of xylem to prevent their collapse?
Tracheids
Endodermis
xylem vessels
lignin
What is the function of xylem?
Transports water for photosynthesis
Transports water and minerals bidirectionally to plant tissues that require them.
Transports water and minerals unidirectionally from the roots to the leaves of plants.
Transports hormones, amino acids and surcrose for storage
What is transpiration?
Perspiration of excess water in plants
The loss of water due to photosynthesis
The rate of water update
The loss of water vapour from the stomata of plants
K+ ions diffuse out of guard cells. What will most likely happen immediately after?
Water will diffuse out of guard cells
Stomata will open
Stomata will close
Water will diffuse into guard cells
The vascular bundle is made up of:
Xylem
Casparian strip
Phloem
Root hair cells
Which statement is false?
Mature xylem is non-living
Transpiration is a consequence of gas exchange
Xylem facilitates movement of water bidirectionally
Most water enters a plant via the apoplastic pathway
