Plant Transport Systems
Plant tissue that transports water and minerals from roots to leaves
What is xylem
The plant hormone that causes fruit ripening
What is ethylene gas
The process by which water enters root cells from the soil
What is osmosis
Tiny pores on leaves that allow gas exchange and water loss
What are stomata
The movement of sugars through the plant
What is translocation
The plant tissue that transports sugars and nutrients throughout the plant.
What is phloem
Hormones that promote stem elongation and seed germination
What are gibberellins
The upward movement of water due to evaporation from leaves
What is transpiration
The waxy layer that reduces water loss from leaves
What is the cuticle
The loss of water vapour from leaves
What is transpiration
Xylem transport mainly occurs in this direction
What is upward (from roots to leaves)
Hormones responsible for phototropism and cell elongation
What are auxins
What is transpiration pull
The structures that increase surface area for water absorption in roots
What are root hairs
The movement of water and minerals in plants occurs in this tissue
What is xylem
Phloem transports sugar from these sources to these sinks
What are sources (leaves) to sinks (roots, fruits, growing tissues)
Ethylene is unique among plant hormones because it is this
What is a gas
The cohesion-tension theory explains water movement using these two properties
What is cohesion and adhesion
The plant organ where photosynthesis mainly occurs
What is the leaf
The movement of sugars occurs in this tissue
What is phloem
Explain why xylem vessels must be strong and hollow
What is they must withstand tension from water pull and allow continuous upward flow without collapsing
Explain how auxins cause a plant to bend toward light
Auxins accumulate on the shaded side, causing cells there to elongate more, bending the plant toward the light
Identify the structures involved in water movement from roots to leaves
What is root hairs, xylem vessels, stems, leaves, and stomata
Explain why leaves are thin and flat
What is maximizing surface area for light absorption and gas exchange
Water enters through root hairs by osmosis, moves upward through xylem by transpiration pull, cohesion, and adhesion. Sugars produced in leaves move through phloem by translocation, from sources to sinks using pressure flow