2.3.2 Transport Systems in Plants

• What are the two primary tissues in the vascular system of plants?

  Xylem and phloem
• Phloem cells have thickened cell walls for structural support.

  False
• Phloem cells are living and joined end-to-end with sieve plates
• Why is water transport in xylem essential for plants?

  Photosynthesis and cell hydration
• What other organic compounds, besides sugars, does phloem transport?

  Amino acids, hormones
• The vascular system ensures the efficient distribution of water, nutrients, and energy throughout the plant.


  True
• Phloem transports sugars produced during photosynthesis to energy-requiring parts of the plant
• What is the phloem responsible for in plants?

  Translocation
• What is the primary function of xylem in plants?

  Water and mineral transport
• The phloem is responsible for the translocation of organic compounds, such as sugars, amino acids, and hormones
• Translocation in the phloem ensures the efficient distribution of energy and essential compounds in plants.


  True
• Match the factor with its effect on xylem or phloem transport:

  Water Potential ↔️ Creates tension in xylem and drives mass flow in phloem

  Transpiration ↔️ Generates pulling force in xylem

  Osmosis ↔️ Maintains pressure flow in phloem
• Transpiration indirectly influences phloem transport by affecting water potential gradients.


  True
• The phloem consists of living cells joined end-to-end with sieve plates.
• What are two primary functions of the phloem in plants?

  Organic nutrient transport and translocation
• What are the two primary tissues of the vascular system in plants?

  Xylem and phloem
• What is the primary role of the phloem in plants?

  Translocation of organic compounds
• The phloem transports organic nutrients from the leaves to other parts of the plant
• Translocation ensures the efficient distribution of energy and essential compounds in plants.

  True
• What is one key factor that affects xylem transport?

  Water potential
• Osmosis directly drives the mass flow of organic compounds through the phloem.

  False
• The phloem uses sieve plates and companion cells to facilitate pressure-driven mass flow
• The vascular system's adaptations ensure efficient resource transport for plant survival.


  True
• The xylem is made of dead cells forming continuous tubes
• What is the primary function of xylem in plants?

  Transports water and minerals
• Match the function of xylem with its description:

  Water Transport ↔️ Essential for photosynthesis

  Mineral Transport ↔️ Distributes nutrients from soil

  Structural Support ↔️ Helps plants stand upright
• The phloem in plants has two primary functions
• Match the function of phloem with its description:

  Transport of Organic Nutrients ↔️ Moves sugars from leaves

  Translocation ↔️ Distributes other organic compounds
• What is structural support provided by xylem vessels due to?

  Thickened, rigid cell walls
• The transport functions of phloem are crucial for the plant's growth and overall health.

  True
• Phloem transports organic nutrients from the leaves to other parts of the plant
• The vascular system in plants consists of xylem and phloem.

  True
• What types of organic nutrients are transported by the phloem?

  Sugars and amino acids
• Arrange the following plant parts in the order that organic compounds are transported to by the phloem during translocation.

  1️⃣ Leaves

  2️⃣ Roots

  3️⃣ Stems

  4️⃣ Flowers
• Lower water potential in leaves creates a tension
• What structural feature of xylem provides support to the plant?

  Thickened cell walls
• Xylem's structural support allows plants to withstand environmental stresses.


  True
• Phloem's transport functions are crucial for plant growth and health.


  True
• The xylem is responsible for transporting water and dissolved minerals
• The phloem transports sugars, amino acids, and hormones throughout the plant.


  True