1.5 Transport System - Plants

• Name the tissue that transports water and minerals up a plant.

  Xylem
• Name the tissue that transports sugar around a plant.

  Phloem
• Name the mineral found in xylem that allows it to withstand the pressure changes as water moves through the plant.

  Lignin
• What is transpiration?

  The loss of water through stomata of the leaves (by diffusion).
• Which cells are responsible for opening and closing the stomata?

  Guard cells.
• Where are stomata (and therefore guard cells) usually located in a leaf?

  In the lower epidermis.
• What is the function of mesophyll cells in the leaf?

  They photosynthesise
• What tissue is responsible for transporting sugar up and down the plant?

  Phloem
• Which of the following tissues contain living cells?

  a) xylem

  b) phloem

  Phloem
• Name the two cell types found in the leaf that are responsible for the most of the photosynthesis that takes place in a plant.

  Spongy mesophyll and palisade mesophyll.
• Which substances must be absorbed into the bloodstream to be delivered to cells for respiration?

  Oxygen and nutrients from food (e.g. glucose)
• Which materials must be removed from cells into the bloodstream?

  Waste substances like carbon dioxide.