growth/stem cells

• xylem vessel

  carries water to the plant from root/leaves ( hollow tibe made of dead cells
• guard cells

  at the bottomof the leaf, allows air to go in and out

  usually opens in the day (hole in leaf stomach)

  closes at night
• palisade cells

  has a lot of chloroplasts

  top part of leaf

  carrys out photosynthesis
• meristems

  at tip of root or shoot,

  mitosis occurs here

  cells will then elongate and differentiate into different types of cells
• spongy mesophyll

  in leaves

  allows gases to exchange and circulate for exchange of gases between leaf and the environment

  carries out photosynthesis
• sieve tubes

  carries products of photosynthesis including sugars and amino acids from leaf to where they are needed
• comparison cell

  provides the energy requiered to tranposrt substances in seive tube

  in the phloem