Roots

1
Roots

• Take in oxygen during respiration.
• Absorb and translocate water.
• Store food as starch.
• Anchor the plant.
• Gives off CO2.
• Produce nitrogen in legumes.

2
Leaves

• Carries out photosynthesis.
• Transpiration.
• Stores some food.
• May be used for asexual propagation.

3
Stem

• Translocates water and nutrients from roots to
  leaves, and sugars and starches from leaves to
  roots.
• Stores food.
• Supports leaves, fruit, and flowers.
• Growth from the meristem of the terminal bud and
  lengthens the stem.
• Growth in the cambium layer thickens the stem.