Photosynthesis

·      What is it?

   A series of chemical reactions in which carbon dioxide and water are converted in the presence of light to carbohydrate (sugar) and oxygen

   6CO₂ + 6H₂O à C₆H₁₂O₆ + 6O₂

 _{List inputs and outputs}

  Inputs: CO₂  and H₂O

   Outputs: C₆H₁₂O₆ + O₂

·      Where does it take place?

   Chloroplasts: are organelles found in plant cells that conduct photosynthesis

·      Function of the sun?

o   Plants use the sun's energy to power chemical reactions that combine water with the air's carbon dioxide to form starchy carbohydrate à main source of plant nutrition

Respiration

·      What is it?

  Process by which stored organic materials (carbohydrate, protein, fat) are broken down into simple end products (CO₂  and H₂O) with a release of energy for plant growth and development

o   C₆H₁₂O6 + 6O₂ = 6 CO₂ + 6 H₂O

·      What types of cells, tissues, organs does respiration happen in?

 Once oxygen and glucose are available, respiration can take place within any cell

§  Each cell contains one or more mitochondria à specially designed to convert the oxygen and glucose into energy.

Transpiration

·      What is it?

The loss of water from the plant through the leaves in the vapor form

·      Where does it happen?

 Leaves

§  when stomata are open for the passage of CO₂ and O₂ during photosynthesis

·      What vascular tissue is involved

o   Xylem

·      What is the function of root hairs in this process?

  Water passes from soil to root hairs through osmosis 

o   Carbon (C)

o   Hydrogen (H)

o   Oxygen (O)

o   Nitrogen (N)

o   Phosphorus (P)

o   Potassium (K)

o   Magnesium (Mg)

o   Calcium (Ca)

o   Sulfur (S)