Plant Structure
What green pigment absorbs light energy for photosynthesis
Chlorophyll
What two raw materials are required for photosynthesis?
Carbon Dioxide and Water
What is used to test for starch?
Iodine (brown to blue/black)
What is the function of the stomata?
Allows carbon dioxide into the leaf and oxygen out of the leaf
True or False. Photosynthesis only occurs in the day
True
Where in the cell does photosynthesis occur?
Chloroplast
What gas is released by photosynthesis?
Oxygen
What is starch made of
What is the function of the waxy cuticle?
True or False: Only green plants perform photosynthesis
False - non-green plants use pigments other than chlorophyll and absorb light in different parts of the light spectra
What is the name for the opening in leaves where gases are interchanged?
Stomata
What is the name of the simple sugar produced by photosynthesis?
Glucose
What enzyme in the body breaks down starch?
Amylase (into maltose / glucose)
What is the function of palisade mesophyll cells?
Contains the most chlorophyll and is where the majority of photosynthesis occurs
True or False: Photosynthesis only works in sunlight and not with artificial light
False
What is the name given to a leaf which is both white and green?
Variegated
What is the energy conversion in photosynthesis?
Light energy to Chemical energy
What is the purpose of starch?
Starch acts as an energy store
What is the function of xylem vessels?
True or False: Almost all the oxygen we breath comes from photosynthesis
True: Half of the worlds oxygen comes from algae in the ocean and half comes from plants on land
Give one adaptation of the leaf for photosynthesis
Large surface area
Thin
Veiny to allow transport of nutrients and water to and from the leaf GGreen (contains chlorophyll)
What is the purpose of photosynthesis?
To produce food for the plant in the form of glucose
True or False: is starch only found in the leaf?
False - most plants store starch in dedicated storage organs such as tubers (potatoes), roots (carrots), bulbs (onion, garlic)
What is the funciton of spongy mesophyll cells?
Absorb extra sunlight and create air spaces for carbon dioxide
True or False: Chlorophyll absorbs green light?
False: chlorophyll is green because it reflects green light and does not absorb it