Grade 10 Unit 4 Flashcards
…….. open and close to control the entry of carbon dioxide into the leaf and also to control the loss of water by transpiration
guard cells
………… allow carbon dioxide to diffuse into the leaf and oxygen and water vapour to diffuse out
stomata
Where does water lost in transpiration evaporates from the cells
Spongy mesophyll
use the …… microscope to study the internal structures of leaves
light
the hollow cells of a plant that transport water and minerals to plant cells
xylem
What’s z color of iodine solution?
Reddish brown
A common way of demonstrating that a plant has or has not carried out photosynthesis is ……
to test a leaf for the presence of starch
The process of eliminating starch reserves from a plant by depriving it of light
destarching
plants with the habit of reviving after seeming to be dead
resurrection plants
What shows that the oxygen gas produced during photosynthesis comes from the splitting of the water molecules using light energy
Supplying plant with ‘heavy water’ containing 18O isotope of oxygen
T/F
You cannot demonstrate that water is required for photosynthesis just by depriving the plant of it
T
……… have areas that contain chlorophyll and areas that do not
Variegated leaves
chlorophyll-free regions are usually ………. in colour
yellow or creamy-white
T/F
Chlorophyll isn’t really green
T
Water moves across the tissues of a plant by …….
osmosis
