BIO 201: Botany – Fall 2011
REVIEW - LAB QUIZ 3
Be able to identify any stem section as to monocot or dicot, woody or herbaceous, root or stem
Corn (Zea) stem (x.s.): cortex, epidermis, phloem, sclerenchyma, vascular bundle, xylem
Alfalfa (Medicago) stem (x.s.): cambium, cortex, epidermis, phloem, pith, vascular bundle, xylem
Sunflower (Helianthus) stem (x.s.): cambium, cortex, epidermis, phloem, pith, vascular bundle, xylem
Pine (Pinus) stem (x.s.): annual rings, bark, early wood, late wood, pith, resin canals, xylem, vascular rays
Identify radial, tangential, and cross sections of the pine.
Basswood (Tilia) stem (x.s.): cambium, cork, cortex, epidermis, growth rings, phloem, pith, 1o xylem, 2o xylem, vascular rays
Recognize the difference between softwood & hardwood cross sections.
Trunk sections (pine and elm): bark, growth rings, 2o xylem
Corn (Zea) root (x.s.): casperian strip, cortex, endodermis, epidermis, pericycle, pith, vascular bundle
Buttercup (Ranunculus) root (x.s.): casperian strip, cortex, endodermis, epidermis, pericycle, pith, vascular bundle
What is the purpose of chromatography?
What are the pigments separated on the chromatogram?
Be able to identify the pigments by color and position.
Contrast the three leaves we studied relative to: a) color, b) presence of pigments
What is the relationship between leaf color and chromatogram color patterns?
Which leaves had more chlorophyll a?; Chlorophyll b?
PHOTOSYNTHESIS AND LEAF PIGMENTS: ABSORPTION SPECTRUM
What is an absorption spectrum?
How does reduced chlorophyll content effect the spectrum graph?
What is the relationship between leaf color and the resultant absorption spectrum?
Why doesn't the green leaf produce a good fit to the "action spectrum" of the book?
SEED GERMINATION – SALINITY
What is the maximum salinity that will allow for normal radish germination?
What is the maximum salinity that will allow for normal radish early root elongation?
Read a graph to determine the above.
What was the value of repeating the experiment?