PLANT ANATOMY LAB 7
PROTECTIVE SYSTEMS

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(49 Points)

IA and IB.  Protection against water loss.   In regard to the relative roles that wax, epidermis and periderm play in inhibiting water loss from plants I hypothesize that in this experiment  the ranking for the rate of water loss between the different treatments will be   ___________ because ________.  Therefore, I expect that _______.  (10 Points)

Below are my data for the effects of wax, epidermis, and periderm on rates of water loss:
NB.   You can spawn a QuatroPro or Excel Spreadsheet Template if you wish.
 
SPECIES
Malus sylvestris Fruit
Solanum tuberosum tuber
TREATMENT
CONTROL
- WAX
- EPIDERMIS
CONTROL
- PERIDERM
Day measured
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
 
F.W. Change
in F.W.






























 
F.W Change
in F.W.






























 
F.W Change
in F.W.






























 
F.W Change
in F.W.






























 
F.W Change
in F.W.






























 

I'm a powerful computer user, so , I've graphed, imaged, and linked summaries of the above data in the Table below!  -All without using a single piece of paper!  (12 Points)
 




From an analysis of my data, I ____ my initial hypotheses regarding the effects of wax, epidermis, and periderm on protecting plants against excessive water loss.  These conclusions are backed up by the following observations about my data :  _________  (6 Points)

IC.  Here is my labeled image of the Abscission Zone from ________:
 
 
 (6 Points)

IIA.  The trichomes I observed in ________ were _________. (2 Points)

IIB.  Prickles are modified ________, whereas Spines are modified _______.  The reason that these structures are so stiff is because ______. (4 Points)

IIC.  I observed the following types of sclereids in the indicated seeds:
 
SPECIES TYPE OF SCLEREID
Phaseolus  (2 Points)
Pisum (2 Points)

IIIA.  I estimate that the trichome density is _______ in my ________ shoot buds.  I noticed that resin was/was not associated with the bud scales of this species.  The predominant cell type within the bud scales was __________.  As the leaves expand from the bud, trichome density ______.(5 Points)