[試題] 101上 王淑美 植物生理學 第一次期中考
課程名稱︰植物生理學
課程性質︰
課程教師︰王淑美
開課學院：生命科學院
開課系所︰生命科學系
考試日期（年月日）︰2012.10.17
考試時限（分鐘）：120
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
I. Fill in each blank(1 point for each blank)
1. Give the name of a model plant which is the most popular for the prevailing
scientific research:______________________
2. Water is an excellent cooling agent for plants dissipating excess solar
energy, because water possesses the following property: [a. high melting
point; b. high specific heat; c. high boiling point; d. high latent heat;
e. high conductivity]
3. In general, water movement in soil-plant-atmosphere continuum is driven by
___________. For an active cell, _________potential and _______potential are
the 2 major component of its water potential. For a dry seed, one more
component of water potential has to be considered and it contributes to the
initial water absorption very much during seed imbibition: ____________
4. A membrane protein that serves as a water channel is called ______________
5. Plant roots have to absorb water from soil. Water availability is the most
important factor affecting pant growth and crop yield. The maximum amount of
water available for plant grown in soil is the difference between__________
and _____________.
6. The association of plant root and fungi is called _____________. There are 2
type of these association, namely ________ and _________. These association
is very helpful for plant growth sue to the expansion of __________ and
P-solubilization.
7. It is well known that the deficiency of essential elements will severely
affect the normal growth of plants. When chlorosis appears in interveinal
areas of soybean young leaf first and the leaf eventually became pale color,
you may conclude that the plant is deficient in ___________.
8. Give 3 mineral elements that can not be retranslocated via phloem:__________
9. According _________ equation and observed ion concentration inside plant
cells, one can predict the movement mechanism of this given ion across
plasma membrane being via diffusion or active transport. Please give the
equation: __________________
10.A living cell must be able to maintain its cell membrane potential via the
action of electrogenic pumps. In plants, the major electrogenic pump
responsible for maintenance of membrane potential is ________________
11.Many plant physiological events are affected by the water status, among
following processes, which one is the most sensitive to the hardship of
water supply [a. photosynthesis; b. protein synthesis; c. stomatal closure;
d. cell expansion; e. leaf wilting]:_____________
12.Roots are major organ responsible for water absorption. The major resistance
of root to water absorption from soil is located at __________(a specialized
tissue)
13.The resistance of leaf transpiration contains 2 dynamic determinants,______
and ___________. In windy day, __________resistance is dramatically reduced.
14.16 mineral elements are essential for plant growth. List elements in the
order of amount needed for plant growth: N>__>__>Mg>P>__>Si>Cl>Fe>B>Mn>Na>__
>Cu>Ni>Mo
15.In what range of soil pH, the availability of minerals is optimal for most
plants:________
16.Make a comparisn between plasma membrane H+-ATPase and vacuolar H+-ATPase:
------------------------------------------------------------------------------
P-type H+-ATPase V-type H+-ATPase
------------------------------------------------------------------------------
Protein structure ? multimeric protein
------------------------------------------------------------------------------
Inhibit by ? ?
------------------------------------------------------------------------------
H+-pumping efficiency 1 H+ pump per ATP consumed ?
------------------------------------------------------------------------------
17.The concentration of Ca2+ in cytosol is very low and under tight regulation.
Most of cellular Ca2+ are sequestrated in __________ and ER.
18.Among photosynthesis-related pigments, __________ and _________are essential
for sustaining photosynthetic machinery and universal occurrence in plants
and algae.
19.There is big difference in absorption efficiency of Ca2+ along different
regions of root. Which part of root generally performs the best absorption
efficiency.______[a. root hairs; b. maturation zone; c. elongation zone;
d. root cap; e. apical meristematic region]
20.Chelating agents are usually added to nutrient solution in water culture for
preventing essential elements from precipitation. What type of ion can be
protectedby chelators: _____________. Could you give popular synthetic
chelator:_________________
21.The light intensity of full sunlight is about_______________.Name 2
photoreceptors of blue light: _________________and____________.
22.When you conduct water culture, what major parameters you have to consider:
pH-stat, _____________ and ________________.
23.The most apparent deficiency symptoms of essential elements: chlorosis and
__________.
24.Can you learn the value of osmotic potential for a given solution? Give the
quation you sued:________________
25.Give the name of well-known plant pigment that can signal red light or
far-red light, also express photoreversibility:_____________
26.Plants lose water mainly by transpiration. In addition to stomatal
transpiration, _____________ and lenticular transpiration also exist. Plants
also lose water through hadathodes via liquid form, this phenomenon is
called _________
27.If transpiration rate exceeds root uptake of water, there may be a__________
of the stomates.
28.Tracheids and vessels are different water conducting cells. The conducting
efficiency of vessels is much higher than tracheids. One of reason is water
must pass ___________ between tracheid elements in its flow path, but water
can freely pass _______________ between vessel elements.
II. Short eaasy(5 points for each)
1. By what strategies plants may overcome iron stress(deficiency)?
2. A leaf looks purple because of the presence of anthocyanin in its epidermal
tissue. Can this leaf perform good efficiency in photosynthesis? Why?
3. Based on what evidences, plant scientists accept the existence of active
xylem loading?
4. Stomatal aperture is increased when guard cells take up a tiny amount of
water and turn rigid. Why?
5. Describe differences of luxury consumption,toxification and phytoremediation
6. By what meanings plants can minimize the impact of cavitation and embolism
occurred in xylem system?
7. What does "soil fertility" mean? Why acid rain can badly reduce the soil
fertility?
8. To explain why leaf transpiration contribute most to the water ascent in
plant body.
9. To compare the primary active transport and secondary active transport?
10.What are proteoid roots? Briefy describe their functions?
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