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Bio 121 Lab > First Lab Exam > Flashcards

First Lab Exam Flashcards

(73 cards)

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1
Q

Contribution made by solutes

A

osmotic potential

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2
Q

Contribution made by pressure

A

pressure potential

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3
Q

Contribution made by water-binding colloids and surface

A

matric potential

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4
Q

(T/F)

Osmotic potential can be omitted

A

F

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5
Q

(T/F)

Matric potential can be omitted

A

T

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6
Q

Contribution made by gravity. Often omitted because it applies only to tall trees

A

gravitational potential

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7
Q

Osmotic potential is always _______ in value

A

negative

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8
Q

Pressure potential can be ____, _____, or _____ in value

A

positive, negative, zero

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9
Q

The sum of water potential is negative in value except in ____ cells

A

turgid

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10
Q

3 common procedures to measure water potential

A

weight change method, plasmolysis and chardakov method

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11
Q

What solution is being used in weight change method?

A

non-electrolyte solution

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12
Q

The main goal of weight change method is to find a solution where the weight and volume of the tissue ______ change

A

does not

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13
Q

Example of non-electrolyte solution

A

mannitol

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14
Q

What is used to make potato cylinders?

A

cork borer

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15
Q

how many test tubes were used in WCM?

A

12

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16
Q

Size of potato cylinders in cm

A

1

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17
Q

What is being calculated in weight change method?

A

% change in weight

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18
Q

icRT is a formula of ______________ _____________

A

osmotic potential

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19
Q

What is being determined by plasmolysis?

A

osmotic potential

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20
Q

How many minutes are the leaves immersed in the prepared solution in plasmolysis?

A

10

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21
Q

What section is being cut to be observed under microscope in plasmolysis?

A

epidermis

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21
Q

What is being determined in Chardakov method?

A

water potential

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22
Q

(T/F)

Leaves are placed in the duplicate solutions

A

F

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23
Q

What crystals are added in test solutions in Chardakov method? (2 answers)

A

methylene blue crystals, bromophenol blue crystals

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24
Other term for water holding capacity?
saturation point
25
Minimum amount of water that prevents plant from wilting permanently?
permanent wilting point
26
Term for "above WHC"
oversaturation
27
The WHCs used in the experiment were: ___%, ____%, ____%, and ____%
30, 60, 100, 120
28
What parameters were measured after 3 weeks in WHC experiment? (4 answers)
shoot length, shoot DW, root DW, leaf area
28
Green plants exhibit _____ mode of nutrition
autotrophic
29
Plants can synthesize _____ with the use of CO2, light, water, and inorganic materials
carbohydrates
30
____ out of 90 elements in the Earth's crust are useful to plants
12
30
Inorganic materials are from _____ of parent rocks
weathering
31
What are the macronutrients?
nitrogen, potassium, phosphorus, calcium, sulfur, magnesium
31
What are the micronutrients
manganese, molybdenum, zinc, copper, boron
32
What is in-between macro and micro?
iron
33
(T/F) Macronutrients are more important that micronutrients
T
34
What are the 3 setups that can be used in inorganic nutrition experiment?
hydroponic, aeroponic, nutrient film
34
The pH in inorganic nutrition experiment should be
6.5-6.8
34
2 drops of 0.05% __ are added every other day
Fe
35
What is being observed in inorganic nutrient setup
visual changes
35
Examples of visual changes
chlorosis, necrosis
35
Solutions used in mechanism of guard cell movements: KCl, ____, ChCl, ______
mannitol, ABA
35
In mechanism of guard cell movement, which part of the leaf is soaked in the solution?
epidermal strips
35
in mechanism of guard cell movement, how many hour/s are the epidermal strips submerged to the solution?
1
36
Movement of water across a semipermeable membrane, which is usually caused by concentration gradient
osmosis
36
Movement from osmosis is from ____ concentration of water to ____ concentration of water
high, low
36
Shrinkage of the protoplasm
plasmolysys
36
Neither turgid nor completely plasmolyzed "About to be plasmolyzed"
incipient plasmolysis
36
Isotonic =
flaccid
36
Hypertonic =
plasmolyzed
37
Hypertonic =
turgid
38
Vigna unguiculata is from family _____
fabaceae
39
Common name of bush sitao
black-eyed pea
40
Longest shoot lengths are at ____% WHC
60
41
Longest root lengths are at ____% WHC
30
42
Shortest shoot lengths are at ____% WHC
120
43
Shortest root lengths are at ____% WHC
60
44
(T/F) Longer root lengths are produced in lower % WHC
T
44
Drought: retain water Flood: reduce _______ consumption
oxygen
45
Root and shoot DW are highest at ___% WHC
60
46
Root and shoot DW are lowest at ___% WHC
100
47
Biggest leaf area is produced in ___% WHC
60
48
Guard cells are located in the leaf _______
epidermis
49
Guard cells surround the ______
stoma
50
Light induces stomatal _____
opening
51
Dark induces stomatal ________
closing
52
Potassium ions and distilled water induce stomatal ___________
opening
53
ABA induces stomatal _________
closing
54
Involves CO2 absorption and O2 release
photosynthesis
55
Mannitol, ChCl, and ABA induce stomatal _______
closing
56
Exogenous =
outside
57
Endogenous =
inside

Bio 121 Lab (1 decks)

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