1.
Transpiration and it’s significance
(Multiple choice questions)
Team members
Devadharshini.p
Dhivya.v
Dhivya.h
Divya J K

2.
1. The surface of the leaf bears the large number of pores are
Called
A) hydathodes B) lenticels C) stomata D) cuticle
2. Which layer is inelastic in guard cells and which layer Is
elastic in nature
A) Inner& outer Layer B) outer&inner layer C) all of the above
3. True or false
Statement: the stomata containsthe a chlorophyll But their function is
uncertain true
4. Stomata was discoveredby Whom
A) Dalton B) porter (et al) C) JulienJoseph vesque D) none

3.
5. The rate of transpiration will be more When the
A) atmosphere is dry. B) Temperature high C) humidity high.
D) bothAandB
6. One of the internal factor which affects the rate of transpiration is
A) big size of the leaf. B) sunken stomata c) size of the stomata
D) all of the above
7. Name the wax like layer which reduces the transpiration
A)upper epidermis B) lower epidermis. C) cuticle D) none of the
Above

4.
8. Most of the transpiration occurs in tall trees through
A) Stomata. B) cuticle C) lenticel. D) bark
9. the transpiration Occurs in tall trees in which part
A)Leaf B) root C) stem D)all the above
10.Odd one out:
A) Gravimetric method. B) lysimeter method. C) porometer
D) peel method
11.The substance which can reduce transpiration without much
much effect on CO2 fixation
A) transpiration. B) evaporation. C) anti-transpirant. D) respiration

5.
12. How many types of anti-transpirant are there
A) 5. B) 4. C) 3. D) 2.
13. Hexadeconol - is an example for which type of anti-transpirant
A) metabolic poison. B) Film Forming type. C) stomatalclosing
14. The process of photophosphorylation in guard cells are inhibited
by which substance
A) CCP
. B) kaoline. C) Farnesol. D) Phenylmercuric acid
15. The substance that decrease the transpiration Without decreasing
Photosynthesis
. A) Kaoline. B) salicyladoxime. C) Farnesol. D) PMA

6.
16.Potometer and clinostatare used to study
a) photosynthesisand respiration
b)transpiration andgrowth
c)phototropism and geotropism
d) transpiration and geotropism
17.The rate of transpiration will be high when there is?
a)Rainyseason.
c) Summer season.
b)winter season
d)none of these
18.Which type of transpiration ismore common-
a)Cuticular.
c) Lenticular.
b)stomatal
d)bark transpiration
19.Maximum transpiration is taking place through
a) Stomata. b) lenticel. C) Hydathode. D) cuticle

7.
20.The inter conversion of sugar& starch is dependent on pH changes in the guard cells was
demonstrated by
a)Levitt.
c)Sayre.
b) Lloyd
d)steward
21.The spray of PMA causes :-
a) Decrease in transpiration
b) Increase in transpiration
c) Increase in absorption
d) Increase in guttation
22.Which chemical is used to detect transpiration comparatively?
a) Calcium carbonate.
C) Cobalt chloride.
b) cobalt carbonate
d)mercuric acetate
23.Active K+ ion exchange mechanism of opening and closing of stomata was given by:-
a)Khorana. B)scrath
D)kohli

8.
24.Cuticular transpiration is observed mainly in:-
a)Xerophtes.
c)Trees.
b) herbaceous plants
d)shrubs
25.Whatis action spectrum of transpiration?
a)Green and uv
c) Blue and far red.
b)blue and yellow
D) blue and red
26.In which of the following plants, the metabolism will be hindered if upper surface of leaves are
coated with wax?
a)Hydrilla.
c)Vallisneria.
b)nelumbium
d)Utricularia
27.Which of the following substance serve as an anti-transpirant in Plant?
a)Phenyl mercuric acetate.
c) Silicon oil.
b)asprin
d)all of these

9.
28.Which of the factors act as anti-transpirant
a)SO2.
c) CO2.
b)CO
d)All pollutant gases
29.Transpiration is a non-enzymatic process it’s Q10 value is :-
a)1.
c)3.5.
b)2
d) zero
30.The most important factor affecting transpiration is
a)Light.
c)Wind.
b) temperature
d) atmospheric humidity

10.
31.The number of stomata per unit area of the leaf is called as
a)Stomatal frequency b) stomatal index
c)Stomatal ratio. d)stomatal aperture
32.The stomatal index and frequency can be estimated by a method
a)Plate method. b)agarose method
c)Replica method. d)none of the above
33.The stomata found only on lower epidermis of the leaves
a)most wood plant b)oak
c)apple. D)all of these
34.The stomata found only on upper surface of the leaf is called
a)Epistomatous plants. B) amphistomatus plants
c)Hypostomatous plants. D) none of these
35.Stomata found equally on both the surfaces of leaves
a)Potato type. B)oat type
c)Water lily type d)potamogeton type

11.
36.The stomata are open throughout the day and night except for a few hours in the evening
a)Onion. B) cabbage. C) pumpkin. D) all of these
37.The exudation of droplets of liquid water from the margins and tips of leave is a
phenomenon
a)Guttation. B) transpiration
C) Evaporation. D) respiration
38.water lost by guttation occurs through marginal leaf through
a) Stomata. B) lenticel
c)Cuticle. . D)hydathodes
39.The dropping and sagging of plant tissues especially in leaves and it is called
a) Wilting. B) imbibition
C)plasmolysis. D) none of these
40.Stomata are more widely open in………..
a) Green light b) Blue light
c). Yellow light. D) Far red light.

12.
41.Exudation of water droplets from the leaf tips is called as ______.
(a) Transpiration (b)Guttation (c) Evaporation (d) Exosmosis
42.Who proposed the term guttation ?
(a)Burgerstin (b)Haberlandt (c)Sayre (d)Zelitch
43.Guttation occurs through ______.
(a)Stomata (b)Guard cells (c)Hydathode (d)Pores
44. ______ reported 2 types of hydathode .
(a)Haberlandt (b)Lloyd (c)Zelitch (d)Burgerstin
45.Water is secreted by the force within the cells in the ______ hydathode.
(a)Passive (b)Epithem (c) Inactive (d)Active
46. ______ is expression of the root pressure.
(a)Stomatal opening (b)Guttation (c)Evaporation (d) Respiration
47.Which of the following is a constituent of guttation fluid ?
(a)Glutamine (b)Fat (c)Amino acid (d)Auxin

13.
48.Decrease in light intensity and photosynthesis results in ______.
A)Stomatal closing B)Endosmosis C)Stomatal opening D) Increased turgor
49.The starch content of epidermal and mesophyll cells are high in ______.
A)Light B)Dark C)Low pH D) Hydrolysis
50.Starch- sugar hypothesis was proposed by ______.
A)Zelitch B)Haberlandt C)Levitt D)Lloyd and Sayre
51.Low pH favours _____ of stomata.
A)Closing B)Opening C)Both A&B D)None
52.Hydrolysis of starch to sugar results in ____ in osmotic potential and ____ in turgor
pressure.
A)Decrease,decrease B)Increase,decrease C)Decrease,increase D)Increase, increase
53.Glucose-1- phosphate ______ Glucose-6-phosphate.
A)Phosphoglycomutase B)Phosphorylase C)Phosphatase D)Hexokinase
54.Theory of Glucolate metabolism in stomatal regulation is given by ______.
A)Levitt B)Zelitch C)Haberlandt D)Lloyd

14.
55.Bowling suggested ______ hypothesis.
A)Starch-sugar B)Proton transport theory C)Malate Switch D)Glycolate metabolism
56.Excess malate production in cytoplasm results in stomatal ______.
A)Closing B)Opening C)Both A&B D)None
57.Carboxylation of PEP at low CO2 concentration produces ______.
A)Malate B)Glycolate C)Phosphate D)Glyoxalate
58. ______ theory states that stomatal movement is the result of an active transport of K+
ions.
A)Malate switch B)Glycolate merablism C)Starch-sugar D)Proton transport theory
59.Proton transport theory was proposed by ______.
A)Lloyd B)Levitt C)Zelitch D)Burgerstin
60.In ______ the stomata remains close during the day.
A)Heterotrophs B)Autotrophs C)Lichens D)Succulents