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Quiz 12
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Q.1
Which is incorrect option for cytokinin ?
0%
a) Increases dominance of apical bud
0%
b) Retards senescence
0%
c) Stimulates cell division
0%
d) Secreted in the region of active cell division
Explanation
Answer:(a)
Q.2
Which group is correct for the growth inducer hormone ?
0%
a) ABA, Ethylene
0%
b) IAA, ABA and cytokinins
0%
c) IAA, Gibberrelin, cytokinins
0%
d) IAA, Gibberrelin, ABA
Explanation
Answer:(c)
Q.3
Which type of dormancy is induced in seeds due to adverse condition and high temperature ?
0%
a) Combinational dormancy
0%
b) Secondary dormancy
0%
c) Exogenous dormancy
0%
d) Endogenous dormancy
Explanation
Answer:(b)
Q.4
Match the list :
Column I
Column II
(P) Volvox
(i) Chemotaxis
(Q) Mimosa
(ii) Phototaxis
(R) Antherozoids of bryophytes
(iii) Movement / tropism
(S) Leaf tendril
(iv) Thigmotropism
0%
a) (P-i), (Q-ii), (R-iii), (S-iv)
0%
b) (P-ii), (Q-iii), (R-iv), (S-i)
0%
c) (P-ii), (Q-iv), (R-i), (S-iii)
0%
d) (P-iv), (Q-iii), (R-ii), (S-i)
Explanation
Answer:(c)
Q.5
Which type of meristematic tissue is found in monocot plant for growth ?
0%
a) Intercalary meristematic tissue
0%
b) Lateral meristem tissue
0%
c) Meristematic tissue
0%
d) Apical meristem tissue
Explanation
Answer:(a)
Q.6
Which is required to inhibit germination of food storing part of potato ?
0%
a) IAA
0%
b) IBA
0%
c) ABA
0%
d) GA
Explanation
Answer:(c)
Q.7
Which hormone inhibits formation of new cells ?
0%
a) Kinetin
0%
b) Abscisic acid
0%
c) Gibberrelic acid
0%
d) Indol-butaric acid
Explanation
Answer:(b)
Q.8
In which phase of growth size of vacuole increases ?
0%
a) cell difterentiation
0%
b) Cell elongation
0%
c) Cell transfer
0%
d) Cell formation
Explanation
Answer:(b)
Q.9
A : Adventitious roots develop by auxin in plants. R : Auxin, removes the dominant effect of apical bud.
0%
a) A and R both correct, R is explanation of A.
0%
b) A and R both correct but R is not explanation A.
0%
c) A = correct, R = false
0%
d) A = false, R = correct
Explanation
Answer:(b)
Q.10
Which hormore is essential for initial growth of root ?
0%
a) IBA
0%
b) Kinetin
0%
c) GA
0%
d) ABA
Explanation
Answer:(a)
Q.11
Which of the following stimulates growth in the internode region ?
0%
a) Gibberrelin
0%
b) Cytokinin
0%
c) Abscisic acid
0%
d) Auxin
Explanation
Answer:(a)
Q.12
Which of the following sustance is not related with initiation of growth ?
0%
a) Cytokinin
0%
b) Gibberrelin
0%
c) ABA
0%
d) IAA
Explanation
Answer:(c)
Q.13
Which type of dormancy is found when seed is impermeable to water or gaseous exchange ?
0%
a) Mechanical dormancy
0%
b) External dormancy
0%
c) Physical dormancy
0%
d) Chemical dormancy
Explanation
Answer:(a)
Q.14
Which of the following is increased in plants as a result of growth ?
0%
a) Width
0%
b) Dry volume
0%
c) Dry weight
0%
d) Number
Explanation
Answer:(c)
Q.15
What is A and B in the given figure ?
0%
a) Death and senescence
0%
b) Death and Growth
0%
c) Growth and death
0%
d) Senescence and death
Explanation
Answer:(d)
Q.16
Which is the specific use of synthetic auxin in higher concentration ?
0%
a) Inhibits growth of lateral buds
0%
b) Weedicide
0%
c) Inhibits initial process of root formation
0%
d) Regulates cell elongation
Explanation
Answer:(b)
Q.17
Which organic chemicals are included in shoot with photoperiodism ? (AIIMS-1996)
0%
a) Auxin
0%
b) Ethylene
0%
c) Cytokinin
0%
d) Gibberrelin
Explanation
Answer:(d)
Q.18
Garland of green leaves remain green, by treatment of which organic chemical ?
0%
a) Auxin
0%
b) Gibberrelin
0%
c) Cytokinin
0%
d) Ethylene
Explanation
Answer:(c)
Q.19
During physiological and physical condition some changes observed in seed, is knows as ......
0%
a) Combinational dormancy
0%
b) Secondary dormancy
0%
c) Exogenous dormancy
0%
d) Endogenous dormancy
Explanation
Answer:(a)
Q.20
Which of the following is an example of thermonasty ?
0%
a) Mimosa
0%
b) Sunflower
0%
c) Crocus
0%
d) Lotus
Explanation
Answer:(c)
Q.21
Which of the following organic chemical is synthetic ?
0%
a) 2-4-D
0%
b) IBA
0%
c) IAA
0%
d) GA
Explanation
Answer:(a)
Q.22
Which type of growth is seen in plants?
0%
a) Local
0%
b) Reversible
0%
c) Irreversible
0%
d) Increase in volume
Explanation
Answer:(c)
Q.23
Which of the following is long-day plant ?
0%
a) Oat
0%
b) Soyabean
0%
c) Vinca
0%
d) Paddy
Explanation
Answer:(a)
Q.24
How can a biannual plant be converted into an annual plant?
0%
a) By giving more light
0%
b) By cold process of seeds
0%
c) By giving more temperature
0%
d) By giving more oxygen
Explanation
Answer:(b)
Q.25
Which of the following is example of amoeboid movement ?
0%
a) Gamates of bryophyta
0%
b) Hydrilla
0%
c) Fungi
0%
d) Algae
Explanation
Answer:(c)
Q.26
Match the following :
Column I
Column II
(P) Opening of leaf blade
(i) Epinasty
(Q) Closing of leaves
(ii) Hyponasty
(R) Zigzag movement in apical bud
(iii) Nutation
(S) Spiral and helical growth of tendrilar plants
(iv) Circumnutation
(T) Pulsation in leaflets of indian telegraph plant
(v) Variation
0%
a) (P-i), (Q-ii), (R-iii), (S-iv), (T-v)
0%
b) (P-v), (Q-iv), (R-iii), (S-ii), (T-i)
0%
c) (P-v), (Q-i), (R-iv), (S-iii), (T-ii)
0%
d) (P-v), (Q-i), (R-iv), (S-ii), (T-iii)
Explanation
Answer:(c)
Q.27
Which is natural growth inhibitor or senescence inducing hormone ?
0%
a) GA
0%
b) ABA
0%
c) NAA
0%
d) IAA
Explanation
Answer:(b)
Q.28
What is apical dominance?
0%
a) Removal of apical bud hinders growth of lateral buds
0%
b) Development of lateral buds hinders due to presence of apical bud
0%
c) Growth of apical bud is inhibited due to nearby lateral buds
0%
d) Growth of apical bud is promoted due to removal of nearest lateral buds
Explanation
Answer:(b)
Q.29
Which of the following is simple, volatile hormone ?
0%
a) Cytokinin
0%
b) ABA
0%
c) Ethylene
0%
d) IAA
Explanation
Answer:(c)
Q.30
Zeatin is an example of
0%
a) Gibberrellin
0%
b) Auxin
0%
c) Cytokinin
0%
d) ABA
Explanation
Answer:(c)
Q.31
Which hormone is absent in dormnant seed ?
0%
a) Ethylene
0%
b) ABA
0%
c) GA
0%
d) Auxin
Explanation
Answer:(c)
Q.32
Which substances are secreted at the apex of plant and they regulates growth of another region ?
0%
a) Hormones
0%
b) Vitamins
0%
c) Enzymes
0%
d) None of the above
Explanation
Answer:(a)
Q.33
What is the maximum period of growth ?
0%
a) Slow growth rate
0%
b) Steady growth rate
0%
c) Speedy growth rate
0%
d) Senescence phase
Explanation
Answer:(c)
Q.34
With which reaction Phytochrome is associated ?
0%
a) Photo-period
0%
b) Geotropism
0%
c) Photorespiration
0%
d) Phototropism
Explanation
Answer:(a)
Q.35
What is responsible for opening and closing of tulip flower ?
0%
a) Nictinasty
0%
b) Photonastic movement
0%
c) Geotropism
0%
d) Thermonasty
Explanation
Answer:(d)
Q.36
Which of the following is found in high concentration in healthy leaf ?
0%
a) Ethylene
0%
b) Cytokinin
0%
c) Auxin
0%
d) Gibberrelin
Explanation
Answer:(c)
Q.37
Which activity in plant is observed due to ethylene ?
0%
a) Maturation of flower
0%
b) Maturation of fruit
0%
c) Matutiation of leaf
0%
d) Maturation of seeds
Explanation
Answer:(b)
Q.38
Which of the following is water stress hormone? ( BHU 1998)
0%
a) Abscisic acid
0%
b) 2,4- dichlorophenoxy acetic acid
0%
c) Benzyl amino purine
0%
d) Ethylene
Explanation
Answer:(a)
Q.39
What is the colour of Phytochrome pigment ?
0%
a) Red
0%
b) Yellowish green
0%
c) Bluish
0%
d) Pink
Explanation
Answer:(b)
Q.40
In which type of dormancy, due to hardness of seed coats or integuments, embryo could not expand during germination ?
0%
a) Chemical dormancy
0%
b) Mechanical dormancy
0%
c) Physical dormancy
0%
d) External dormancy
Explanation
Answer:(b)
Q.41
When is abscission- layer formed? (AIIMS- 1980)
0%
a) With increased concentration of auxin
0%
b) With increased concentration of gibberrelin
0%
c) With decreased concentraton of gibberelin
0%
d) With decreased concentration of auxin
Explanation
Answer:(d)
Q.42
What is the cause of `Bakane’ disease?
0%
a) Fungi
0%
b) Bacteria
0%
c) Virus
0%
d) Algae
Explanation
Answer:(a)
Q.43
Sensitivity of leaves in Mimosa, depends on which factor ?
0%
a) Water
0%
b) Touch
0%
c) Temperature
0%
d) Light
Explanation
Answer:(b)
Q.44
This hormone induces growth of root but inhibits growth of .......
0%
a) Root
0%
b) Lateral buds
0%
c) Apical bud
0%
d) Unfertilized fruit developement
Explanation
Answer:(b)
Q.45
Which of the following is criteria for measurement of growth ?
0%
a) Volume
0%
b) Number
0%
c) Weight
0%
d) All a, b, c
Explanation
Answer:(c)
Q.46
Which of the example is improper for tropic movement ?
0%
a) Volvox
0%
b) Mimosa
0%
c) Antherozoids of pteridophytes
0%
d) Antherozoids of bryophytes
Explanation
Answer:(b)
Q.47
Which of the following is correct option for seed germination ?
0%
a) Emergance of primary root forms from radicle
0%
b) Development of primary root
0%
c) No root formation
0%
d) Emergance of radicle from primary root
Explanation
Answer:(a)
Q.48
Which of the following effect of gibberrelin is observed in plant ?
0%
a) Induces formation of root system
0%
b) Long plant shortens
0%
c) Dwarf plant grows in longitudinal axis
0%
d) Yellowing of young leaves
Explanation
Answer:(c)
Q.49
Which type of dormancy, inhibits embryo growth and germination in seed ?
0%
a) Mixed dormancy
0%
b) Endogenous dormancy
0%
c) External dormancy
0%
d) Physiological dormancy
Explanation
Answer:(d)
Q.50
Which physilogical reaction is essential for development leaftendril ?
0%
a) Circumnutation
0%
b) Nastism
0%
c) Curvature
0%
d) Tropism
Explanation
Answer:(a)
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