Chemical Coordination in Plants Class 10 ICSE Biology MCQ Questions
Looking for Chemical Coordination in Plants Class 10 ICSE Biology Chapter 7 MCQ Questions? If yes, You are the right page. Here we have provided ICSE class 10 biology Chapter 7 multiple choice questions and answers. All MCQ are important.
( I ) Choose the best answer
( 1 ) Plants mostly depicts their movements in the form of
a ) Bending b ) Twisting
c ) Elongation d ) All of the above
Answer : d ) All of the above
( 2 ) The depiction of plants movements are mainly the result of transformation that occurs in
a ) External factors b ) Internal factors
c ) Both external and internal factors d ) None of the above
Answer : c ) Both external and internal factors
( 3 ) The occurrence of transformations in the external or internal surrounding of an organism are known as
a ) Stimuli b ) Responses
c ) Deterrent d ) Counterincentive
Answer : a ) Stimuli
( 4 ) The role of stimuli in causing the ultimate movements or actions is known by the term of
a ) Respones b ) Stimuli
c ) Causation d ) Non- response
Answer : a ) Respones
( 5 ) In plants , chemical control plays an essential role in ensuing their
a ) Sensitivity b ) Coordination
c ) Sensitivity and coordination d ) Movement
Answer : c ) Sensitivity and coordination
( 6 )The production of chemical compounds that helps the plants to provoke their response towards the stimuli is known as
a ) Alkaloids b )Terpenoids
c )Polyketides d ) Hormones
Answer : d ) Hormones
( 7 ) Plants portrays an extreme level of sensitivity towards
a ) Light b ) Darkness
c ) Shadows d ) Dimness
Answer : a ) Light
( 8 ) On which year , the term “ Hormone” was first used ?
a ) 1889 b ) 1902
c ) 1905 d ) 1992
Answer : b ) 1902
( 9 )Which physiologist first contributed in coining the term “ Hormone” ?
a ) Edgar Allen b ) John Auer
c ) William Bayliss and Ernest Starling d ) Walter Boron and George Billman
Answer : c ) William Bayliss and Ernest Starling
( 10 ) On which year , the term “ Auxin” was first introduced?
a ) 1914 b ) 1928
c ) 1932 d ) 1940
Answer : b ) 1928
( 11 ) Who first contributed in coining the term “ Auxin” ?
a ) F.W .Went b ) Jacobus Boomsma
c )S. Simon Sanches d ) Charles Darwin
Answer : a ) F.W .Went
( 12 ) The Greek term ‘ Auxein ‘ literally implies
a ) To shrink b ) To recede
c ) To cease d ) To grow
Answer : d ) To grow
( 13 ) Which one of the following growth hormone was first discovered in plants ?
a ) Auxins b ) Cytokinins
c ) Gibberellins d ) Ethylene
Answer : a ) Auxins
( 14 ) What is the full form of IAA ?
a ) Indole 2 – acidic acid b ) Indole 3 – acetic acid
c ) Idole 4 –amino acid d ) Indole -3 ascorbic acid
Answer : b ) Indole 3 – acetic acid
( 15 ) Which one of the following plant hormone acts as a gas at normal temperature?
a ) Auxins b ) Cytokinins
c ) Ethylene d ) Gibberellins
Answer : c ) Ethylene
( 16 ) There are how many types of plant hormones ?
a ) 3 b ) 6
c ) 8 d ) 5
Answer : d ) 5
( 17 ) The reduction in stem elongation and acceleration of senescence are the two major processes that are involved in plants and these two processes are primarily the result of
a ) Ethylene b ) Auxins
c ) Gibberellins d ) Cytokinins
Answer: a ) Ethylene
( 18 ) ABA mainly stands for
a ) Abscitric acid b ) Abscisic acid
c ) Abscetro acid d ) Abscelic acid
Answer : b ) Abscisic acid
( 19 )Abscisic acid is also known by the term of
a ) Growth hormone b ) Sex hormone
c ) Stress hormone d ) Follicle stimulating hormone
Answer : c ) Stress hormone
( 20 ) When all or segment of an organism turns in a specific direction in relation to the response to an exterior stimulus is called
a ) Nastism b ) Geotropism
c ) Phototropism d ) Tropism
Answer : d ) Tropism
( 21 ) The word “ tropic” is derived from a Greek word“tropos “ which mainly indicates to
a ) Turn b ) Move
c ) Pause d ) Alter
Answer : a ) Turn
( 22 ) The term ‘ Phototropism’ literally denotes
a ) Movement towards dark b ) Movement towards light
c ) Movement towards dusk d ) Movement towards dim
Answer : b ) Movement towards light
( 23 ) Auxins performs an essential function in
a ) Geotropism b ) Hydrotropism
c ) Phototropism d ) Thigmotropism
Answer : c ) Phototropism
( 24 ) The movement in the direction of the earth’s gravitational force is called
a ) Hydrotropism b ) Thigmotropism
c ) Phototropism d ) Geotropism
Answer : d ) Geotropism
( 25 ) Which one of the following device is used in the laboratory for the purpose of demonstrating geotropism ?
a ) Clinostat b ) Safety apparatus
c ) Incubator d ) Breakers
Answer : a ) Clinostat
( 26 ) Hydrotropism mainly refers to
a ) The tendency of plant segments to move towards the direction of water or moisture
b ) The tendency of plant segments to move towards the direction of aridity
c ) The tendency of plant segments to move towards the direction of dryness
- d) None of the above
Answer : a ) The tendency of plant segments to move towards the direction of water or moisture
( 27 ) The growing of plant segments in the direction of the origin of moisture is primarily articulated as
a ) Negativity hydrotropic b ) Positively hydrotropic
c ) Both negativity and positively hydrotropic d ) None of the above
Answer : b ) Positively hydrotropic
( 28 ) The departure of plant segments from the origin of moisture is rightly termed as
a ) Positively hydrotropic b ) Separation
c )Evacuation d ) Negativity hydrotropic
Answer : d ) Negativity hydrotropic
( 29 )The expansion of plant components towards the direction of touch stimulus is known as
a ) Phototropism b ) Hydrotropism
c ) Thigmotropism d ) Geotropism
Answer : c ) Thigmotropism
( 30 ) Which of the following plant(s) possess tendrils ?
a ) Sweet peas , cuscuta and vines b ) Lathyrus
c ) Money plant d ) Pisum
Answer : a ) Sweet peas , cuscuta and vines
( 31 ) The tendrils constitutes one of the most eminent example of
a ) Hydrotropism b ) Thigmotropism
c ) Geotropism d ) Phototropism
Answer : b ) Thigmotropism
( 32 ) In comparison to gravity , water is considered as one of the most efficient stimulus for the
a ) Roots b ) Shoots
c ) Stem d ) Leaf
Answer : a ) Roots
( 33 ) The situation in which plant segments grows in retaliation towards the direction of chemicals is popularly known as
a ) Geotropism b )Hydrotropism
c ) Thigmotropism d ) Chemotropism
Answer : d ) Chemotropism
( 34 ) Which one of the following plants possesses the ability to manifest heliotropism ?
a ) Vines b ) Peas
c ) Sunflowers d ) Lucky bamboo
Answer : c ) Sunflowers
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