Chemical Coordination in Plants Class 10 ICSE Biology MCQ Questions

Chemical Coordination in Plants Class 10 ICSE Biology MCQ Questions

chemical coordination in plants class 10 mcqLooking 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

  1. 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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Updated: September 14, 2022 — 1:39 pm

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