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Q. No.The immediate cause of opening and closing of stomata is a change in the
(1) Turgidity of subsidiary cells
(2) Flexibility of aperture
(3) Change in the turgidity of guard cells
(4) All of these
(1) Turgidity of subsidiary cells
(2) Flexibility of aperture
(3) Change in the turgidity of guard cells
(4) All of these
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe inner wall of guard cell is not
(1) Thin
(2) Elastic
(3) Towards the pore or stomatal aperture
(4) All of these
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe opening of stoma is also…….due to the orientation of the microfibril in the …….
of guard cells.
(1) Supported, cytoplasm
(2) Supported, cell wall
(3) Affected, cell membrane
(4) Affected, cytoplasm
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMicrofibril of Guard cells of stoma are not
(1) Made up of Cellulose
(2) Oriented radially
(3) Makes it more easy for stoma to open
(4) Found in cytoplasm
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhen stomata is open
(1) Outer wall of guard cell is crescent shaped
(2) Outer wall is bulged out while inner wall is crescent shaped
(3) Outer wall is crescent shaped while inner wall is flat
(4) Outer wall is flat while inner wall is crescent shaped
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhen guard cells lose turgor due to…….the elastic …….regain its shape and guard cells become…..
(1) Water stress, outer wall and Turgid
(2) Toxic, Inner wall and Flaccid
(3) Toxic, Outer wall and Turgid
(4) Water stress, Inner wall and Flaccid
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTranspiration is affected by external factors
Find the wrong one.
(1) Temperature, Light
(2) Humidity
(3) Wind Speed
(4) Canopy structure
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTranspiration is affected by internal factors
Find the wrong one
(1) Number of stomata
(2) Water status of plant
(3) Per cent of open stomata
(4) Wind speed
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyNumber and distribution of stomata, Per cent of open stomata, water status of the plant, Canopy Structure, Temperature, light, Humidity, wind speed
How many factors are externally and internally affecting transpiration?
(1) 5,3
(2) 4,4
(3) 3,5
(4) 2,6
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTranspiration driven ascent of xylem depends on which of the following properties of water?
(1) Cohesion
(2) Adhesion
(3) Surface tension
(4) All of these
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect Question Set:
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