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Q. No.Pinus has an/a…….. association with mycorrhizae and their …….. without the presence of mycorrhizae.
(1) Obligate, seeds cannot germinate
(2) Facultative, fruits cannot disperse
(3) Obligate, roots can not spread down the soil
(4) Facultative, leaves cannot perform photosynthesis.
(1) Obligate, seeds cannot germinate
(2) Facultative, fruits cannot disperse
(3) Obligate, roots can not spread down the soil
(4) Facultative, leaves cannot perform photosynthesis.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyRoot pressure
(1) Pushing pressure
(2) Negative pressure
(3) Tries to cope up with water requirement of well heighted plants
(4) Effects are observed at day time and evening time
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWater loss in liquid phase from the tip of the grass blades and leaves of herbaceous parts is called
(1) Evaporation
(2) Transpiration
(3) Guttation
(4) Solarization
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFollowing are some statements which ones are not incorrect?
a. Root pressure only provide a modest push in the overall process of water transport
b. Root Pressure obviously does not play a major role in water movement up tall trees
c. The greatest contribution of root pressure may be to re-establish the continuous chains of water molecules in the xylem which often break under the enormous tensions created by transpiration
d. Most of the plants meet their need by transpiratory pull
e. The exudate of guttation has pure water only
1. a,b,d,e
2. a,b,c,d
3. b,c,d,e
4. c,d,e
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is an expected rate of upward flow in plants due to transpiratory pull?
(1) Up to 15 metres per hour
(2) Up to 15 meters per minute
(3) Up to 150 metres per hour
(4) Up to 200 metres per hour
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is a model for Transpiration?
(1) Cohesion-AdhesionTranspiration Pull Model
(2) Cohesion Tension Transpiration Pull Model
(3) Tension Transpiration Pull Model
(4) All of these
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTranspiration can be studied by
(1) Cobalt chloride paper test
(2) Chromium chloride paper test
(3) Leaf enclosed in polybag
(4) Both A and C
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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
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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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