From the twig experiment in which twig is placed in colored water, which of the following can be deduced?

(1) The path of organic Acid

(2) The path of hormones

(3) The path of water

(4) The development of twig

Subtopic:  Water Absorption |
 80%
From NCERT
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Movement of molecule across a typical plant cell i.e. 50 micrometer takes

(1) 10 seconds

(2) 15 seconds

(3) 2.5 seconds

(4) 16 seconds

Subtopic:  Water Absorption |
 80%
From NCERT
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If mass flow is occurring like suction through a straw

(1) It is due to positive hydrostatic pressure

(2) It is due to negative hydrostatic pressure

(3) It is due to concentration gradient

(4) All of these

Subtopic:  Water Potential Concept |
 81%
From NCERT
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Xylem transports from roots to the aerial parts of the plants

(1) Water, mineral salts

(2) Some organic Nitrogen

(3) Inorganic solutes, Hormones

(4) All of these

Subtopic:  Ascent of Sap |
 90%
From NCERT
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The movement of water through apoplast stops at the level of ……..And crosses membrane to undergo symplast till xylem cells

(1) Endodermis of root

(2) Starch sheath

(3) Inner layer of cortex

(4) All of these

Subtopic:  Water Absorption |
 60%
From NCERT
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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.

Subtopic:  Water Absorption |
 78%
From NCERT
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Root 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

Subtopic:  Transpiration & Guttation |
 75%
From NCERT
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Transpiration can be studied by

(1) Cobalt chloride paper test

(2) Chromium chloride paper test

(3) Leaf enclosed in polybag

(4) Both A and C

Subtopic:  Transpiration & Guttation |
 77%
From NCERT
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The inner wall of guard cell is not

(1) Thin

(2) Elastic

(3) Towards the pore or stomatal aperture

(4) All of these

Subtopic:  Stomata: 1 | Stomata |
 69%
From NCERT
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Transpiration is affected by external factors

Find the wrong one.

(1) Temperature, Light

(2) Humidity

(3) Wind Speed

(4) Canopy structure

Subtopic:  Transpiration & Guttation |
 78%
From NCERT
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