Home
Class 11
BIOLOGY
A column of water within xylem vessels o...

A column of water within xylem vessels of tall trees does not break under its weight because of:

A

Tensile strength of water

B

Lignification of xylem vessels

C

Positive root pressure

D

Dissolved sugars in water

Text Solution

Verified by Experts

Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • PLANT KINGDOM

    SARAS PUBLICATION|Exercise EXAMPLE|161 Videos

  • REPRODUCTIVE MORPHOLOGY

    SARAS PUBLICATION|Exercise EXAMPLE|288 Videos

Similar Questions

Explore conceptually related problems

The water within the xylem along with dissovled minerals from roots is called

The transpiration pull sucks the water column from the xylem tubes, so that the water is able to rise up in the tallest plants.

Knowledge Check

  • Water does not freeze at the bottom of the lakes in winter because ......... .

    A
    ice is a good conductor of heat
    B
    ice reflects heat and light
    C
    of anomalous expansion of water between `4^@C` to `0^@C`
    D
    nothing can be said

    • Similar Questions

    Explore conceptually related problems

    A material breaks up under a stress of 20xx10^(5)N//m^(2) . If the density of the material is 2.5xx10^(3)kg//m^(3) , calculate the length may break under its own weight.(Take g=10m//s^(2) )

    A material breaks up under a stress of 20xx10^(5)N//m^(2) . If the density of the material is 2.5xx10^(3)kg//m^(3) , calculate the length may break under its own weight.(Take g=10m//s^(2) )

    The rupture and fractionation do not usually occur in the water column in vessel//tracheids during the ascent of sap because of:

    If a thin lens is dipped in water, does its focal length change ?

    A cylindrical vessel of diameter 12 cm contains 800n cm 3 of water. A cylindrical glass piece of diameter 8.0 cm and height 8.0 cm is placed in the vessel. If the bottom of the vessel under the glass piece is seen by the paraxial rays (see figure 18-E6), locate its image. The index of refraction of glass is 1.50 and that of water is 1.33.

    A spring compressed by 10 cm develops a restoring force of 10 N.A body of mass 9 kg is placed on it . What is the force constant of the spring ? What is the depression in the spring under the weight of the body? What is the period of oscillation if the body is disturbed from its equilibrium position?

    Read the paragraph and answer the following question: You must be knowing about the high and low tides that occur regularly in the sea. The level of the sea water at any given location along sea shore increases and decreases twice a day at regular intervals. High and low tides occur at different times at places. The level of water in sea changes because of the gravitational force exerted by the moon. Water directly under the moon gets pulled towards the moon and the level of water there goes up causing high tide at that place. At two places on the earth at 90^(@) from the place of high tide, the level of water is minimum and low tides occur there. Where is high tide and low tide caused?

    Home
    Profile