Force developed in cortex of root which pushes water intoxylem of root soil is

Na⁺, K⁺ dependent ATPase activity helps in transport of(a)(b)(c)(d)

Solution

ATPase may itself catalyze a direct transport of K⁺, or Na?⁺ /K⁺ exchanges pump.

The transpiration in plants will belowest

Solution

If the atmosphere is very humid and relatively saturated it capacity to absorb water is low and the rate of transpiration is slowed down

In which of the following plants, there will be no transpiration ?

Which of the following is produced during water stress and causes closure of stomata?

Solution

In the case of hydroactive control abscisic acid(ABA)plays an important role in the closure of stomata,whenever there is shortage of water ABA is synthesized resulting in the closure of stomata.

What will be the effect of accumulation of K+ions in guard cells?

Solution

The opening and closing of stomata depends on the concentration of solutes in the guard cells (the main component of the solute concentration in guard cells is K⁺). When the concentration of solutes, K+ion guard cells increases, their osmotic pressure increases. In other words, their water potential decreases. As a result of this,they absorb water from their surrounding epidermal cells,their turgidity increases.

Casparian strip is made up of

Wilting occurs when

Solution

At noon the rate of transpiration is maximum. The rate of water absorption is less due to shrinkage of roots and depletion of water around the root hairs.

Which of the following events does not occur during the closing of stomata?

Force developed in cortex of root which pushes water intoxylem of root from soil

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