Assertion: When the ambient temperature is high and soil contains excess of water,the plants tend to lose water in the form of droplets from lenticels.
Reason: Root pressure regulates the rate of loss of water from lenticels.
Reason: Root pressure regulates the rate of loss of water from lenticels.
- AIf both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
- BIf both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
- CIf the Assertion is correct but Reason is incorrect.
- DIf both the Assertion and Reason are incorrect.
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Similar Questions
In a girdled plant,when water is supplied to the leaves above the girdle,leaves may remain green for some time,then wilt and ultimately die. What does it indicate?
Medium
View SolutionChoose the incorrect sentences:
$(1)$ The apoplastic movement of water occurs exclusively through the intercellular spaces and the walls of the cells.
$(2)$ The symplastic system is the system of interconnected protoplasts.
$(3)$ Casparian strips are present in the apoplast pathway.
$(4)$ Transport of water is slow in the symplast compared to the apoplast.
$(1)$ The apoplastic movement of water occurs exclusively through the intercellular spaces and the walls of the cells.
$(2)$ The symplastic system is the system of interconnected protoplasts.
$(3)$ Casparian strips are present in the apoplast pathway.
$(4)$ Transport of water is slow in the symplast compared to the apoplast.
Medium
View Solution$A.$ Most researchers agree that water is mainly 'pulled' upward through the plant, where transpiration is the driving force.
$B.$ Less than one percent of water reaching the leaves is used in plant growth and photosynthesis.
$C.$ Cobalt chloride paper turns blue on absorbing water.
$B.$ Less than one percent of water reaching the leaves is used in plant growth and photosynthesis.
$C.$ Cobalt chloride paper turns blue on absorbing water.
Medium
View SolutionWhich of the following factors affect the absorption of water by roots?
Medium
View Solution$A$: Endodermis onwards,the movement of water occurs through the living part of the cell. $R$: The inner boundary of the cortex possesses an impermeable band of lignified matrix.
Medium
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