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Recent questions tagged transport-in-plants

If plant cell is immersed in water the water continues to enter the cell untill the

asked Apr 3, 2014 by sreemathi.v

1 answer

When beet root cylinders are washed and then placed in cold water,anthocyanine does not come out.This indicates that most likely the plasma membrane is

asked Apr 3, 2014 by sreemathi.v

1 answer

An example of selectively permeable membrane

asked Apr 3, 2014 by sreemathi.v

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When a cell is fully turgid which of the following will be zero

asked Apr 3, 2014 by sreemathi.v

1 answer

In hypertonic solution cell's water potential

asked Apr 3, 2014 by sreemathi.v

1 answer

Plasma membrane controls

asked Apr 3, 2014 by sreemathi.v

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Initial absorption of water by root hairs is through

asked Apr 3, 2014 by sreemathi.v

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Root hairs absorbs water from soil when

asked Apr 3, 2014 by sreemathi.v

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DPD is equal to

asked Apr 3, 2014 by sreemathi.v

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A cell is plasmolysed after being kept in hypertonic solution.What will be present between cell wall and plasmalemma?

asked Apr 3, 2014 by sreemathi.v

1 answer

Dry seeds when placed in water swell up due to

asked Apr 3, 2014 by sreemathi.v

1 answer

Osmosis involves

asked Apr 3, 2014 by sreemathi.v

1 answer

Fresh grapes shall shrink when they are placed in

asked Apr 3, 2014 by sreemathi.v

1 answer

Which helps in maintaining form and structure of cell?

asked Apr 3, 2014 by sreemathi.v

1 answer

Cell turgidity is caused by

asked Apr 3, 2014 by sreemathi.v

1 answer

Net movement of water is from

asked Apr 3, 2014 by sreemathi.v

1 answer

The external solution having less concentration than the cell sap is called

asked Apr 3, 2014 by sreemathi.v

1 answer

The external solution having same concentration as that of cell sap is called

asked Apr 3, 2014 by sreemathi.v

1 answer

The external solution having more concentration than the cell sap is called

asked Apr 2, 2014 by sreemathi.v

1 answer

The membrane that allows some solute molecules to pass through it and prevent others is called

asked Apr 2, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:The roots of transpiring plants is directly proportional to relative humidity}\\\text{Reason:Humid air increases the rate of diffusion so that the rate of transpiration increases}\end{array}$

asked Apr 2, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Most of the water absorbed by the plants is lost by transpiration}\\\text{Reason:Water is not needed for vital activities of plants}\end{array}$

asked Apr 2, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses -

asked Apr 2, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses -

asked Apr 2, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Wax,resin and suberin coating on the surface of plant parts reduce the rate of transpiration}\\\text{Reason:These adaptations are found mostly in xerophytes}\end{array}$

asked Apr 2, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Light is very important external factor of transpiration}\\\text{Reason:Light induces stomatal opening and darkness stomatal closure.Thus the rate of transpiration increases in light and decreases in dark}\end{array}$

asked Apr 2, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:If a bottle filled with volatile substance is opened at a corner of the room the odour of substance can be smelled from another corner}\\\text{Reason:The volatile substances diffuse from the region of higher concentration to the region of lower concentration}\end{array}$

asked Apr 2, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:The water molecules are held together from substomatal cavities in leaves to the roots because of cohesive force}\\\text{Reason:Water does not ascend in stem due to transpiration pull}\end{array}$

asked Apr 2, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses

asked Apr 2, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses -

asked Apr 2, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Plasmolysis occurs when the plant cells are highly placed in concentrated sugar or salt solution}\\\text{Reason:Highly concentrated sugar or salt solution acts as hypotonic solution which leads to exosmosis}\end{array}$

asked Apr 2, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:The cells of the root have lower water potential than leaf cells }\\\text{Reason:Root cells have greater solute concentration}\end{array}$

asked Apr 2, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses$\begin{array}{1 1}\text{Assertion:Root pressure is the reason for ascent of sap in herbaceous plants}\\\text{Reason:Root pressure is due to diffusion pressure gradient and is maintained by the activity of living cells}\end{array}$

asked Apr 2, 2014 by sreemathi.v

1 answer

Match the items of column I with the appropriate items in column II:

asked Apr 2, 2014 by sreemathi.v

1 answer

Match the items of column I with the appropriate items in column II:

asked Apr 2, 2014 by sreemathi.v

1 answer

Match the items of column I with the appropriate items in column II:

asked Apr 2, 2014 by sreemathi.v

1 answer

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