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Plasmolysis:

A. Is withdrawal of protoplast of a plant cell from its cell wall.

B. Occurs when a cell is placed in a solution that has more solutes than cell cytoplasm.

C. Occurs when water moves out of the cell.

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Important Questions on Transport in Plants

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Biology>Plant Physiology>Transport in Plants>Plant Water Relations

Mitochondria and chloroplast are:

(i) Semi - autonomous organelles

(ii) Formed by the division of pre-existing organelles and they contain DNA but lack protein synthesizing machinery

Which one of the following option is correct?

HARD
Biology>Plant Physiology>Transport in Plants>Plant Water Relations
Explain the osmosis and draw a labelled diagram of demonstration of osmosis by a thistle funnel.
MEDIUM
Biology>Plant Physiology>Transport in Plants>Plant Water Relations
Microtubules are the constituents of:
EASY
Biology>Plant Physiology>Transport in Plants>Plant Water Relations
If you suspect major deficiency of antibodies in a person, to which of the following would you like for confirmation evidence?
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Biology>Plant Physiology>Transport in Plants>Plant Water Relations

Assertion (A): The flow of solvent molecules from a pure solvent to the solution through semipermeable membrane is osmosis.

Reason (R): Pure solvent molecules flow out of the solution through semipermeable membrane if a pressure larger than the osmotic pressure is applied to the solution side.

The correct answer is:

MEDIUM
Biology>Plant Physiology>Transport in Plants>Plant Water Relations
Identify the correct order of organization of genetic material from largest to smallest :
MEDIUM
Biology>Plant Physiology>Transport in Plants>Plant Water Relations
Fertilization in humans is practically feasible only if:
EASY
Biology>Plant Physiology>Transport in Plants>Plant Water Relations
Proteins P, Q, and R are associated with an intact organellar membrane in a cell. If the intact organelle is treated with a high ionic strength buffer, only protein R remained associated with the membrane fraction. Based on this, one could conclude that:
EASY
Biology>Plant Physiology>Transport in Plants>Plant Water Relations
Which of the following physico-chemical techniques is commonly used to desalinate brackish water?
HARD
Biology>Plant Physiology>Transport in Plants>Plant Water Relations
Explain the process with a diagram when a living cell is placed in a concentrated solution.
EASY
Biology>Plant Physiology>Transport in Plants>Plant Water Relations
Chromatophores take part in:
MEDIUM
Biology>Plant Physiology>Transport in Plants>Plant Water Relations
Two semi - permeable bags containing 2% sucrose are placed in two beakers, 'P' containing water and 'Q' containing 10% sucrose. Which one of the following outcomes is true?
EASY
Biology>Plant Physiology>Transport in Plants>Plant Water Relations
Which one of the following is not applicable to RNA?
EASY
Biology>Plant Physiology>Transport in Plants>Plant Water Relations
Root pressure is usually acidic because:
MEDIUM
Biology>Plant Physiology>Transport in Plants>Plant Water Relations
Match the columns and identify the correct option.
 
  Column I   Column II
A Thylakoids (i) Disc-shaped sacs in Golgi apparatus
B Cristae (ii) Condensed structure of DNA
C Cisternae (iii) Flat membranous sacs in stroma
D Chromatin (iv) Infoldings in mitochondria
EASY
Biology>Plant Physiology>Transport in Plants>Plant Water Relations
The schematic below describes the states of the lac operon in the absence of lactose. Which ONE of the following happens when lactose is present in the cell?
Question Image
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Biology>Plant Physiology>Transport in Plants>Plant Water Relations
The molecular weight of E coil. DNA is 3.1×109 g/mol. The average molecular weight of the nucleotide pair is 660 g/mol and each nucleotide pair contributes to 0.34 nm to the length of DNA. The length of E coli DNA molecule will be approximately:
MEDIUM
Biology>Plant Physiology>Transport in Plants>Plant Water Relations
Write the relation between Diffusion Pressure Deficit (DPD), Osmotic Pressure(OP), and Turgor Pressure(TP).
EASY
Biology>Plant Physiology>Transport in Plants>Plant Water Relations
The salting of pickles is an example for
EASY
Biology>Plant Physiology>Transport in Plants>Plant Water Relations
Excess salt inhibits bacterial growth in pickles by