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Root pressure develops due to:

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Important Questions on Transport in Plants

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Biology>Plant Physiology>Transport in Plants>Ascent of Sap

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>Ascent of Sap

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?

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Biology>Plant Physiology>Transport in Plants>Ascent of Sap

Chromatophores take part in:

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Biology>Plant Physiology>Transport in Plants>Ascent of Sap

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:

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Biology>Plant Physiology>Transport in Plants>Ascent of Sap

Plants absorb water through its roots, stems and leaves. But, mainly water is absorbed by root hairs. These hair roots absorb water, when:

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Biology>Plant Physiology>Transport in Plants>Ascent of Sap

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

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Biology>Plant Physiology>Transport in Plants>Ascent of Sap

Identify the correct order of organization of genetic material from largest to smallest :

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Biology>Plant Physiology>Transport in Plants>Ascent of Sap

In sea urchin DNA, which is double-stranded,

17 %

of the bases were shown to be cytosine. What are the percentages of other three bases expected to be present in this DNA?

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Biology>Plant Physiology>Transport in Plants>Ascent of Sap

Absorption of water is associated with

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Biology>Plant Physiology>Transport in Plants>Ascent of Sap

Fertilization in humans is practically feasible only if:

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Biology>Plant Physiology>Transport in Plants>Ascent of Sap

The molecular weight of E coil. DNA is

3.1 \times 10^{9} g / m o l

. 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:

HARD

Biology>Plant Physiology>Transport in Plants>Ascent of Sap

How does the transportation of water take place over the heights in a plant? Explain.

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Biology>Plant Physiology>Transport in Plants>Ascent of Sap

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?
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