Arrange the given taxa of invertebrates in terms of their increasing numbers.
(A) Other animal groups
(B) Molluscs
(C) Insects
(D) Crustaceans
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Match List I with List II.

LIST I	LIST II
A. Artificial insemination	I. Infertility
B. Chromosomal disorder	II. Assisted Reproductive Technologies
C. Gonorrhoea	III. Amniocentesis
D. Inability to produce children	IV. Sexually transmitted infections

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Arrange the following steps of DNA fingerprinting in a correct sequence.
(A) Hybridisation using labelled VNTR probe and autoradiography
(B) Digestion of DNA by restriction endonuclease and separation of fragments by electrophoresis.
(C) Blotting of separated DNA fragments to synthetic membrane.
(D) Isolation of DNA
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The karyotype in klinefelter's syndrome is:

Trichoderma species is:
(A) Free living fungi
(B) Very common in the root ecosystem
(C) Effective biocontrol agent
(D) Resistance to insects
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Which of the following is a free living, effective biocontrol agent, found very often in the root ecosystem?

Which one of the following codons performs a dual function?

Match List-I with List-II
Consider two vectors \(\vec{a}=\hat{i}+2 \hat{j}-\hat{k}\) and \(\vec{b}=-3 \hat{i}-6 \hat{j}+3 \hat{k}\).

List-I	List-II
(A) Angle between \(\vec{a}\) and \(\vec{b}\)	(I) \(\cos ^{-1}\left(\frac{1}{\sqrt{6}}\right)\)
(B) Angle between \(\vec{a}\) and \(x\)-axis	(II) \(\cos ^{-1}\left(\frac{2}{\sqrt{6}}\right)\)
(C) Angle between \(\vec{b}\) and \(x\)-axis	(III) \(\pi\)
(D) Angle between \(\vec{a}\) and \(y\)-axis	(IV) \(\cos ^{-1}\left(-\frac{1}{\sqrt{6}}\right)\)

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Indium is mainly refined by :

Match List-I with List-II

List-I ( Common name)	List-II ( IUPAC name)
(A) Vinyl Chloride	(I) 1-Chloro-2-methylbenzene
(B) Chloroform	(II) Dichloromethane
(C) Methylene chloride	(III) Trichloromethane
(D) o-Chlorotoluene	(IV) Chloroethene

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\( \alpha, \beta \) and \( \gamma \) rays emitted by a radioactive substance are allowed to pass through a region containing a magnetic field at right angles to their path. The energy gained will be

Observe the figure and answer the following:


How many mitotic divisions occur in the nucleus of the functional megaspore to form embryo sac?

Read the passage carefully and answer the questions
The osmotic pressure is one of the four colligative properties which depends on the number of particles of solute in the solution, irrespective of their nature. The osmotic pressure is equal to the product of concentration, gas constant and temperature. It is the most commonly used property for the determination of the molar mass of biomolecules. In many situations, the molecules get dissociated or associated when they are dissolved in a solvent, thereby changing the number of molecules in the solution. As a result, an abnormal molecular mass is obtained. The extent of dissociation or association is given by van't Hoff factor (i), which is the ratio of normal molar mass to abnormal molar mass. It is related with the degree of association or ionization. The introduction of van't Hoff factor in the osmotic pressure equation modifies the equation.
Which one of the following has minimum osmotic pressure at 298 K ?