Arrange the given stages in spermatogenesis sequentially :
(A) Spermatid
(B) Primary spermatocytes
(C) Spermatogonia
(D) Secondary spermatocytes
Choose the correct answer from the options given below:

Select the correct statements with respect to Agrobacterium tumefaciens.
(A) It is a pathogen of many monocot plants.
(B) It can deliver T-DNA and transform normal plant cells into tumor
(C) Tumor inducing plasmid of Agrobacterium tumefaciens is modified into a pathogenic cloning vector.
(D) Tumor inducing plasmid of Agrobacterium tumefaciens is used to deliver genes of interest into plants.
Choose the correct answer from the options given below :

Match List - I with List - II.

LIST I	LIST II
(A) Metabolic Disorder	(I) Family tree over generation
(B) Pedigree analysis	(II) Blood disease
(C) Thalassemia	(III) Phenylketonuria
(D) Trisomy of 21st chromosome	(IV) Down's Syndrome

Choose the correct answer from the options given below:

Which of the following is always upright in an ecosystem?

In the species-area relationship equation, log S = log C + Z log A, 'Z' denotes -

C and Z in the species-area relationship log S = log C + Z log A represents:

A classical example of mutation arise due to change in a single base pair of DNA is:

Select the components that are needed to set up a polymerase chain reaction:
(A) Two primers and dNTPs
(B) Template DNA
(C) DNA ligase
(D) DNA polymerase
Choose the correct answer from the options given below:

Applied Mathematics
Which of the following are NOT correct about "Sinking Fund"?
(A) It does not have any specific purpose.
(B) It can be used in any emergency.
(C) Any amount, any time can be deposited in it.
(D) It is set up for a particular upcoming expense.
Choose the correct answer from the options given below:

Conductors develop electric currents in them

Read the following passage carefully and answer the given questions.
Some strains of Bacillus thuringiensis produce proteins that kill certain insects such as lepidopterans (tobacco budworm, armyworm), coleopterans (beetles) and dipterans (flies, mosquitoes). B. thuringiensis forms protein crystals during a particular phase of their growth. Transgenic animals that produce useful biological products can be created by the introduction of the portion of DNA (or genes) which codes for a particular product such as human protein (a-1-antitrypsin) used to treat emphysema. In 1997, the first transgenic cow, Rosie, produced human protein-enriched milk (2.4 grams per litre). The milk contained the human alpha-lactalbumin and was nutritionally a more balanced product for human babies than natural cow-milk. A nematode Meloidegyne incognitia infects the roots of tobacco plants and causes a great reduction in yield. A novel strategy was adopted to prevent this infestation which was based on the process of RNA interference (RNAi). This method involves silencing of a specific mRNA due to a complementary dsRNA molecule that binds to and prevents translation of the mRNA (silencing). Biopiracy is the term used to refer to the use of bio-resources by multinational companies and other organisations without proper authorisation from the countries and people concerned without compensatory payment. ELISA is based on the principle of antigen-antibody interaction. Infection by pathogen can be detected by the presence of antigens (proteins, glycoproteins, etc.) or by detecting the antibodies synthesised against the pathogen.
mRNA silencing through RNA interference (RNAi) refers to the:

Which one of the following 1 molal aqueous solutions will show maximum freezing point depression?

Answer the question on basis of passage given below :
The noble gases have closed shell electronic configuration and are monatomic gases under normal conditions. The low boiling points of lighter noble gases are due to the weak dispersion forces between the atoms and the absence of other inter atomic interaction. The direct reaction of xenon with fluorine leads to a series of compounds with oxidation numbers \(+2, +4\) and \(+6\).
\(\text{XeF}_4\) reacts violently with water to give \(\text{XeO}_3\). The compound of Xenon exhibit stereoisomerism and their geometries can be deduced considering the total number of electrons in the valence shell.
Structure of \(\text{XeO}_3\) is: