Which of the following is NOT a secondary lymphoid organ?

The experiment of transforming principle was conducted on:

In a country, at any time, the population has the same number of youngs and mature ones. What type of growth does it reflect?

The first ________ was given in 1990 to a 4-year old girl with adenosine deaminase (ADA) deficiency.

Nowadays, biofertilisers are available in the market. Select the correct statements regarding biofertilisers given below:
(A) Biofertilisers increase the soil fertility.
(B) Biofertilisers kill the pathogenic microbes
(C) Biofertilisers increase the iron content in the soil
(D) Biofertilisers increase the crop production.
(E) Excess use of biofertilisers causes water and soil pollution.
Choose the correct answer from the options given below:

Arrange the following steps involved in Recombinant DNA Technology in correct sequence.
(A) Insertion of recombinant DNA into host cell/organism
(B) Cutting of source DNA as well as vector DNA at specific location and their joining
(C) Isolation of the genetic material (DNA)
(D) Obtaining the foreign gene product
(E) Culturing transformed host cells at large scale
Choose the correct answer from the options given below :

Identify the incorrect statement about the human genome -

Read the following passage carefully and answer the given questions.
Bioactive molecule, cyclosporin A, that is used as an immunosuppressive agent in organ-transplant patients, is produced by the fungus Trichoderma polysporum. Statins produced by the yeast Monascus purpureus have been commercialised as blood-cholesterol lowering agents. It acts by competitively inhibiting the enzyme responsible for synthesis of cholesterol. Baculoviruses are pathogens that attack insects and other arthropods. The majority of baculoviruses used as biological control agents are in the genus Nucleopolyhedrovirus. These viruses are excellent candidates for species-specific, narrow spectrum insecticidal applications. They have been shown to have no negative impacts on plants, mammals, birds, fish or even on non-target insects. BOD refers to the amount of the oxygen that would be consumed if all the organic matter in one liter of water were oxidised by bacteria. The sewage water is treated till the BOD is reduced. Cheese, is one of the oldest food items in which microbes were used. Different varieties of cheese are known by their characteristic texture, flavour and taste. For example, the large holes in ‘Swiss cheese’ are due to production of a large amount of CO₂ by a bacterium named Propionibacterium sharmanii.
The greater the BOD of waste water-

Choose the correct statements:
(A) The angle of incidence corresponding to an angle of refraction \(90^{\circ}\) is called critical angle (i).
(B) Refractive index of denser medium \(\mu=\frac{1}{\sin \left(i_c\right)}\).
(C) For \(i>i_c\), Snell's law of refraction cannot be satisfied.
(D) The refractive index of air increases with decrease in density.
(E) Rainbow is the combined effect of dispersion, refraction and reflection of sunlight by droplets.
Choose the correct answer from the options given below :

In which of the following transitions will the wavelength of light emitted be minimum?

Match List-I with List-II

List-I (Name of the Reaction)	List-II (Compound synthesized)
(A) Kolbe's Reaction	(I) Salicylaldehyde
(B) Reimer-Tiemann Reaction	(II) Salicylic acid
(C) Etard Reaction	(III) Chlorobenzene
(D) Sandmeyer Reaction	(IV) Benzaldehyde

Choose the correct answer from the options given below:

A long wire with a small current element of length 1 cm is placed at the origin and carries a current of 10 A along the x-axis. The magnitude of the magnetic field, due to the element, on the y-axis at a distance \( r = 0.5 \, m \) from it, would be

Which of the following processes is responsible for the formation of a Delta when river water meets the sea water?