Arrange in increasing order of number of species to represent global biodiversity?
(A) Molluscs
(B) Crustaceans
(C) Insects
(D) Other animal groups
Choose the correct answer from the options given below:

Identify, which is not the example of homology in evolution.

The term "biodiversity" was popularised by:

The females of which of the following mammals exhibit an oestrus cycle?

GEAC is:

Read the following paragraph carefully and answer the given questions.
Certain types of leukocytes (WBC) of our body like polymorpho-nuclear leukocytes (PMNL-neutrophils) and monocytes and natural killer (type of lymphocytes) in the blood as well as macrophages in tissues can phagocytose and destroy microbes. For determining the cause of allergy, the patient is exposed to or injected with very small doses of possible allergens, and the reactions studied. The use of drugs like anti-histamine, adrenalin and steroids quickly reduce the symptoms of allergy. Heroin, commonly called smack is chemically diacetylmorphine which is a white, odourless, bitter crystalline compound. This is obtained by acetylation of morphine. Techniques like radiography (use of X-rays), CT (computed tomography) and MRI (magnetic resonance imaging) are very useful to detect cancers of the internal organs. Different species of Plasmodium (P. vivax, P. malaria and P. falciparum) are responsible for different types of malaria. Of these, malignant malaria caused by Plasmodium falciparum is the most serious one and can even be fatal.
Malignant malaria is caused by -

Match List-I with List-II

List-I (Contraceptive methods)	List-II (Examples)
(A) Barrier method	(I) LNG-20
(B) Oral method	(II) Multiload 375
(C) Copper releasing IUDs	(III) Vaults
(D) Hormone releasing IUDs	(IV) Saheli

Choose the correct answer from the options given below:

An alternating voltage \( V = 140 \sin 100\pi t \) is connected across a pure resistor of resistance \( 40 \, \Omega \). What is the rms current through the resistor? (Take \( \sqrt{2} = 1.4 \))

Germanium is a semiconductor because:

Phenol reacts with sodium hydroxide and carbon dioxide in acidic medium to produce:

Match List - I with List - II.

List - I (Molecule)	List - II (Application)
(A) Statin	(I) Immunosuppressive agent
(B) Streptokinase	(II) Detergent formulations
(C) Cyclosporin A	(III) Blood-cholesterol lowering agent
(D) Lipase	(IV) Clot buster

Choose the correct answer from the options given below:

Read the given paragraph carefully and answer the following questions:
Since the DNA is enclosed within the membranes, we have to break the cell open to release DNA along with other macromolecules such as RNA, proteins, polysaccharides and also lipids. This can be achieved by treating the bacterial cells/plant or animal tissue with enzymes such as lysozyme (bacteria), cellulase (plant cells), chitinase (fungus). There are some basic steps in genetically modifying an organism (i) identification of DNA with desirable genes; (ii) introduction of the identified DNA into the host; (iii) maintenance of introduced DNA in the host and transfer of the DNA to its progeny. Agrobacterium tumifaciens, a pathogen of several dicot plants is able to deliver a piece of DNA known as 'T-DNA' to transform normal plant cells into a tumor and direct these tumor cells to produce the chemicals required by the pathogen. Other molecules can be removed by appropriate treatments and purified DNA ultimately precipitates out after the addition of chilled ethanol. Selection of recombinants due to inactivation of antibiotics is a cumbersome procedure because it requires simultaneous plating on two plates having different antibiotics. Therefore, alternative selectable markers have been developed which differentiate recombinants from non-recombinants on the basis of their ability to produce colour in the presence of a chromogenic substrate. In this, a recombinant DNA is inserted within the coding sequence of an enzyme, ß'-galactosidase. This results into inactivation of the gene for synthesis of this enzyme, which is referred to as insertional inactivation.
Agrobacterium tumefaciens, a pathogen of several dicot plants, is able to deliver a piece of DNA known as:

Monochlorination of toluene in sunlight followed by hydrolysis with aqueous \(NaOH\) yields :