Which one of the following statements does not improve the reproductive health of society?

Lichens are an example of -

Which one of the followings has the ability to transform normal cells into cancerous cells in animals?

In which ecosystem, a large fraction of energy flows more through DFC than through GFC?

The unequivocal proof that DNA is the genetic material came from the experiments of -

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.
Which of the following technique is not very useful to detect the cancers of internal organs?

Match List I with List - II. -

List – l	List – II
(A) Aspergillus niger	(l) Blood cholesterol lowering agent
(B) Trichoderma polysporum	(II) Citric Acid
(C) Saccharomyces cerevisiae	(III) Immunosuppressive agent
(D) Monascus purpureus	(IV) Ethanol

Choose the correct answer from the options given below:

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

A square shaped coil of 10 cm side, having 100 turns, is placed perpendicular to a magnetic field which is increasing at the rate of 1.0 T/s. The induced emf in the coil would be

A \( 100 \mu F \) capacitor is charged with a 50 V source supply. Then the source supply is removed, and the capacitor is connected across a pure inductor coil. As a result of which 5 A current flows through the inductor. The value of the self-inductance of the coil is:

Which of the following mico-organism is used to produce statins, a blood-cholesterol lowering agent ?

A galvanometer has a resistance of \(8 \Omega\). It is shunted by a wire of resistance \(2 \Omega\). If the total current is 2 A, the current passing through the shunt is

If \(\alpha, \beta\) and \(\gamma\) are angle of inclinations of a line with \(x, y\) and \(z\) ares respectively, then the value of \(2(\cos 2 \alpha+\cos 2 \beta+\cos 2 \gamma)\) is