Which of the following can not be used as specimen for DNA finger printing?

In water hyacinth, pollination is carried out by -
(A) Wind
(B) Water
(C) Insects
(D) Animals
Choose the correct answer from the options given below:

Industrial melanism in peppered moths is an example of:

Which of the following statement about cry genes is NOT correct?

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

Bioactive molecule, cyclosporin A, that is used as an immunosuppressive agent in organ-transplant patients, is produced by the fungus -

Identify the terminal methods to prevent pregnancy.
(A) Tubectomy
(B) Vasectomy
(C) IUDs
(D) Cervical caps
Choose the correct answer from the options given below:

Identify the correct statements among the following:
(A) The gravitational force is much stronger than the Coulomb force.
(B) The nuclear force between two nucleons falls rapidly to zero as their distance is more than a few femtometers.
(C) The nuclear force depends on the electric charge.
(D) The nuclear force is much stronger than the coulomb force.
Choose the correct answer from the options given below:

Converting \(\text{[A]}\) into \(\text{[C]}\) is called :

Read the following paragraph and answer the given questions:
DRUGS AND ALCOHOL ABUSE
The drugs, commonly abused are opioids, cannabinoids, and coca alkaloids. Opioids are the drugs, which bind to specific opioid receptors present in our central nervous system and gastrointestinal tract. Heroin, commonly called smack is chemically diacetylmorphine which is a white, odourless, bitter crystalline compound. Cannabinoids are a group of chemicals, which interact with cannabinoid receptors present principally in the brain. Natural cannabinoids are obtained from the inflorescences of the plant Cannabis sativa. The flower tops, leaves and the resin of cannabis plant are used in various combinations to produce marijuana, hashish, charas and ganja. Generally taken by inhalation and oral ingestion, these are known for their effects on cardiovascular system of the body. It interferes with the transport of the neuro-transmitter dopamine. Cocaine, commonly called coke or crack is usually snorted. It has a potent stimulating action on central nervous system, producing a sense of euphoria and increased energy. Excessive dosage of cocaine causes hallucinations. Other well-known plants with hallucinogenic properties are Atropa belladona and Datura. These days cannabinoids are also being abused by some sportspersons. Drugs like barbiturates, amphetamines, benzodiazepines, and other similar drugs, that are normally used as medicines to help patients cope with mental illnesses like depression and insomnia, are often abused. Morphine is a very effective sedative and painkiller, and is very useful in patients who have undergone surgery. Several plants, fruits and seeds having hallucinogenic properties have been used for hundreds of years in folk-medicine, religious ceremonies and rituals all over the globe.
Which is used as an effective sedative and painkiller and is useful to patients who have undergone surgery?

The line of sight distance for two antennas of height 100 m and 400 m above earth surface is approximately: (Given \( R = 6400 \text{ km}, \sqrt{20} = 4.5 \))

The light rays travel from a glass slab with refractive index \( \mu_1 \) to the second slab with refractive index \( \mu_2 \). The refractive index of the second slab with respect to the first one is: (Assume that the two slabs have the same thickness)

In gel electrophoresis the separated DNA fragments can be visualised: