The pioneer species of primary succession in water are:

Observe the given figures and answer the question

Identify the statements which hold true for Miller's experiment:
(A) He created an electric discharge in a closed flask containing CH4, N2, NH3 and water vapour at 1200°°C
(B) He created electric discharge in a closed flask containing CH4, N2, NH3 and water vapour at 800°C
(C) He observed the formation of amino acids only
(D) He observed the formation of amino acids, sugars and fats
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Polymerase Chain Reaction (PCR) can be used to:
(A) Detect HIV in AIDS patients
(B) Detect mutations in cancer patients
(C) Observe antibody antigen reaction
(D) Identify some of the genetic disorders
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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?

The process of evolution of different species in a given geographical area starting from a point and dispersing to other areas is called as:

Match List-l with List-II

List-I (Disorders)	List-II (Features)
(A) Colour blindness	(I) 45 with 'XO'
(B) Haemophilia	(II) Trisomy of 21\textsuperscript{st} chromosome
(C) Down's Syndrome	(III) Mutation of certain genes on 'X' chromosome
(D) Turner's Syndrome	(IV) Protein involved in clotting of blood

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Verhulst-Pearl Logistic Growth is described by the following equation:
dN/dt = rN (K-N)/K, where 'r' denotes the-

Methyl chloride on treatment with excess of ammonia yields:

RNA interference:
(A) Involves silencing of specific mRNA
(B) Involves silencing of specific DNA
(C) is used to produce pest-resistant plants
(D) is used to produce recombinant insulin
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The integrating factor of the differential equation \(x \frac{d y}{d x}+2 y=x^2\) is:

Which one of the following is not true for a molecule that can act as a genetic material?

Which of the following statements are true for a conductor in an external electric field?
(A) Inside a conductor, the electric field is non-zero.
(B) At the surface of a charged conductor, the electric field must be normal to the surface at every point.
(C) The interior of a conductor can have no excess charge in a static situation.
(D) Electrostatic potential is constant throughout the volume of the conductor and has the same value on its surface.
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What product(s) is formed when an Alkyl halide undergoes ammonolysis ?
(A) Primary amine
(B) Secondary amine
(C) Quaternary ammonium salt
(D) Tertiary amine
Choose the correct answer from the options given below: