Use of biocontrol measures greatly reduce our dependence on:

Human activities have accelerated rate of species extinction in the world. The major cause for it are
A. Habitat loss and defragmentation
B. Habitat loss and fragmentation
C. Over-exploitation
D. Alien species invasions
Choose the correct answer from the options given below:

In agarose gel electrophoresis, the separated DNA fragments can be visualised by staining the DNA with a compound, known as

Which one of the following diseases is non-infectious?

To release DNA and other macromolecules from a bacterial cell, the cells are treated with:

Read the following passage carefully and answer the given questions.
The B-lymphocytes produce an army of proteins in response to pathogens. Each antibody molecule has four peptide chains, two small called light chains and two longer called heavy chains. Virus-infected cells secrete proteins called interferons which protect non-infected cells from further viral infection. Symptoms of allergic reactions include sneezing, watery eyes, running nose and difficulty in breathing. The use of drugs like anti-histamine, adrenalin and steroids quickly reduce the symptoms of allergy. Lymphoid organs are the organs where origin and/or maturation and proliferation of lymphocytes occur. The primary lymphoid organs are bone marrow and thymus. After maturation the lymphocytes migrate to secondary lymphoid organs like spleen, lymph nodes, tonsils, Peyer's patches of small intestine and appendix. Heroin commonly called smack is chemically diacetylmorphine which is a white, odourless, bitter crystalline compound. This is obtained by acetylation of morphine, which is extracted from the latex of poppy plant Papaver somniferum.
Which one of the followings drug does not reduce the symptoms of allergy quickly?

Match List - I with List - II.

List - I	List - II
(A) Embryo with 8-16 blastomeres	(I) Stem cell
(B) Cells having the potency to give rise to all the tissues and organs	(II) Oxytocin
(C) The hormone released from maternal pituitary during foetal ejection reflex	(III) Progesterone
(D) The hormone released by corpus luteum	(IV) Morula

Choose the correct answer from the options given below :

The probability distribution function of a normal variate with mean \(\mu\) and variance \(\sigma^2\) is given by :
\(f(x)=\frac{1}{\sigma \sqrt{2 \pi}} e^{-\frac{1}{2}\left(\frac{x-\mu}{\sigma}\right)^2},-\infty< x< \infty,-\infty < \mu < \infty, \sigma>0\)
If \(y=f(x)\) be the normal probability curve, then which of the following is correct?
(A) The normal curve is symmetrical about the line \(x=\mu\).
(B) Mean, median and mode of the distribution coincide.
(C) \(Y\)-axis is an asymptote to the normal curve.
(D) If \(x\) increases numerically, \(f(x)\) decreases rapidly.
Choose the correct answer from the options given below :

Four different electrolyte solutions with the concentrations given below have the same molar conductivity value of \(1.29 \times 10^{-4} \mathrm{~S} \mathrm{~m}^2 \mathrm{~mol}^{-1}\). Arrange them in increasing order of their conductivity values:
(A) 0.1 M
(B) 0.075 M
(C) 0.15 M
(D) 0.05 M
Choose the correct answer from the options given below:

Reproductive capacity of a flowering plant can be appreciated by finding out the:
(A) Size of the embryo sac in the ovule
(B) Number of eggs in the embryo sac
(C) Size of eggs in the embryo sac
(D) Number of ovules in the ovary
Choose the most appropriate answer from the options given below:

Number of unpaired electrons in the square planar [Pt(CN)₄]^2- are :

If A is a 3 × 3 square matrix such that |A| = 2, then |3 adj A| is

The pioneer species of primary succession in water are: