Ex situ conservation include:

Observe the table and answer the given question :

How many codons with 'A' at second position code for amino acids ?

Read the following passage carefully and answer the given questions.
Bioactive molecule, cyclosporin A, that is used as an immunosuppressive agent in organ-transplant patients, is produced by the fungus Trichoderma polysporum. Statins produced by the yeast Monascus purpureus have been commercialised as blood-cholesterol lowering agents. It acts by competitively inhibiting the enzyme responsible for synthesis of cholesterol. Baculoviruses are pathogens that attack insects and other arthropods. The majority of baculoviruses used as biological control agents are in the genus Nucleopolyhedrovirus. These viruses are excellent candidates for species-specific, narrow spectrum insecticidal applications. They have been shown to have no negative impacts on plants, mammals, birds, fish or even on non-target insects. BOD refers to the amount of the oxygen that would be consumed if all the organic matter in one liter of water were oxidised by bacteria. The sewage water is treated till the BOD is reduced. Cheese, is one of the oldest food items in which microbes were used. Different varieties of cheese are known by their characteristic texture, flavour and taste. For example, the large holes in 'Swiss cheese' are due to production of a large amount of CO₂ by a bacterium named Propionibacterium sharmanii.
Statins are produced by:

Arrange the following in correct sequence with respect to the events of menstrual cycle:
(A) Development of primary follicle to graafian follicle
(B) Attainment of peak level in luteinising hormone
(C) Release of ovum by graafian follicle
(D) Formation of corpus luteum
Choose the correct answer from the options given below:

The greatest biodiversity on the earth is seen in :

Match List I with List II

List I (Technique/term)	List II (Features)
(A) Amniocentesis	(I) Ligation of fallopian tube
(B) Maternal mortality rate	(II) Ligation of vas deferens
(C) Vasectomy	(III) Death rate
(D) Tubectomy	(IV) Testing of sex

Choose the correct options:

The menstrual flow results due to:
A. Increased estrogen levels
B. When released ovum is not fertilized
C. When pregnancy occurs
D. Breakdown of the endometrial lining of the uterus and its blood vessels

According to Alexander Zaitsev the most preferred product for dehydrohalogenation of 2-Bromopentane will be :

The most suitable substrates for preparation of following alcohol is

Read the following passage carefully and answer the given questions.
Immune System in the Body
The human immune system consists of lymphoid organs, tissues, cells and soluble molecules like antibodies. The primary lymphoid organs are bone marrow and thymus where immature lymphocytes differentiate into antigen-sensitive lymphocytes. After maturation the lymphocytes migrate to secondary lymphoid organs like spleen, lymph nodes, tonsils, Peyer's patches of small intestine and appendix. The secondary lymphoid organs provide the sites for interaction of lymphocytes with the antigen, which then proliferate to become effector cells. The bone marrow is the main lymphoid organ where all blood cells including lymphocytes are produced. Each antibody molecule has four peptide chains, two small called light chains and two longer called heavy chains. Hence, an antibody is represented as H2L2. Different types of antibodies are produced in our body. IgA, IgM, IgE, IgG are some of them. 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.
Maturation of lymphocytes takes place in:

The corner points of the feasible region determined by the system of linear constraints are \((0,3),(1,1)\) and \((3,0)\).
Let \(Z=p x+q y\), where \(p, q>0\), be the objective function.
Then the condition on \(p\) and \(q\) so that the minimum of \(Z\)
occurs at \((3,0)\) and \((1,1)\) is:

Which of the following are the examples of aldol condensation?
A. \(2 CH _3 CHO \xrightarrow{\text { dil. } NaOH } CH _3 CHOHCH _2 CHO\)
B. \(2 CH _3 COCH _3 \xrightarrow{ Ba ( OH )_2} CH _3 COCH _2 C \left( CH _3\right)_2 OH\)
C. \(2 HCHO \xrightarrow{\text { dil. } NaOH } CH _3 OH\)
D. \(C _6 H _5 CHO \xrightarrow{\text { dil. } NaOH } C _6 H _5 CH _2 OH + HCOOH\)
Choose the correct answer from the options given below :

The secondary ecological succession begins in an area, where :