The Convention on Biological Diversity held in Rio de Janeiro in 1992 is popularly known as

Which of the following is NOT a means of transmission of Sexually Transmitted Infections (STIs)?

Read the passage carefully and answer the questions given along
Our immune system plays the major role in preventing diseases when we are exposed to disease-causing agents. Immunity is of two types: (i) Innate immunity and (ii) Acquired immunity. The human immune system consists of lymphoid organs, tissues, cells and soluble molecules like antibodies. The immune system also plays an important role in allergic reactions, auto-immune diseases and organ transplantation. The primary lymphoid organs are bone marrow and thymus. The secondary lymphoid organs are spleen, lymph nodes, tonsils, Peyer's patches of small intestine and appendix. There is lymphoid tissue also located within the lining of the major tracts (respiratory, digestive and urogenital tracts) called mucosa associated lymphoid tissue (MALT). It is important to note that HIV/AIDS is not spread by mere touch or physical contact; it spreads only through body fluids. AIDS has no cure, prevention is the best option. Adolescence is accompanied by several biological and behavioural changes and surveys and statistics show that use of drugs and alcohol has been on the rise especially among the youth. Factors associated with drug and alcohol abuse among adolescents are a child's natural curiosity, stress, the perception among youth that it is 'cool' or progressive to smoke, media exposure and an unstable or unsupportive family structures and peer pressure. It is best to identify the situations that may push an adolescent towards use of drugs or alcohol, and to take remedial measures well in time.
Active immunization is most suitable method for:

Wings of an insect and wings of a bird are :

(p+q)\(^2\) = p\(^2\) +2pq+q\(^2\)=1 represents Hardy Weinberg equation. It is used in:

Observe the illustration and answer the following question:

Meiotic division in primary oocytes is arrested at:

Match List-I with List-II

List-I (Terms)	List-II (Explanation)
(A) Secondary productivity	(I) The amount of biomass or organic matter produced per unit area over a time period by plants
(B) Net primary productivity	(II) The rate of formation of new organic matter by consumers
(C) Gross primary productivity	(III) The available biomass for the consumption to heterotrophs (herbiviores and decomposers)
(D) Primary production	(IV) The rate of production of organic matter during  photosynthesis

Choose the correct answer from the options given below:

The radius of curvature of each surface of a double convex lens is 15 cm and the refractive index of the medium of the lens is 1.5. What is the focal length of the lens?

Which is the correct IUPAC name of the compound \(CH _3 CH = CHC ( Br )\left( CH _3\right)_2 ?\)

Last year, in a rat population of 600 rats, 600 new rats were added through reproduction in the current year to make a total population of 1200 rats.
Find the birth rate of this rat population.

The minimum value of the function \(f(x)=x^3+(10-x)^3\) occurs at :

Identify the correct statement about decomposition.
(A) Decomposition is largely an oxygen requiring process.
(B) Decomposition rate is slower if detritus is rich in lignin and chitin.
(C) Decomposition is faster if detritus is rich in lignin and chitin.
(D) Decomposition is an anaerobic process.
Choose the correct answer from options given below:

Read the following passage carefully and answer the given questions. During anaerobic sludge digestion, bacteria produce a mixture of gases such as methane, hydrogen sulphide and carbon dioxide. These gases form biogas and can be used as source of energy as it is inflammable. The bioactive molecule, cyclosporin A, that is used as an immunosuppressive agent in organ-transplant patients, is produced by the fungus Trichoderma polysporum. You must have noticed that bottled fruit juices bought from the market are clearer as compared to those made at home. This is because the bottled juices are clarified by the use of pectinases and proteases. 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. The BOD test measures the rate of uptake of oxygen by microorganisms in a sample of water and thus, indirectly, BOD is a measure of the organic matter present in the water.
Cyclosporin A, that is used as an immunosuppressive agent in organ-transplant patients, is produced by -