Select one of the given options which includes all sexually transmitted infections.

Sequentially arrange the evolutionary stages of humans from the given options.
(A) Australopithecines
(B) Homo habilis
(C) Dryopithecus
(D) Homo erectus
Choose the correct answer from the options given below:

The type of antibodies that produce the immune response in the presence of allergens like pollen, dust, animal dander etc. is _________.

The process of copying genetic information from one strand of DNA into RNA is termed as

Which of the following is/are NOT the step(s) used in separation and isolation of DNA fragments by gel electrophoresis technique:
(A) Staining with ethedium bromide
(B) Exposure to UV Radiation
(C) Cutting DNA fragments into small pieces by using restriction endonuclease
(D) Denaturation of DNA fragments
Choose the correct answer from the options given below :

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.
Mucosa associated lymphoid tissue is absent in the

Which of the following are the parts of mammary glands?
(A) Lactiferous duct
(B) Ampulla
(C) Areola
(D) Acrosome
Choose the correct answer from the options given below :

Interference fringes may be observed due to the superposition of two light waves represented by :

A proton has double the kinetic energy of an \( \alpha \)- particle. The ratio of the de-Broglie wavelength of the proton to that of \( \alpha \)- particle will be

The carbylamine reaction is used as a test for

Match List - I With List - II

List - I	List - II
(A) The area of parallelogram determined by vectors \(2 \hat{i}\) and \(3 \hat{j}\)	(I) 2
(B) The value of \((\hat{i} \times \hat{j}) \cdot \hat{k}+(\hat{j} \times \hat{k}) \cdot \hat{i}\)	(II) 4
(C) The value of a for which the vectors \(2 \hat{i}-3 \hat{j}+4 \hat{k}\) and \(a \hat{i}-6 \hat{j}+8 \hat{k}\) are collinear.	(III) 0
D. The value of \(\lambda\) for which the vectors \(2 \hat{i}+\hat{j}+\hat{k}\) and \(2 \hat{i}-4 \hat{j}+\lambda \hat{k}\) are perpendicular.	(IV) 6

Choose the correct answer from the options given below.

Which of the following facts are not true about GM crops ?
(A) They are more tolerant to abiotic stress (cold, drought, heat, salinity, etc.).
(B) They are pest-resistant.
(C) They cause early exhaustion of soil fertility.
(D) The food produced has decreased nutritional value.
Choose the correct answer from the options given below:

\(CH_3CH_2COCH_3 \xrightarrow{Y} CH_3CH_2CH_2CH_3\) The reagent Y is: