Which is the particular type of drug that is obtained from the plant whose one flowering branch is shown below? 
So, the correct answer is 'Hallucinogen'.
At which stage of HIV infection does one usually show symptoms of AIDS: 
Which of the following is not a sexually transmitted disease? [2015 RS]
► Encephalitis is a disease of inflammation of the brain. It is not transmitted sexually. Most commonly it is caused by a virus.
► Syphilis is a bacterial infection usually spread by sexual contact. The disease starts as a painless sore — typically on your genitals, rectum or mouth. Syphilis spreads from person to person via skin or mucous membrane contact with these sores.
► Trichomoniasis (or “trich”) is a very common sexually transmitted disease (STD). It is caused by infection with a protozoan parasite called Trichomonas vaginalis.
► AIDS (Acquired Immune Deficiency Syndrome) is the final and most serious stage of HIV disease, which causes severe damage to the immune system.
HIV has been found in saliva, tears, nervous system tissue, blood, semen (including pre-seminal fluid, or "pre-cum"), vaginal fluid, and breast milk. However, only blood, semen, vaginal secretions, and breast milk have been proven to transmit infection to others.
Transmission of the virus occurs:
HIV that causes AIDS, first starts destroying: [2015 RS]
The active form of Entamoeba histolytica feeds upon: [2015 RS]
Which of the following viruses is not transferred through semen of an infected male? [2015 RS]
Hence , the correct answer is option B: Chikungunya virus.
Match each disease with its correct type of vaccine: [2015 RS]
(A) - (iv) Tuberculosis vaccine (BCG) has inactivated bacteria.
(B) - (iii) In the whooping cough vaccine, there are killed pathogens of Bordetella pertussis which cause whooping cough.
(C) - (ii) In DPT, diphtheria toxoid is present.
(D) - (i) Sabin polio vaccine contains inactivated virus.
Hence, the correct answer is option B.
Which of the following endoparasites of humans does show viviparity? [2015 RS]
Which one of the following immunoglobulins does constitute the largest percentage in human milk? [2015 RS]
Colostrum contains high levels of lgA, which gives passive immunity to foetus.
If you suspect a major deficiency of antibodies in a person, to which of the following would you look for confirmatory evidence? [2015 RS]
Serum globulins test provides confirmatory evidence measuring the deficiency of antibodies (γ -globulin) in a person.
Which of the following diseases is caused by a protozoan? [2015 RS]
Babesiosis is malaria like disease caused by protozoon-Babesia. In this desease haemoglobinuric fever takes place.
MALT constitutes about ________ per cent of the lymphoid tissue in human body.
Grafted kidney may be rejected in a patient due to: [2015 RS]
So, the correct answer is option A.
Asthma may be attributed to:
So, the correct answer is 'Allergic reaction of the mast cells in the lungs'
In higher vertebrates, the immune system can distinguish between self-cells and non-self. If this property is lost due to genetic abnormality and it attacks self-cells, then it leads to _________. 
Autoimmunity is a disorder of the body’s defence mechanism in which an immune response is elicited against its own tissues, which are thereby damaged or destroyed. Autoimmunity may be caused due to genetic or environmental factors.
Which part of the tobacco plant is infected by Meloidogyne incognita? 
Antivenom injection contains preformed antibodies while polio drops that are administered into the body contain: 
So, the correct answer is 'Attenuated pathogens'.