1.HIV attacks :
( A ) B-lymphocytes
( B ) Antibodies
( C ) T-lymphocytes
( D ) Erythrocytes
Answer-( C )
2. Aquatic fern which is an excellent biofertiliser :
( A ) Azolla
( B ) Salvinia
( C ) Marsilea
( D ) Pteridium
Answer-( A )
3. Most famous bacterial fertilizer is :
( A ) Nitrosomonas
( B ) Nitrobacter
( C ) Nitrosococcus
( D ) Rhizobium
Answer-( D )
4. Group of bacteria used in biogas production is :
( A ) Eubacteri
( B ) Organotrophs
( C ) Methanotrophs
( D ) Methanogens
Answer-( D )
5. Stimulant found in Cola, Tea and Cocoa is :
( A ) Cocaine
( B ) Tannin
( C ) Amphetamine
( D ) Caffeine
Answer-( D )
6. Opiates and heroin are obtained from :
( A ) Thea
( B ) Papaver
( C ) Cannabis
( D ) Theobroma
Answer-( B )
7. Heroin is got from plant of Family:
( A ) Leguminosae
( B ) Papaveraceae
( C ) Liliacae
( D ) Solanaceae
Answer-( B )
8. Stem cells arise from :
( A ) Yolk sac
( B ) Liver of foetus
( C ) Bone marrow
( D ) All
Answer-( D )
9. Which antibody initatiates allergic reaction ?
( A ) IgM
( B ) IgE
( C ) IgD
( D ) IgA
Answer-( B )
10. The drug that functions as depresent of CNS is :
( A ) Amphetamine
( B )Caffeine
( C ) Opium
( D ) Hallucinogen
Answer-( C )
11.LSD is :
( A ) Narcotic
( B ) Stimulant
( C ) Antidepresent
( D ) Hallucinogen
Answer-( D )
12.Stimulant cocaine is obtained from :
( A ) Rauwolfia
( B ) Erythroxylon
( C ) Papaver
( D ) Eucalptus
Answer-( B )
13.AZT is used in treatment of
( A ) Malaria
( B ) AIDS
( C ) T.B.
( D ) Kala-azar
Answer-( B )
14. In certain cases for early and accurate detection of disease we may use
( A ) ELISA
( B ) Culture
( C ) Chemical
( D ) Analytical
Answer-( A )
15. Tuberculosis is transmitted by-
( A ) Air
( B ) Water
( C ) Insect
( D ) Contact
Answer-( A )
16. Opium is obtained from
( A ) Papaver somniferum
( B ) Erythroxylum coca
( C ) Cannabis sativa
( D ) Atropa belladonna
Answer-( A )
17. B-lymphocytes are produced in
( A ) Bone marrow
( B ) Thymus
( C ) Blood
( D ) Lymph
Answer-( A )
18. In retroviruses, genetic material is :
( A ) RNA
( B ) DNA
( C ) hn RNA
( D ) Split gane
Answer-( A )
19. The common cold is caused by
( A ) Rhino virus
( B ) Streptococcus pneumoniae
( C ) Salmonella typhi
( D ) Pasmodium vivax
Answer-( A )
20. A Toxic substance responsible for chill and high fever in Malaria is
( A ) Interferon
( B ) haemozoin
( C ) hirudin
( D ) colostrum
Answer-( B )
