Higher Secondary level Zoology kernels for your kind perusal.
2. Natural killer cells are ___. a) T-Lymphocytes b) B-Lymphocytes c) Stem cells d) Delta cells
3. Cell mediated immunity is the responsibility of ____. a) cytotoxic lymphocytes b) antigen presenting cells c) B-type of hymphocytes d) T4 cells
4. Primary Lymphoid organ in birds is _____. a) Bone marrow b) Thymus c) Bursa fabricus d) spleen
5. The thymus develops at above ___. a) 12th week of gestation b) 3rd week of gestation c) 6th week of gestation d) 4th week of gestation
6. The primary function of thymus is ___. a) Production of phagocytes b) Production of erythrocytes c) Production of T cells d) Production of B cells
7. The total number of lymph nodes in human body is about___. a) 500 b) 700 c) 600 d) 800
8. The largest lymphoid organ is ___. a) Thymus b) Bone marrow c) Liver d) Spleen
9. An example for haptens is ____. a) Hydrogen sulphide b) Hydrogen per oxide c) Surface protein d) Dinitro Phenol
10. The two H-chains of immunoglobins are joined by ___. a) Disulphide bond b) 1-5 disulphide S-S bonds c) Hydrogen bond c) Nitrogen bond
11. Who explained the value of graft rejection ? a) Medewar b) Johansson c) Garrot d) Gallo
12. The array of HLA alleles on a homologue of our chromosome 6 is known as__. a) VS graf b) TNF c) Inter leukin d) Haplotype
13. The viral RNA genome is converted into DNA copy by viral enzyme ____. a) transcriptase b) reverse transcriptase c) oxydase d) oxy-reductase
14. Name of the Leucocyte that increase during the allergic reactions – a) Basophils b) Eosinophils c) Neutrophils d) Lymphocytes
15. The spleen serves as the grave yard for effete (aged) _____ cells a) Red blood b) Antigens c) White blood d) Muscle
Score = Correct answers:
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