Select the incorrect statement with reference to Rh grouping. A. Erythroblastosis foetalis is a condition observed having foetus with Rh-ve$Rh^{-ve}$ blood and mother with Rh+ve$Rh^{+ve}$ blood. B. Rh antigen is observed on RBCs in the majority of human beings. C. Before blood transfusion, Rh group should also be matched. D. Rh incompatibility is observed when a pregnant mother is Rh-ve$Rh^{-ve}$ and the foetus is Rh+ve$Rh^{+ve}$ . E. Erythroblastosis foetalis can be avoided by administering anti-Rh antibodies to the mother immediately after the delivery of the second child. Choose the answer from the options given below :

Core Logic

Eosinophils constitute 2 - 3%$2 - 3\%$ of total WBCs. Hence its value is approximately 2%$2\%$ to 3%$3\%$ of 8000/cu mm$8000/\mathrm{cu\ mm}$:

So, eosinophils range from 160 - 240 /cu mm$160 - 240 /\mathrm{cu\ mm}$.

Lymphocytes constitute 20 - 25%$20 - 25\%$ of total WBCs. Hence its value is approximately 20%$20\%$ to 25%$25\%$ of 8000/cu mm$8000/\mathrm{cu\ mm}$:

So, lymphocytes range from 1600 - 2000 /cu mm$1600 - 2000 /\mathrm{cu\ mm}$.

Pattern Recognition

Memorize the standard percentages: Neutrophils (60-65%$60-65\%$), Lymphocytes (20-25%$20-25\%$), Monocytes (6-8%$6-8\%$), Eosinophils (2-3%$2-3\%$), Basophils (0.5-1%$0.5-1\%$). Apply directly to total count.

Chapter Mix

Class 11 Biology: Body Fluids and Circulation