Distinguish between erythrocytes and leucocytes (life-span).
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The average life of erythrocytes is about 120 days and that of leucocytes is 14-15 days.
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State the exact location of the following structures:
(i) Leydig cells
(ii) Prostate gland
(iii) Macula lutea
(iv) Mitral valve
(v) Nissl granules
Define Apical dominance
What are Phytohormones ? Give one example.
What is the significance of transpiration. State in two points.