1. passive absorption
2. active absorption
3. osmosis
4. endocytosis
passive absorption
1. ion exchange hypothesis
2. Donnan equilibrium hypothesis
3. simple diffusion hypothesis
4. None of the above
Donnan equilibrium hypothesis
1. endomycorrhizae
2. ectomycorrhizae
3. Both (a) and (b)
4. ectendomycorrhizae
Both (a) and (b)
1. positive
2. negative
3. either
4. None of these
negative
1. Na+
2. K+
3. Ca2+
4. All of these
Ca2+
1. ions are active
2. ions move freely
3. energy is expended
4. ions move positively
energy is expended
1. SA-node
2. AV-node
3. Medulla
4. Purkinje fibres
SA-node
1. islets of Langerhans
2. sinoatrial node
3. oxyntic cells of stomach
4. dorsal root ganglia of spinal cord
sinoatrial node
1. blood
2. lymph
3. monocytes
4. B-lymphocytes
B-lymphocytes
1. birds
2. reptiles
3. amphibians
4. Both (b) and (c)
birds