1. phototropism
2. hydrotropism
3. chemotropism
4. gravitropism
gravitropism
1. 10%
2. 15%
3. 25%
4. 35%
25\%
1. Strasburger
2. Godlewski
3. Western
4. Dixon and Jolly
Dixon and Jolly
1. 2-5 atm
2. 1-5 atm
3. 0.1-0.2 atm
4. 4-6 atm
1-5 atm
1. pulsation theory
2. relay pump theory
3. transpiration pull theory
4. root pressure theory
5. atmospheric pressure theory
pulsation theory
1. tertiary wall
2. middle lamella
3. plasmalemma
4. primary cell wall
tertiary wall
1. zone of cell differentiation
2. zone of cell formation
3. zone of cell elongation
4. terminal portion of root
zone of cell differentiation
1. diffusion
2. osmosis
3. surface tension
4. active transport
surface tension
1. Thyroid
2. Parathyroid
3. Thymus
4. Posterior lobe of pituitary
Thymus
1. ACTH from pituitary
2. FSH from pituitary
3. thyroxine from thyroid
4. adrenaline from adrenal medulla
thyroxine from thyroid