Differentiation and redifferentiation are processes of cellular specialization in plants
1. Differentiation: The process in which unspecialized meristematic cells develop into specialized cells with specific functions.
Example: Cambium differentiating into xylem and phloem.
2. Redifferentiation: The process where previously differentiated cells regain the ability to divide or specialize again for a new function.
Example: Secondary growth in woody plants, where parenchyma cells redifferentiate into vascular tissues.
Match the following
List - I (Transgenic Plant) | List - II (Resistance) | ||
---|---|---|---|
A. | Papaya | I. | Phytophthora |
B. | Bt cotton | II. | Ring spot virus |
C. | Tomato | III. | Insect |
D. | Potato | IV. | Pseudomonas |
Derive an expression for maximum speed of a vehicle moving along a horizontal circular track.
Predict the type of cubic lattice of a solid element having edge length of 400 pm and density of 6.25 g/ml.
(Atomic mass of element = 60)