Types of plant geotropisms
Write down the types of plant geotropisms? Why do root and stem present opposite geotropisms?
Expert
The types of geotropisms are positive geotropism, that in which the plant grows for the gravitational force, as for instance in roots, and the negative geotropism, which against the gravitational force, for instance, in stem. Stem geotropism and Root geotropism are opposed because of different sensitivities to auxin concentration in these structures. The following experiment can demonstrate phenomenon: Root and Stem are placed in a horizontal position (parallel to ground) and naturally auxins concentrate along with their bottom part.
Under this situation it is observed that the stem grows upwards and root grows downwards. This occurs because in stem the high auxin concentration in bottom creates these sides grow (longitudinally) more and the structures arcs upwards. In root the high auxin concentration in the bottom inhibits growth of this side and upper side grows more making the root to curve downwards.
Explain the term peripheral resistance?
How does temperature affect the action of enzymes upon their substrates?
State the germ layer from which coeloms initiate?
Logistics Management: Managing the flow of goods material between people and places is termed as logistics management. This kind of process is prevalent in big organizations, particularly those that interact with other companies to purchase their supp
Give a brief explanation of diffusion.
Techniques of Scientific Management Time Study : Time study is the technique used to measure the time that may be take
Describe the term goiter? Also explain endemic goiter? How this problem is socially resolved?
Describe the main cellular functions of potassium? Answer: Besides being significant for the osmotic regulation and for acid-base equilibrium (that is, pH) potassium
Define the cells which are responsible for the making of antibodies?
Criticisms of the human relations approach Scientific validity: although the Hawthorne Experiments profoundly influenced the manager in managing their employees, the
18,76,764
1952038 Asked
3,689
Active Tutors
1413174
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!