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.
Give a brief introduction of the term ‘Therapeutic cloning’?
Briefly mention some uses of karyotyping?
Which is the next stage after the morula stage? Specify the morphological attribute that describes this stage?
How caffeine effect the plant growth?
Assume the government wants to raise farmers' incomes. Why do price supports or acreage restriction programs cost society more than simply giving farmer's money?Price supports & acreage limitations cost society more than the dollar cost of
What are the cells generated in the first phase of the embryonic development termed?
Communication is a nature instinct of all living creatures. It is the basic need of all human beings. It plays all the more significant role in the present day organizations which are complex, dynamic and socially oriented. Effective communication keeps the organization vibrant, vital and smooth
Define briefly the terms Vasectomy and tubectomy?
What do you mean by Gliding joint?
Why the pteridophytes are better adapted to the dry land as compared to the bryophytes? Were pteridophytes always less abundant rather than the phanerogamic plants?
18,76,764
1956434 Asked
3,689
Active Tutors
1445498
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!