What was the reason of the shoot tip showing growth when coleoptile tipes were removed and agar block was kept?

Dr. F. Went noted that is coleoptile tips were removed and placed on agar for one hour , the agar would produce a bending when placed on one side of freshly cut coleoptile stumps what is the significance of this experiment

Dr. F. Went noted that if coleoptile tips were removed and placed on agar for one hour , the agar would produce a bending when placed on one side of freshly cut coleoptile stumps .Of what sighifcance is this exeriment

Assertion : The constantly dividing cells both at the root apex and the shoot apex, show the meristematic phase of growth. Reason : The cells of this region are rich in protoplasm and are without nuclei.

The graph shows the effect of liver and kidneys in dogs on the amount of urea in the blood. On the graph, two marks O and X shows the time when these two organs were removed . Which mark shows the removal of which organ ?

In laboratory experiments, two species of the protist Paramecium (species 1 and 2) were grown alond and in the presence of the other species. The following graphs show growth of species 1 and species 2, both alone and when in mixed culture with the other species. Which of the following conclusions can be drawn from the graphs ?

A 4.00 kg block carrying a charge Q = 50.0muC is connected to a spring for which k = 100 N/ m. The block lies on a frictionless horizontal track, and the system is immersed in a uniform electric field of magnitude E = 5.00 xx 10^5 V/m , directed as shown in figure. If the block is released from rest when the spring is unstretched (at x = 0). (a) By what maximum amount does the spring expand? (b) What is the equilibrium position of the block? (c) Show that the block's motion is simple harmonic and determine its period. (d) Repeat part (a) if the coefficient of kinetic friction between block and surface is 0.2.

In brief state what happens when (a) Dry apricots are left for sometime in pure water and later transferred to sugar solution? (b) A red blood cell is kept in concentrated saline solution? (c) The plasma-membrane of a cell breaks down? (d) When Rheo leaves are boiled in water first and then a drop of sugar syrup is put on it, osmosis does not occurs, due to the death of the cells of the leaf. This shown that selective permeability is property of living plasma membrane. (e) Golgi complex helps in the package, storage and transfer of proteins synthesised by ribosomes. Thus, when ribosomes are removed the cell will not function properly.

The following experiment was performed to test the effect of auxin on the plant growth . Five plant seedlings ( all growing actively ) were prepared as below , they were unilaterally illuminated ,and growth was measured after 10 days. Treatments : Plant A : Tip not removed , nothing applied Plant B : Tip removed , nothing applied Plant C : Tip removed , gelation block with cytokinin was placed on the cut edge Plant D : Tip removed gelation block with auixn placed on the cut edge.

The following graph show the temprature of a patient in a hospital, recorded every hour, (a) What was the patient's temperature at 1 p.m.? *b) When was the patient's temperature 38.5^@ C ? (c) The patient’s temperature was the same two times during the period given. What were these two times? (d) What was the temperature at 1.30 p.m.? How did you arrive at your answer? (e) During which periods did the patients’ temperature showed an upward trend?