Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Phytochrome - Floral Induction
Phytochrome a pigment that exists in two different inter convertible forms was discovered by Hendricks and Borthwrick et. al. and was chemically extracted and purified. Since then exact chemical nature is now established. Phytochrome has two parts the light absorbing portion (chromophore) and the large protein. Action spectra of photoperiodism, germination, and breaking of dormancy etc.-clearly establish phytochrome as the 'photomorphogenesis' pigment as its absorption spectra genuinely overlaps the action spectra of the above phenomenon. Phytochrome was found located mostly in the cell membranes. It exists in red-light absorbing form and far-red light absorbing forms. Phytochrome (R) absorbs red light and is converted into phytochrome (FR), a far-red light absorbing form.
Phytochrome Fr on exposure to far red light is reconverted to phytochrome R. Phytochrome (Fr) can also be converted to phytochrome (R) in prolonged darkness. The action of phytochrome through gene repression and depression production of flowering inducing hormones enzyme activation leading to 'floral apex' from a vegetative apex is roughly understood. But all the steps are not clear yet. Phytochrome regulated morphogenesis results for change in gene 13 transcription. Several phytochrome activated genes have been identified and isolated. One of them is PAL gene.
Trans Myocardial laser re vascularisation (TMLR) : Patients who have severe angina and diffuse coronary artery disease with no graftable vessels are at limes subjected to TMLR. I
If you have water, 10% sucrose, and 40% sucrose solution. Which solutions were isotonic to each other?
Determine the bony walls of the Maxillary sinus: The Anterior wall of the sinus has thin compact bone above the apex of the canine teeth which may extend to the lateral pirifor
Q. What is the structure through which the neural impulse is transmitted from one cell to another? What are its parts? The structure through which the neural impulse passes fro
What is Congenital Mitral Stenosis ? The onset of symptoms or signs depends on severity of the stenosis, severe the stenosis earlier the presentation. With significant MS, the
Define Tests to Measure Flexibility Component in the Humans? The flexibility component measures the elasticity or range of motion around a joint. This component of physical fi
Q. How does the embryo turn from gastrula into neurula? How is the neural tube formed? What is the embryonic origin of the nervous system in vertebrates? The neurula stage is c
Assume you were given a mixture consisting of one molecule each of all possible sequences of a smallish protein of molecular weight 4800 daltons. If the average molecular weight of
Human embryo: After fertilization the human embryo divides mitotically and develops two membranes: 1) Chorion 2) Amnion Functions of the membranes: i) Chorion : It
A n a e m i a It is defined as decrease in the amount of haemoglobin (Hb) per unit of blood. This may or may not be accompanied by a reduction in the red blood cells (RBC
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd