Hormones controlling other functions, Biology

Assignment Help:

Hormones Controlling Other Functions

Crustacean's exhibit pronounced capacity for physiological color changes. It is known that the color changing mechanisms in Crustacea are regulated by hormones. The animals have a range of chromatophores consisting of different pigments: the melanophores usually contain black pigments. Many crustaceans are brilliantly colored animals and they have the capacity to change their body color. Body color is often because of colored pigments present within certain cells. The cells concerned are called chromatophores. Color change may be

(1) Either because of synthesis of new pigments or destruction of existing pigments. In other words it is because of a quantitative change in the pigments of the body. This type of color change called morphological color change is very slow, taking considerably long time to accomplish.

(2) Though, animals can as well change their color without recourse to synthesis or destruction of pigments. That is, there is no change in the quantity of pigments present. This involves movement of already existing pigment granules in the chromatophores. When the pigment granules within the chromatophores are concentrated at a point, the cells appear pale or blanch; while the pigment granules are dispersed throughout the cell, it appears brightly colored. This sort of color change is called physiological color change, and is comparatively more rapid as compared morphological color change.


Related Discussions:- Hormones controlling other functions

Explain in brief - chitinous, Explain in brief Chitinous? A structure w...

Explain in brief Chitinous? A structure which is composed of chitin, a complex carbohydrate composed of linearly arranged Nacetyl-glucosamine units. Chitin is a characteristic

Issues to be addressed by counsellor, Issues to be addressed by counsellor ...

Issues to be addressed by counsellor while counselling a diabetic patient The following issues should also be addressed while counselling a diabetic patient and their family me

Blood circulation and respiration, A person is declared to be dead upon the...

A person is declared to be dead upon the irreversible cessation of spontaneous body functions: brain activity, or blood circulation and respiration. However, only about 1% of a per

Flying fish pisces, the characteristics of flying fish belong to pisces

the characteristics of flying fish belong to pisces

Functions of polysaccharides, FUNCTION S OF POLYSACCHARIDES Chitin...

FUNCTION S OF POLYSACCHARIDES Chitin is a structural component of fungal cell wall and exoskeleton of insects, crustaceans and some other arthropods. Peptidoglycan o

Structure of spermatozoan, STRUCTUR E OF SPERMATOZOAN Structure of spe...

STRUCTUR E OF SPERMATOZOAN Structure of sperm is divided into 3 parts -      (1) Head                  (2) Middle piece             (3) Tail 1 .       HEAD

#white blood cell, #White blood cell has mainly 5 types right? which is Neu...

#White blood cell has mainly 5 types right? which is Neutrophil,Monocytes,lymphocytes, basophil and Eosinophil? I wwanted to know is phagocytes a white blood cell, if yes then why

Explain sol -gel transformation, Explain sol -gel transformation During...

Explain sol -gel transformation During sol -gel transformation, a three dimensional network is formed by the interlocking of dispersed particles. The liquid phase is entrapped

Determine the functions of human body system, Determine the function of hum...

Determine the function of human body system Human body has different systems to perform different functions. A system consists of organs to perform a particular set of function

Tools of lower paieolithic age, Tools of lower paieolithic age Pleistoc...

Tools of lower paieolithic age Pleistocene times there were huge herds of very large mammals. Bones of such large mammals were found associated with the human fossil finds and

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd