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

Animal pharming, A n i m a l pharming Using animals...

A n i m a l pharming Using animals as bioreactors is also cost-effective and advantageous because animals naturally carry the cellular mechanisms needed to

Vaccines, Ask quesWhat type of antigenic agents may constitute vaccines? ti...

Ask quesWhat type of antigenic agents may constitute vaccines? tion #Minimum 100 words accepted#

Economically important fermentation products-rice beer, Normal 0 ...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Explain neurosyphilis, Neurosyphilis  Symptomatic neurosyphilis, includ...

Neurosyphilis  Symptomatic neurosyphilis, including ophthalmic or otic infection, requires treatment with high doses of aqueous penicillin G IV or procaine penicillin G IM with

Show estrogen level and the lh level in the menstrual cycle, Q. What is the...

Q. What is the relationship between the estrogen level and the LH level in the menstrual cycle? What is the function of LH in the menstrual cycle and when does its blood concentrat

Pond sucession, make a assignment of pond succesion

make a assignment of pond succesion

What is the function of the umbilical cord, What is the function of the umb...

What is the function of the umbilical cord? The umbilical cord is a set of blood vessels that connects the fetus with the placenta. In the fetus one extremity of the cord inse

What are the major cellular features of fungi, Q. What are the major cellul...

Q. What are the major cellular features of fungi? There are pluricellular and unicellular fungi. All fungi are heterotrophs and eukaryotes. Fungi have cells with cell wall m

Determine the procedure of armamentarium, Determine the Procedure of Armame...

Determine the Procedure of Armamentarium 1. Make an impression of the mandibular ridge and pour the cast in type 3 gypsum 2. Apply separating medium and allow it to dry 3

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