Induction in metamorphosis, Biology

Assignment Help:

Induction in Metamorphosis

Some of the morphogenetic changes throughout metamorphosis are found fo be quite independent of hormone action. For instance, generally during metamorphosis, the skin of the tail goes through degeneration under hormonal effect. It is observed that when the skin alone is removed from tail and transplanted onto the tail of other metamorphosing larva, it does not regress despite the existence of the hormone. But if the skin is grafted to the trunk with its underlying muscle in a developing tadpole, then it regresses.

So the hormone affects only the muscle directly that induces regression or progression of the skin depending upon the induction it receives from its underlying muscle of tail or trunk respectively. Likely tympanum is another instance of the induction process and is independent of direct hormone, action as its formation is induced by the tympanic cartilage.


Related Discussions:- Induction in metamorphosis

Chronic mitral regurgitation-mitral regurgitation, Chronic Mitral Regurgita...

Chronic Mitral Regurgitation Chronic mitral regurgitation may have different aetiological factors: 1) Rheumatic 2) Degenerative-myxomatous malformation 3) Infective

Determination of neural ectoderm by induction, Determination of Neural Ecto...

Determination of Neural Ectoderm by Induction Earlier you know that the dorsal mesoderm induces the ectoderm to differentiate into neural tissue. Spemann and his co-workers co

Greenfields hollow implant, In 1906, Greenfield described the fabrication a...

In 1906, Greenfield described the fabrication and insertion of an endossoeus implant. He for the first time, used a basket shaped, round, hollow implant made of an iridium-platinu

Stratification - aquatic ecosystems, Stratification - Aquatic ecosystems ...

Stratification - Aquatic ecosystems Aquatic ecosystems also exhibit marked stratification. In lake and ocean ecosystems light penetration, temperature and availability of oxyg

What are the autotrophic beings called, In the ecological study of food int...

In the ecological study of food interactions, what are the autotrophic beings called? In the Ecology autotrophic beings are called as producers because they synthesize the orga

Explain anterior pituitary gland secretes hormones, Explain anterior pituit...

Explain anterior pituitary gland secretes hormones The anterior pituitary gland secretes hormones that elevate  the blood glucose and therefore antagonize the action of glucose

Difference between cryptogamic and phanerogamic plants, What is the differe...

What is the difference among cryptogamic and phanerogamic plants? Cryptogamic (hidden sex organs) plants are those that do not show flowers or seeds. They comprise the bryophy

Can pathophysiology causes cardiovascular disease, Q. Can Pathophysiology c...

Q. Can Pathophysiology causes cardiovascular disease? Cigarette use activates platelets, increases circulating fibrinogen, increases heart rate, and elevates blood pressure. It

Importance of compliance, It is important to explain to the patient about i...

It is important to explain to the patient about importance of taking treatment regularly. In case he misses the dose or takes medicine or insulin irregularly, explain the side effe

Proteins of animal origin - milk, Proteins of Animal Origin - Milk: Mi...

Proteins of Animal Origin - Milk: Milk: A value of 3.5% protein is often considered as an average for milk. Milk protein has traditionally been divided into 2 classes - casei

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