Explain biological mechanisms, Biology

Assignment Help:

Biological mechanisms

Annual rhythm.
Innate behaviour pattern stimulated by environmental cues (shortened day length is the cue for preparation - candidates should explain that this is more reliable than factors such as temperature which may fluctuate; change in wind patterns is the cue for departure).
Biological clock mechanisms - explained in terms of the responses
Navigation methods - relevant to this bird, eg sun compasses, star patterns, Earth's magnetic field, possibly landmarks for northward journey. Explanation of the need for multiple methods of navigation required. Earth's movement with respect to the sun and the ability of the bird to compensate for this is explained.

Related Discussions:- Explain biological mechanisms

Zonation in the ocean, Q. Zonation in the ocean? The oceans play a majo...

Q. Zonation in the ocean? The oceans play a major role in determining the climate and sustaining life on earth. Oceans help to redistribute the solar energy, through ocean curr

Anatomy of coronary circulation, The epicardial coronary artery system cons...

The epicardial coronary artery system consists of the left and right coronary arteries, which normally arise from ostia located in the left and right sinuses of Valsalva, respectiv

Fats requirement in chronic diarrhoea, Q. Fats requirement in chronic diarr...

Q. Fats requirement in chronic diarrhoea? Total amount of fat may be restricted as its digestion and absorption is compromised. In order to increase on the calorie density of t

Excretion organ, why excretory organ of prawn is called green gland?

why excretory organ of prawn is called green gland?

How are membranes classified, Concerning their permeability how are membran...

Concerning their permeability how are membranes classified? Membranes can be divided as impermeable, permeable, semipermeable or selectively permeable. An impermeable membra

Agro industrial-phenolic compounds, Phenolic compounds Gossypol: Gos...

Phenolic compounds Gossypol: Gossypol is a toxic compound found in the cotton plant. It is concentrated in the cottonseed but can also be found in other parts of the cotton

Checker board (punnet''s square) method, CHECKER BOARD (PUNNET'S SQUARE) ME...

CHECKER BOARD (PUNNET'S SQUARE) METHOD 1. If the genotypes of the parents are known, the genotypes of their offspring can be easily predicted with the help of a chart c

Where in the cell can ribosomes be found, Where in the cell can ribosomes b...

Where in the cell can ribosomes be found? What is the main biological function of ribosomes? Ans) Ribosomes can be found free in the cytoplasm, adhered to the outer side of the

Explain process to maintain the quality of frying oil, Maintaining the qual...

Maintaining the quality of frying oil As frying continues, the level of oil in the fryer depletes. There are two beneficial frying fat quality factors affected during the fryi

What are cytokinins, What are cytokinins? Where are they made? Cytokini...

What are cytokinins? Where are they made? Cytokinins are phytohormones active in the promotion of cellular division; they slow down the aging of tissues and act together with a

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages