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

#title.cleavage., explain chemical changes during cleavage

explain chemical changes during cleavage

Adrenaline and noradrenaline, Both these neurotransmitter strengthen memory...

Both these neurotransmitter strengthen memory when they are released into the blood stream following learning. Stressful events stimulate release of stress hormones from the adrena

Portal hypertension, Portal Hypertension: If you review the portal cir...

Portal Hypertension: If you review the portal circulation you may recall that normal blood flow to and from the liver depends on proper functioning of  the portal vein, the he

How is sound vibration captured by the tympanum, Q. How is the sound vibrat...

Q. How is the sound vibration captured by the tympanum transmitted through the ossicular chain of the middle ear? The acoustic transmission from the middle to the external ear

Is the bacterium mrsa pathogenic or non-pathogenic, Is the bacterium MRSA p...

Is the bacterium MRSA pathogenic or non-pathogenic? MRSA bacteria are pathogenic. This group of bacteria belongs to Staphylococcus aureus family, which have grown resistant to

Vitreous expansion-contraction in physio-chemical property, Illustrates the...

Illustrates the vitreous expansion and contraction in the physio-chemical property? Vitreous Expansion and Contraction The positive charge in Na ions, NaCl molecule and

Energetic function of organic molecules, Q. What are the few examples of th...

Q. What are the few examples of the energetic function of organic molecules? Ans. Since they are complex molecules, organic molecules store large amount of energy, present

Algae, what are the characteristics of algae?

what are the characteristics of algae?

What structure replaces the graafian follicle, After ovulation:- (a) ...

After ovulation:- (a) what structure replaces the Graafian follicle (b) what hormone does it produce?   (a) After ovulation, the follicle is replaced by the cor

Explain class mammalia in animal kingdom, Explain Class Mammalia in animal ...

Explain Class Mammalia in animal kingdom? Class Mammalia: Mammals are distinguished by their hair and their mammary glands. Mammary glands, after which this group of vertebrate

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