Jim Lloyd is a graduate of this biology department who went to complete his Ph.D
ID: 260886 • Letter: J
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Jim Lloyd is a graduate of this biology department who went to complete his Ph.D. in entomology and become the nation's leading expert on firefly communication. Lloyd demonstrated that member of each species communicates with one other by means of their flash frequency and duration. subsequently, he discovered that female of certain species mimic the signals of other species. By means of these descriptive signals, the female fatale female would entice courting males of other species to land near them. What is the apparent purpose of such interspecific communication?
If the essence of Darwinian fitness is differential reproduct9ion, why would worker bees sacrifice their lives in defense of the hive? For that matter why would a sterile caste evolve in the first place? By being sterile worker bees have no Darwinian fitness and these should extinguish (parish). Be careful how you state your answer.
Describe the classic vertebrate pattern of blood flow?
Where is the spiral valve of the shark located and what is its function?
imagine yourself as water molecule entering the water vascular system of a sea star. Describe the path of movement using anatomical terms as you enter and move to the tube foot.
The pedicellaria presumably protects the aboral surface of the asteroid from the colonization by the larva of other marine creatures. What kind of animal might have larva which would pose this threat. Give examples.
3. Jim Lloyd is a graduate of this bielogy department who went on to complete his PhD in entomology and become the nation's leading expert on firefly communication. Hoyd demonstrated that members of each species communicate with one another by means of their flash frequency and duration. Subsequently, he discovered that females of certain species mimicked the signals of other species. By means of these deceptive signals the femme fatale females would entice courting males of other species to land near them. What is the apparent purpose of such interspecific communication? 4. If the essence of Darwinian fitness is differential reproduction, why would worker bees sacrifice their lives in defense of the hive? For that matter, why would a sterile caste evolve in the first place? By being sterile, worker bees have no "Darwinian fitness" and therefore should extinguish (perish). Be careful how you state your answer.Explanation / Answer
Purpose of interspecific communication is given by Jim Lloyd is that it deals with signals in which sender provides the hetrospecific receiver with referential information about objects external to itself.that objectd could be other individuals of same trophic level, accessible resources such as food, predator. Gram+ &Gram- bacteria have a commonquorum sensing system that mediates interspecific communication.Darwin consider that emotion & expressions of emotion behavior developed because of their importance in intra, interspecific communication.worker bees that defend the hives but dont reproduce,only way they can ensure their genes are passed on is by protecting the hives.All vertebrate have closed cardiovascular systems that moves blood in orderly & each class of vertebrates has a uniform pattern of circulation and blood is red in colour due to presence of haemoglobin which binds with oxygen.Shark have much shorter intestine than mammals so, compensate this problem shark having spiral valve in the surface area of intestine,a modification of ileum is called spiral valve.it is also found in diphnoi intestine.In sea star water vascular system provides a hydraulic pressure mechanism for locomotion.ampulla in sea star is thin walled, hollow structure & expands below intotthe tube feet it is also hollow, thin walled closed cylinder,bearing a suvker at its outer free end .muscle fibre are present in wall of ampullae & tube feet. tube feet is used for locomotion.
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