Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Pheromones Serving Functions Other than Reproduction
Besides sexual responses as described above pheromones mediate several other types of behaviour. Alarm pheromones have been found in termites and bees. The termite soldiers liberate alarm pheromones attracting (communicating alarm signals) the aggressive workers that participate in attacking the intrusive individuals. Trait pheromones secreted by insects help social integrity during migration of colonies by orienting along an invisible chemical trail that has been laid out by one or more conspecific insects. Both aerial land terrestrial trails are possible. Some species of ants and termites deploy trait pheromones in the recruitment of workers to food sources. Aggregate pheromones make it possible for both sexes to aggregate.
They are produced by members of both sexes. Pheromone-mediated aggregation helps to aggregate insects for feeding, protection, reproduction etc. A pheromone, 2-methoxy-5- ethylaphenol is produced from faeces of the migratory locust, Locusta migratoria migratorioides. The pheromone causes the young hoppers to aggregate and is also associated with the induction of morphological and physiological changes that result in the transformation of the hoppers to the migratory phase. In cockroaches also, the pheromones released from various surfaces of the body and from the faeces cause aggregation. In the protozoan Dictyostelium discoideum (amoebae, also known as cellular slime molds) the amoebae release pulses of a pheromone, which has been identified as cyclic 3'-5'AMP resulting in the aggregation.
Explain the term Blood Pressure in Technical Measurement ? Following techniques are recommended (JNC VII): 1) Patient should be seated in a chair with their backs supported an
Explain about the Microcolony DEFT? It allows determination of viable cells. Food homogenate is filtered through a DEFT membrane and then placed on the surface of appropriate c
How do mineral salts participate in osmotic regulation? Osmotic pressure depends on the number of particles dissolved in a solution and not on the nature of such particles. Min
Explain Herbicide tolerant crops in Evolutionary way Increased use of herbicide can result in increase in development of weed resistance to that herbicide either through
Q What are the major morphological features of birds? Birds are animals that present aerodynamic bodies covered with feathers, pneumatic bones, anterior limbs transformed into
Epilimnion - Summer Stratification This forms the upper layer of the lake and consists of freely- circulating warm water which is well lighted though poor in nutrients. Most o
Mechanical Valves They are made of a combination of metal alloys, pyrolite carbon and dacron. Types of Mechanical Valves Caged-ball Valve (Star-Edwards) A me
What is the immediate effects of exercise on the functions of the heart?
Oxidation of malate to oxaloacetate Oxidation of malate to oxaloacetate: Malate is oxidized to oxaloacetate by malate dehydrogenase and NAD' is required as coenzyme. Thi
Cilia and flagella are structures found in various prokaryotes as well in some eukaryotic cells. They play defense, nutrition and movement roles for the cell. In eukaryotic cells o
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd