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!
Types of Metamorphic Changes
The process of metamorphosis includes reactivation of the morphogenetic processes. The morphogenetic changes also the mode of causation of these changes vary in different animal groups. The degrees of changes that take place during metamorphosis depend on the degree of difference between the larva and the adult forms. For instance, in urodele amphibians (newts) and hemimetabolous insects (cockroach), larva and adult show some differences. The metamorphic changes are comparatively less and metamorphosis is said to be gradual or incomplete. Conversely, in anuran amphibians (frogs) and holometabolous insects, where differences among the larva and adult are enormous, the changes during metamorphosis are extensive and drastic.
This kind of metamorphosis is called radical or complete metamorphosis. The changes throughout metamorphosis include those of structural, physiological and biochemical nature. These are marked through disintegration and atrophy of some structures, cellular death in some tissues, morphogenesis and differentiation of certain new structures and remodeling of some another. These alterations of metamorphosis in at least some groups of animals (insects, crustaceans, amphibians) are known to be controlled by hormones that serve as the causative agents of metamorphosis.
Alternative polyadenylation sites Exact pre-mRNAs hold more than single group of signal sequences for 3' end polyadenylation and cleavage. In some cases, the area of t
#Most of the world''s flightless birds are either nocturnal and secretive (e.g. the kagu) or large, swift and well-armed (the ostrich). The exceptions are found primarily on island
Noncompetitive inhibition In this type of inhibition, the inhibitor binds at a site on the enzyme other than catalytic site. As there is no competition between the s
filter feeding mode of nutrition is observed in- a) amoeba b) euglena c)paramoecium d) all of the above
What is a population? The population is a set of individuals of the same species found in a given place in a given time.
Assume that the smallest object your visual system can detect is 100 micrometers in size and you have a microscope with a 10x ocular lens. If you have an object that is 1 nanometer
Sutures are also classified by thread diameter: Thread materials range in diameter from 1 to 10 with the higher number corresponding to the thinner, more delicate thread. In
Which term is used to describe an animal which limits its activity to periods of dim light at dawn and dusk? a) Diurnal (pron: die-ER-nal) b) Vesperal (pron: VESS-per-al)
Cardiac Veins The anterior cardiac consisting of vessels covering the anterior right ventricle, I drain into the right atrium. The great cardiac vein drains the blood form
Q. Treatment and disposal technologies for health-care waste 1. Incineration 2. Chemical disinfection 3. Wet and dry thermal treatment 4. Microwave irradiation 5. L
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: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd