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!
Meroblastic or partial cleavage
The egg does not divide totally because divisions are restricted to only a part of the egg where as the rest of the egg remains completely uncleaved. It is of two types:
A. Discoidal meroblastic cleavage: It occurs in the heavily yoked macrolecithal and highly telolecithal eggs, as for instance in cephalopod molluscs, reptiles, birds and monotremes (egg laying mammals). The cleavage is restricted to the cytoplasmic germinal disc located at the animal pole. Even the germinal disc divides incompletely where as the entire yolk mass remains undivided.
B. Superficial meroblastic cleavage: This takes place in the centrolecithal eggs of insects. Cell divisions are restricted to the peripheral cytoplasmic layer whereas the centrally located yolky is left undivided.
OBJECTIVES : After reading surgery, you will be able to: 1 understand the fundamental of closed and open heart surgery and recent developments in off pump surgery; 2 in
Circulation of nutrients in the coastal zone Circulation of nutrients from the sea bottom to the upper surface, occurs in the coastal regions by two processes Upwelling
The main constituents of food are carbohydrates, lipids, and proteins but they are found in complex forms that cannot be directly utilized by the body. Hence, they are broken down
adaptation of kingdom animalia
Q. Which types of tissue have the greatest capacity to regenerate? Epithelial and connective tissues have the greatest capacity to regenerate. In injuries andsmall wounds, epit
Q. What are the gynoecium and the androecium? What are the other structures of flowers? Androecium is set of male reproductive structures of flowers it comprehends the stamens
Does the environment exert an influence on the phenotype? The phenotype may be altered (compared to the original situation conditioned by its genotype) by nongenetic means, ins
Frenal and Muscle Attachments: Frenal attachment at the site of implant placement has to be evaluated. A high frenal attachment may have a definite pull on the gingival surroun
What are lateral meristems? Where can they be found and which type of plant growth do they promote? Lateral, or secondary, meristems, are the cambium and the phellogen (also ca
Results: The risk of isolated aortic valve replacement is 3-4 per cent. The long term survival for 5, 10 and 15years is 75 per cent, 60 per cent and 40 per cent respectively. The
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