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.
Difference between Ribosome and plant virus - RIBOSOME (RNA + Protein) PLANT VIRUS (RNA + Protein) 1. Does not mul
Tail - Structure of the Sperm The tail or flagellum is the longest part of the sperm. By its movement it causes the sperm to swim with the head forward. It consists of a thin
Dietetic Foods for diabetes: With advances in food technology, foods for special use by diabetics are now available in the global market, they are emerging in India also. These
What are likely to be the limiting factors in a population of (a) green plants, (b) birds? (a) In green plants the limiting factors are likely to be light, water, minerals, te
What is the meaning of Chelicifore? These feeding mouthparts are found on most, pycnogonads. Though the proboscis is the main feeding structure in these animals when chelicifor
Q. Define Bioinert materials? Bioinert materials are chemically inert in the body and exhibit minimal chemical interaction with adjacent tissue such as titanium and alumina (Al
Calf diptheria The disease is a serious one usually affecting calves up to 2 years of age. The lesions are confined to larynx and pharynx, and consist of well-defined areas of nec
Q. Show the Anatomical Evidence? Anatomy is the study of the structure, organisation and development of cells and tissues of plants and animals. For over a century taxonomists
Q. How sex occurs in bacteria? Occurrence of sex in bacteria was first described by Edward Tatum and Joshua Lederberg in 1946 (Nature, volume 158, page 558) who were studying m
Characteristic of Callus The most important characteristic of callus from a functional view point is that abnormal growth has the potential to develop normal roots, shoots and
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