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!
Zygotic or Suspensor Polyembryony
Cleavage of the apical cells of the globular or filamentous proembryo produced by the zygote may result in two or more embryos in a seed. This mode of polyembryony is also common among the orchids. Figure shows a group of cells produced from the zygote in Eulophia epidendraea which have developed into three distinct proembryos. In Figure an embryo is seen budding from a globular proembryo. In Zygophyllum fabago and in several members of the Acanthaceae buds or new embryos arise from the uniseriate suspensor of the young proembryo. The multiple embryos that arise from proembryonal or suspensor cells are diploid.
Figure: Zygotic or Suspensor polyembryony. A. Zygote has produced a pup of cells three of which have divided to form independent embryos. B. Budding of an embryo from a globular proembryo C. Proembryo with embryonal bud arising from uniseriate suspensor.
Q. What is the crossing over? And In which period of meiosis does this event occur? Crossing over is the eventual exchange of chromosomal fragments among homologous chromosomes
General Protocol for Media Preparation A general protocol for media preparation is as follows: 1. Prepare stock solutions one day before the medium is to be made. 2. Wei
List and briefly describe the mechanisms that prevent acid-base imbalances from appearing in the body. In addition, indicate where each mechanism functions most significantly.
What are sarcomeres? Sarcomeres are the contractile units of the muscle tissue formed of alternating actin blocks (thin filaments) and myosin blocks (thick filaments). Various
Locomotion Continuous formation of new pseudopodia keeps amoeba in constant locomotion .This is called amoeboid movement .It occurs in many other protozoans , in amoebo
What are the Biotolerant materials Biotolerant materials, are characterized by a thin fibrous tissue interface. The fibrous tissue layer develops as a result of the chemical pr
Non-Conventional Feed Resources There are many non-traditional or non-conventional materials which are available in abundance and can form potential source of feedstuffs for f
Describe the theory of Darwin's? Most scientists today accept the theory that living organisms have evolved according to the concept that was first proposed by Charles Darwin i
Ecosystems are so varied in form and structure that whatever has a distinct community of its own, can be called an ecosystem eg. A crop field, grass land, barks etc. all the ecosys
Kangroo Rat Kangroo rat Dipodornys merriami, a native of South-West America is a classical example of how small mammals survive in desert. It exhibits all the osmoregulatoryad
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