Zygotic or suspensor polyembryony, Biology

Assignment Help:

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.

2461_Zygotic or Suspensor Polyembryony.png

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.


Related Discussions:- Zygotic or suspensor polyembryony

Define poverty alleviation to control under nutrition, Define Poverty Allev...

Define Poverty Alleviation to control under nutrition? There are a number of development programmes aiming at employment assurance to the landless and other labour with a focus

Neontology, Neontology : It is the study of recently formed organisms. Neon...

Neontology : It is the study of recently formed organisms. Neontology science is the part of biology that is in contrast to paleontology. Neontology science deals with now living o

Hydrogen-ion concentration, The acidity and alkalinity (pH) of an environme...

The acidity and alkalinity (pH) of an environment has a strong influence on the activity and stability of macromolecules such as enzymes. These enzymes play an important role durin

Explain metabolic response to injury, Explain Metabolic Response to Injury?...

Explain Metabolic Response to Injury? There is an increase in the basal metabolic rate above the normal. The degree of hyper metabolism is related to the severity of the injury

What is reflexive memory, What is reflexive memory? Reflexive memory re...

What is reflexive memory? Reflexive memory relies on the cerebellum and amygdala. Compare among aerobic respiration and anaerobic respiration. Aerobic respiration happens in th

Explain first stage of the embryonic development, Q. What is the cell divis...

Q. What is the cell division during the first stage of the embryonic development called? How is this stage characterized? The cell division in the first stage of the embryonic

Can we prevent ketoacidosis, Q. Can we prevent ketoacidosis? Normally, ...

Q. Can we prevent ketoacidosis? Normally, while maintaining a good sugar control, there is a very little danger of ketoacidosis. One should test for ketones under the following

Zoology , character & classfication of phylum analys

character & classfication of phylum analys

Explain chilling temperatures - method of food preservation, Explain chilli...

Explain chilling temperatures - method of food Preservation? (a) Cellar storage temperatures (about 15° C): It is usually used for the storage of surplus foods like root crops,

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd