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!
Operculum - Seed Appendages
The term operculum is applied to a plug-like structure formed in the micropylar portion of the seed by proliferation of cells at the tip of the inner integument or the nucellus. An operculum has been observed in seeds of many monocotyledonous families, such as the Commelinaceae, Musaceae, Lemnaceae and Zingiberaceae, and a few dicotyledonous families like Bignoniaceae and Nymphaeaceae.
In Lemna paucicostata, cells at the tip of the inner integument undergo a remarkable expansion after fertilization and form a dome-shaped, stopper- like operculum. Cells of the operculum are thick-walled and contain an orange-red substance. During germination of the embryo the operculum becomes detached from rest of the seed and facilitates emergence of the embryo.
MULTIPLE ALLELES (i) More than two alternative forms (alleles) of a gene in a population occupying the same locus on a chromosome or its homologue are known as multiple
What happens if platelets aren''t present in blood?
What are stomata? How do these structures participate in the plant transpiration? Stomata (singular, stoma) are small specialized passages for water and gases there in the epid
Infectious laryngotracheitis (ILT) Infectious laryngotracheities, caused by fowl Gallid Herpesvirus 1 belonging to the family Herpesviridae, is a quickly spreading acute res
Nutritional and Infections The interaction between nutrition and infection is synergistic - that is nutritional deficiency lowers resistance to infection and infection ag
It is the DNA representing, the genome of virus that has been included into the DNA of the host.
What is population growth rate? Population growth rate (PGR) is the percent variation among the number of individuals in a population at two different times. Thus the populatio
There are two distinct methods through that cells synthesize ATP. In oxidative phosphorylation which containing the electron transport chain and the generation of ATP is linke
levels of biodiversity
In continuous wave Doppler, the transducer has two Doppler crystals, one to constantly transmit and one to continuously receive. As a result of this continuous mode of tra
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