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.
how is water lost from respiratory surface
Antimicrobial Prophylaxis - Controversial The need for prophylaxis in breast surgery, herniorraphy and other "clean" surgical procedures has been controversial. Medical Letter
What is pedigree analysis . How to solve the complicated questions of pedigree . How to identify wheather it is dominant or reccessive its genotype
What are the physiological changes during pregnancy
In most axons, myelin sheath is interrupted at intervals of about 1 millimeter or more. These interruptions are known as: a) Collaterals b) Nodes of Ranvier (pron: ron-vee-ay)
Advantages (1) Liquid and gaseous fuels can be manufactured from solid fuels. (2) Relatively cheap and easily available. (3) These are easy to transport. (4) A
Q. What is Electrocardiogarm? Poor R-wave progression, in precordial leads, or q-waves in anterior leads. Intraventricular conduction defects, esqecially LBBB are common. There
What is the concept of universality of the genetic code? What are the exceptions to this universality? The genetic code is universal because the rules of protein codification b
difference between optic nerve and auditory nerve
Factors that affects Oxygen Dissociation Curves - Temperature At higher temperature haemoglobin gives up oxygen more readily and the dissociation curve shifts to the right. Th
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