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.
Explain Sterilization The physical process of killing microorganisms, including pathogenic and the bacteria, vegetative forms and other spores on or in an inanimate object o
Clinical Manifestation Early onset of dyspnea on exertion (DOE) which progresses to continuous dyspnea. Rhonchi, crackles , accessory muscle breathing, Increased rate of br
What are the causes of endodontic pain? Lesions in retreatment cases called post endodontic diseases. Reasons of Endo retreatment; = reasons of failure: - Signs or symptoms of
A Collective Study performed on Asian Chinese Normotensive Population to Obtain Healthy Normal Range of some Waveform Indices Background- Arterial blood pressure waveforms c
Q. What is the use of Uncoated polyvinyl chloride? Uncoated polyvinyl chloride (PVC) and polyvinylidene chloride (PVDC): PVC and PVDC are closely related plastics that are a
1. A completely new protein has been synthesized by a research lab. You are inadvertently exposed to it and have an allergic response. What type of antibody initiates this respons
Results : In critical pulmonary stenosis in infancy, surgical mortality is 6 per cent. For children and adults with isolated pulmonary valve stenosis, the mortality approaches 0
What are the respective functions of phospholipids, proteins and carbohydrates of the cell membrane? Ans) Membrane phospholipids have structural function they produce the bilipi
Question 1 Write a short note on the following 1 Class polychaeta
From the above reading you must have understood how Dental implants have come into existence. Dental Implants are the future in dentistry and are becoming more and more widely used
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