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.
Endoplasmic reticulum (ER) is the network of membranous tubules in the cytoplasm of a cell; involved in production of the phospholipids, proteins, and the other functions. Rough E
vasoconstriction
Q. How do bones grow? Bones form and develop through a process known as ossification. There are two types of ossification: endochondral ossification and intramembranous ossific
What is firing rate of carotid artery baroreceptors At 1:00 AM, person X's blood pressure is equal to the blood pressure set point. At 1:01 AM, there is a decrease in the firi
Each of the following are true of antimicrobial therapeutic drugs except A. Non-toxic to host B. Easily broken down by host C. Easily administered D. Limited capacity to elicit
1,352,000
Hybrid sterility can be regarded as yet another form of interspecific sterility. The offspring of the interspecific crosses are mainly sterile. Geological studies have shown that t
What are the Luria's methods and theories Adhering to our theory that the Luria Nebraska bears little resemblance to Luria's methods and theories, there seems little point in i
what is biology
Define Transverse section of body of ascaris lumbricoides? The transverse sections of male and female A, lumbricoides exhibit some differences based on their sex. T.S. of Fema
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