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!
Q. Show the value of embryology?
The value of embryology in solving taxonomic problems can be appreciated by studying some specific cases. Amongst the classical examples cited by embryologists is the taxonomic position of the genus Paeonia. In a majority of the classical systems of angiosperm classification, this genus is considered as a member of the family Ranunculaceae. However, several botanists have been recognising several characters of Paeonia which distinguish it from other members of the family Ranuncuiaccae. These include vascular and floral anatomy, basic chromosome number as well as-the size and morphology of the chromosomes. The most significant difference bitwee3 the genus Paeonia and other members of the family Ranunculaceae concerns several embryological characters and this study was carried out independently by Russian botanists Yakovlev and Yoffe as well as by the hdian botanist Prem Murgai. The most significant observation relates to' the embryogeny in Paeonia. Unlike other angiosperms, this genus exhibits a unique type of embryogeny.
According to the Russian botanists, the zygote nucleus undergoes repeated nuclear divisions forming a coenocytic structure. Later, the nuclei lodge themselves in a peripheral layer of the -cytoplasm, and this is followed by wall formation so that the peripheral region becomes cellular. Some of the peripheral cells then function as embryo initials but only one of these develops into an adult embryo. Murgai on the other hand observed a division of the zygote into a 2 celled proembryo and the basal cell of this proembryo develops into the coenocytic structure leading to the development of the adult embryo as described by the Russian botanists.
Energy Allowance: Energy Allowance: The patient's requirement for energy varies with the physical activity and physiological condition. For instance, consider a person con
Climax Forest - Xerarch First, some xerophytic species of trees, establish in this area. They are sparsely distributed and are stunted because the conditions are still not ver
What is Panoramic X-Ray This is one of the most vital radiological techniques in planning placement of dental implants. Not only will it give you the complete picture of the pe
Explain Adverse effects of Emtricitabine Emtricitabine can cause hyperpigmentation of the palms and soles, particularly in dark-skinned patients. Because emtricitabine is also
Before we further proceed to discuss the fossil history of the humans we shall briefly look into what distinguishes humans or genus Homo from his ancestors namely the apes. These d
vasoconstriction
Lactase non-persistence is an example of a genetic trait that has been influenced by cultural factors.Domestication of animals by humans began approximately 10 000 years ago. Farm
Q. What are the colors (of the electromagnetic spectrum) absorbed by plants? What would happen to photosynthesis if the green light waves that reach a vegetable were blocked? C
Explain the types of care of teeths a) Plastic/ Nylon Scalers: These are available in a variety of shapes and are moderately effective in calculus removal. Can be Ultrasonic
Define the Primary Stain and Mordant? (i) Primary Stain - Crystal violet is the primary or first stain, which stains all the cells violet/purple. (ii) Mordant - Gram's iodin
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