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!
Secondary Egg Envelopes
These are secreted by oviducts and other accessory parts of genital organs while the egg is passing through them from ovary to the exterior.
a) In ovoviviparous sharks the egg is surrounded by a hard shell secreted by shell glands of the oviduct. The shell is drawn out as twisted horns which serve to entangle the egg among sea weeds.
b) In amphibians, the eggs are surrounded by a layer of jelly which protects the egg from adverse effects of sun rays, abrasion as well as from predators (because of its bad taste). The jelly absorbs water and swells.
c) In birds, reptiles and monotremes, the secondary envelopes include the white of egg surrounding the yolky ovum, followed by inner and outer shell membranes (which are in close contact with one another) and the outermost calcareous shell which is 'porous. The shell is elastic and compressible when the egg is laid but it hardens on exposure to atmosphere.
Which one of the following statements is correct with respect to AIDS? 1. The HIV can be transmitted through eating food together with an infected person 2. Drug addicts are
Define the properties of solutions Several properties of solutions are particularly important in food preparations. Amongst these are colligative properties, such as vapour pre
Explain about the physiology of eyelid movements. Physiology of Eyelid Movements: It is quoted that the eyelids move more than any other part of the body. The major movem
Q. After passing the epididymides through which structures do sperm cells go until exteriorization? After leaving the epididymis in the testicle sperm cells enters the vas defe
Outline the importance of buffer systems in the human body. In addition, describe the main biological buffer systems and how they function.
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
rRNA structure and synthesis assignment
During which meiosis division does ploidy reduction occur? Does ploidy reduction occur in mitosis? In the cell division by meiosis ploidy reduction occurs in meiosis II. Initia
Evolutionary Implications of Natural Regulation Many changes in abundance can be attributed to changes in extrinsic factors such as weather, disease or predation. But some cha
All the cells present in the body contain genes and an approach targeted to modulate the expression of genes is known as gene therapy. This novel approach has emerged by the end of
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