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.
Hybridization is the reaction by which pairing of the complementary strands of nucleic acid happens. DNA is usually double-stranded, and when these strands are separated form each
Penicillin, discovered by the Scottish doctor Alexander Fleming, in 1928, is a drug that inhibits enzymes essential for the synthesis of peptidoglycans, a constituent of the bacter
Structural Function - Essential Elements The elements nitrogen, phosphorus and sulphur absorbed from the soil are essential components of amino acids and nucleotides. The othe
Explain the Altered Glucose Metabolism - Metabolic Response to Injury? Following injury, hypoglycemia commonly occurs and is related to the severity of the stress. In the ebb p
Question 1 Write a short note on the following- Transfection Synthetic seeds Transgenic crops Agrometerology Question 2 Describe any 5 screening techniques use
Q. What functions regulates by hypothalamus? HYPOTHALAMUS - Main visceral control center of the body (yet small in size). Central to virtually all homeostatic control . Th
Class Gastropoda Body asymmetrical, depicts torsion or its effects; shell coiled in most, well developed head with radula, large flat foot, gills one or two or with pulmonary
NON-STARCH POLYSACCHARIDES A polysaccharide often termed as complex carbohydrate. Besides starch, a mixture of substances called non starch polysaccharide (NSP), also constitut
Q. What is the digestive enzyme that acts within the stomach? Which type of food does it digest? What are the cells that produce that enzyme? The digestive enzyme that acts in
A pp l i c a tion s of transgenic animals Current applications of gene transfer in farm animals include the improvement of product quality and quantity, disease resistan
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