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!
Reproductive Organs
In several metazoans, gonads are well-defined. Testes and ovaries take up dissimilar shapes and anatomical dispositions. In cases of certain hermaphrodites similar reproductive tissue from one part may generate sperms and from another part the ova. In sponges, gonads are poorly defined. Sperms and eggs arise from choanocytes and archaeocytes that are transformed into spermatogonia. Sperms leave the sponge by water currents. They enter choanocytes of other sponges that transport the sperms to the egg. Thus fertilisation takes place in situ by the intervention of choanocytes. In cnidarians, testes and ovaries are distinct. In a number of species of Hydra both tests and ovaries may be formed in the same individual (monoecious, bisexual) or in dissimilar individuals but in most species they are found in different individuals (dioecious unisexual). A single ovum produced in the ovary is fertilized in situ by the sperms generally coming from a different hydra. In colonial cnidarians the gonads are formed on the medusae from interstitial cells below the radial canals. They are formed in the epidermis of sub-umbrella. Fertilization is generally external, in water.
Describe the Planes of Muscles The planes of superior and inferior recti in primary position form an angle of about 23 0 with the Y-axis. Therefore, the axis of rotation of th
What is Obesity in biochemical or physiological risk ? Obesity results from a complex interaction of genetic predisposition and environmental factors operating throughout an in
I need help to study for my test and exam
Q. Describe the process of coronary atherosclerosis? Atherosclerosis is an intimal disease of arteries ranging in size from the aorta to the epicardial coronary artery i.e. cha
Q. Show the process of Construction of Keys? Keys are constructed using contrasting characters. The possible names in the key are divided into smaller and smaller groups. Each
Q. What are imago and nymph? Nymphs are larvae of hemimetabolic insects (like grasshoppers). They are very similar to the adult insect although smaller, In holometabolic insect
RECAPITUL A TIO N THEORY / BIOGENETIC LAW It was proposed by Muller & Haeckel on the basis of Baer's law. According to it, in the development of animal phylum characters
Advise on Rest, recreation, sleep The patient should take enough rest and get good sleep. Restrict the visitors so that the patient can get enough rest. Not to strain th
Q. How does facilitated diffusion present resemblance with enzymatic chemical reactions? One of the main examples of facilitated transport is the entry of glucose from the bloo
Q. What are the factors which influence the spoilage of meat? Can you list a few? Ans. Sure enough, you should be able to enumerate these having learnt about them earlier
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