Cnidaria - protozoa, Biology

Assignment Help:

Cnidaria - Protozoa

The mature medusoid jellyfishes like Aurelia are the sexual stages. Sperms and eggs produced in the dissimilar (male and female) individuals ale released in water, which then fuse to form a zygote. The latter develops into a fixed polyploids scyphistoma that undergoes various transverse fission to produce ephyras by the process called Strobilation (see page lo), a type of asexual reproduction. Thus the sexual generation of the adult jellyfish is alternated along with an asexual generation i.e., scyphistoma. You would recall the alternation of generation is quite common among hydrozoans, in which the highly branching sedentary colonies such as those of Obelia are asexual generations. They give off medusae which are sexual generations. The medusae give rise to the colonies and vice versa, alternating with one another.


Related Discussions:- Cnidaria - protozoa

How age factors affect the requirement of protein, How age factors affect t...

How age factors affect the requirement of protein? Age: Protein in excess of maintenance needs is required, when a new tissue is being fornled. Certain age periods, when growth

What is the significance of axial skeleton, What is the significance of Axi...

What is the significance of Axial skeleton? The bones which make up skeleton of the main body axis of vertebrates. It comprise the cranium, vertebral column, and rib cages, How

Mutation theory, MUTATION THEORY (Hugo de Vries 1901) - New species ...

MUTATION THEORY (Hugo de Vries 1901) - New species are not formed by continuous variations but sudden appearance of variations i.e., mutation. Mutation are heritable and per

Asexual reproduction, Asexual Reproduction Asexual reproduction is als...

Asexual Reproduction Asexual reproduction is also known agamic reproduction because there is no involvement of gametes in it. Asexual methods of reproduction are

Double vessel disease, Double Vessel Disease (DVD) :  Percutaneous interve...

Double Vessel Disease (DVD) :  Percutaneous intervention with stetting is usually advised for these patients. However if it is left main equivalent disease or when block is close

What is lymphatic network, What is Lymphatic Network? The lymphatic net...

What is Lymphatic Network? The lymphatic network consists of the lymphatic vessels, which circulate lymph throughout the body. Lymph is a liquid which carries out exchange of g

Water pollution, When toxic substances enter lakes, streams, rivers, oceans...

When toxic substances enter lakes, streams, rivers, oceans and other water bodies, they get dissolved or lie suspended in water. This causes pollution of water bodies, which degrad

What is dyslipidaemia, What is Dyslipidaemia ? The results of epidemiol...

What is Dyslipidaemia ? The results of epidemiological studies, as well as trials with angiographic or clinical endpoints, confirm the importance of various lipid fractions in

What volume of 4x protein sample buffer, What volume of 4x protein sample b...

What volume of 4x protein sample buffer do you need to add to 15 ml of a cell extract in order to load it on a gel?

Natural toxins, Some plants and animals originate food contain toxic substa...

Some plants and animals originate food contain toxic substances. Some pulses and legumes contain a number of toxic substances such as protease inhibitors, lathyrogens, and flavism

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd