Cnidaria and platyhelminthes - larval forms, Biology

Assignment Help:

Cnidaria and Platyhelminthes - Larval forms

Cnidaria

The common larval stage that is found in cnidarians is the planula which forms following gastrulation. The planula is elongated and radially symmetrical along with anterior and posterior ends. The surface is covered by ciliated cells. A mouth may be present, sometimes at the posterior end of the larva and the larva attaches by its anterior end. The planula might settle down to form a polyploids scyphistoma that ultimately farms the medusa. In several hydrozoans the planula forms the actinula larva that transforms into the medusa.

Platyhelminthes

Development in parasitic platyhelminths is usually complicated with several free swimming to parasitic larval forms. The progression is from miracidium to sporocyst to redia and cercaria.


Related Discussions:- Cnidaria and platyhelminthes - larval forms

Carrier protein in a plasma membrane, What is a characteristic feature of a...

What is a characteristic feature of a carrier protein in a plasma membrane? Carrier proteins are globular proteins which are particular it their action and therefore regulate t

Aerobic cellular respiration during muscle exercise, Q. What happens when t...

Q. What happens when the oxygen supply is inadequate to maintain aerobic cellular respiration during muscle exercise? If oxygen from myoglobin or hemoglobin is not enough for t

Considerations for congestive cardiac failure, Q. Considerations for conges...

Q. Considerations for congestive cardiac failure? - Subjects with congestive cardiac failure often tolerate small frequent meals better than larger infrequent meals as these a

Explain transfer of culture from one liquid media to another, Explain Trans...

Explain Transfer of Culture from One Liquid Media to another Liquid Media? 1. Inoculating loop is to be held in the right hand. It is sterilized by incineration in the inner bl

Consequences of shifting the chemical equilibrium, Q. What are the conseque...

Q. What are the consequences of shifting the chemical equilibrium of the formation of bicarbonate from carbon dioxide and water towards the increase of product (bicarbonate) format

Describe ps with vsd in tetralogy of fallot''s, Describe PS with VSD in Tet...

Describe PS with VSD in Tetralogy of Fallot's ? This group is also known as Tetralogy of Fallot's physiology. The classic example is Fallot's tetralogy characterized by: (1) Se

Telementoring, TELEMENTORING Telementoring is used by a nursing teache...

TELEMENTORING Telementoring is used by a nursing teacher providing training/advice? to another nurse consultant at a remote site. The Internet has made teleconsultation and t

Common disease of cattle & buffaloes, COMMON DISEASE OF CATTLE & BUFFALOES ...

COMMON DISEASE OF CATTLE & BUFFALOES - 1 .      Anthrax - Its symptoms are high temp, painless & warmthless swellings on different body parts. Bloody discharge from na

How can the formation of sperm cells from germ cells, Indicating the name a...

Indicating the name and respective ploidy of each involved cell how can the formation of sperm cells from germ cells be described? The formation of sperm cells, or spermatogene

Concepts of epidemic disease and endemic disease, Q. What is the difference...

Q. What is the difference between the concepts of epidemic disease and endemic disease? The Endemic diseases are those that often affect people of a given place, many or few in

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