What is class crinoidea, Biology

Assignment Help:

What is Class Crinoidea?

This Class includes the sea lilies and the feather stars. What makes them different from the other Echinoderms is the placement of their mouth and anus, which are both located on their upper body surface. They can have many arms (50 to 200) that are extend upward and outward. These arms bear tube feet, which function in filter feeding. One type of crinoid remains attached to the substrate with a stalk, and the other type can either creep along the bottom, or swim with their feathery arms.

 


Related Discussions:- What is class crinoidea

Define the calcium toxicity, Define the Calcium Toxicity? Elevated bloo...

Define the Calcium Toxicity? Elevated blood calcium can occur in association with high parathyroid hormone, hyper- or hypothyroid conditions, bone metastasis, vitamin D toxicit

Define role of leptin in controlling gene expression, Define role of Leptin...

Define role of Leptin in controlling gene expression? Leptin is a protein product (containing 167 amino acids) of the ob gene expressed exclusively in the adipose tissue. This

How are parasites classified, Concerning the number of hosts how are parasi...

Concerning the number of hosts how are parasites classified? Parasites that need only one host are known as monoxenous parasites. Parasites that need more than one host for th

Pullorum disease (bacillary white diarrhea), P u l l orum disease (baci...

P u l l orum disease (bacillary white diarrhea) This disease is caused by poultry-adapted strain of Salmonella genus- Salmonella Pullorum and considered an important hatc

Estrous cycle - reproduction, Normal 0 false false false ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Gel shift assay, Gel shift assay is a technique by which one can determine...

Gel shift assay is a technique by which one can determine whether a particular protein preparation contains factors which bind to the specific DNA fragment. At times when a radiol

Are environmental phenotypical changes, Are environmental phenotypical chan...

Are environmental phenotypical changes transmitted to the offspring? Changes caused on phenotypes by the environment are not transmitted to the offspring (unless their primary

Explain the role of dietitian''s in feeding dilemmas, Explain the role of d...

Explain the role of dietitian's in feeding dilemmas Usually, the dietitian's role in  feeding dilemmas is seen as secondary and the physician's role  is the  focus. In reality,

Why is cannibalism an inharmonious ecological interaction, Q. Why is cannib...

Q. Why is cannibalism an inharmonious intraspecific ecological interaction? In the cannibalism an individual eats other of the same species (occurs in some arachnids and insect

How will this increase survival, Why would we evolve so that when we are st...

Why would we evolve so that when we are stressed our immune system is suppressed? How would this increase survival?

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