Feeding on small particles, Biology

Assignment Help:

Feeding on Small Particles

Microscopic algae and bacteria can be taken in directly into the cell by the digestive vacuoles. But one of the most successful methods of feeding on small particulate matter is filter feeding or suspension feeding. Particulate matter includes detritus, living and dead plankton. Most filter feeders use ciliated surfaces to produce currents - that draw drifting food particles into the mouth.

1282_Feeding on Small Particles.png

Figure:  Sponges obtain their food by filtering seawater. Food particles pass down the collar cells or choanocytes and enter them through phagocytosis

The animal extracts the suspended food particles by means of structures that act as filters often aided by secretion of mucous which traps the food particles. In sponges, the flagella of the choanocytes, the cells that line the body cavity, create internal water currents. The body wall has numerous pores called ostia and the water is drawn in across the flagellated chamber into the body cavity. Food particles are trapped by the flagella and directed to the surface of choanocyte, which ingest the particles by phagocytosis.


Related Discussions:- Feeding on small particles

Tolerance range, what is the tolerance range of man and tillapia

what is the tolerance range of man and tillapia

Renal insufficiency, CHF complicating IE is primarily the result of valve d...

CHF complicating IE is primarily the result of valve destruction or distortion or rupture of chordae tendinae. Intracardiac fistulas, myocarditis, or coronary artery embolization m

What are the main techniques of genetic engineering, At the present level o...

At the present level of the biotechnology what are the main techniques of genetic engineering? The major techniques of genetic engineering today are: the recombinant DNA techno

What are the main human blood group systems, What are the main human blood ...

What are the main human blood group systems? In humans the major blood group systems are the ABO system, the Rh system and the MN system.

User charges, Normal 0 false false false EN-IN X-NONE...

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

Explain hypertensive response, Q. Explain Hypertensive Response? Hypert...

Q. Explain Hypertensive Response? Hypertension at rest has long been known to be a risk factor for the development of coronary artery disease (CAD). Significant elevation of B

How are ecological interactions classified, How are ecological interactions...

How are ecological interactions classified? Ecological interactions are divided as intraspecific or interspecific interactions and as harmonious or inharmonious interactions.

What are the maintenance sequences of implant, Maintenance sequences of imp...

Maintenance sequences of implant Achieving a successful result with the treatment is only half the battle won. The main challenge is maintain that result over a long period of

Senescence - effects of plant growth regulators, Senescence - Effects of Pl...

Senescence - Effects of Plant Growth Regulators on Development All five major growth regulator groups: auxins, gibberellins cytokinins, abscisic acid and ethylene can influenc

Explain submarginal curved - limited mucoperiosteal flaps, Explain Submargi...

Explain Submarginal Curved - Limited Mucoperiosteal Flaps - Also called: semilunar flap, - Curved incision in the alveolar mucosa and the attached gingival. - NO advantag

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