Characteristic features of coelom, Biology

Assignment Help:

Characteristic Features of Coelom

Sensory system consisting of eyes, photoreceptor cells, statocysts, taste buds and tactile organs.
Respiration by skin, gills or parapodia.
Body vermiform, bilaterally symmetrical with metamerism.
Chitinous setae present
Schizocoelic coelom - coelom appearing as a split or cavity within mesoderm.
Blood vascular system closed, often along with retory pigments; plasma contains
Sexes may be separate, or animals may be hermaphrodites. Cleavage spiral, with mosaic development. When present, larva is trochophores. Some animals show asexual reproduction by budding.
Presegmental prostomium and post segmental pygidium.
Nervous system contains a supraesophageal ganglion (cerebral ganglion). Circum oesophageal ring and ventral nerve cord with segmental ganglia.
Excretory system usually consisting of a pair of nephridia in each segment.
Different degrees of cephalization are shown.

Related Discussions:- Characteristic features of coelom

Define birth weight - etiological factors for obesity, Define Birth weight ...

Define Birth weight - etiological factors for obesity? It has been shown that slow growth of the foetus in utero and during infancy is followed by accelerated weight gain in ch

Contemporary interests in nutritional biochemistry, Contemporary Interests ...

Contemporary Interests in Nutritional Biochemistry As newer techniques in biochemistry have emerged from time to time, these were of immense help in the understanding of ut

Male reproductive system - semen, SEMEN - Sperms and secretion of acces...

SEMEN - Sperms and secretion of accesory glands collectively known as seminal fluid or semen. It is milky, semi-solid in nature having particular smell. pH : 7.35 - 7.5. Spe

How cells are studied, How cells are studied We learnt about the evolut...

How cells are studied We learnt about the evolution of the cell and a historical account of the growth of cell biology. In this section, you will study about the various tools

Describe u - waves, Q. Describe U - Waves? The U-wave is usually uprigh...

Q. Describe U - Waves? The U-wave is usually upright if the T is also upright and is highest at low rates. When the heart rate increases to more than 90, the U-wave is rarely v

Formation of blastopore, Formation of Blastopore The slit such as ope...

Formation of Blastopore The slit such as opening of the initial groove is the opening of the developing blastopore and its dorsal rim is termed as the dorsal lip of blastopor

Element required by higher plants, Element Required By Higher Plants T...

Element Required By Higher Plants Table shows the list of sixteen elements that fulfil the criteria of essentiality stated above, their approximate adequate concentration and

Explain uncompetitive inhibition, Uncompetitive inhibition In this typ...

Uncompetitive inhibition In this type of inhibition, the inhibitor only binds with the enzyme-substrate complex making it inactive. As a result, the product formation

Oogenesis, - Oogenesis involves the formation of haploid cells from an orig...

- Oogenesis involves the formation of haploid cells from an original diploid cell, called a primary oocyte, through meiosis. - The female ovaries contain the primary oocyte. The

Define assessment of manganese status, Define Assessment of Manganese Statu...

Define Assessment of Manganese Status? The body Mn status has not been yet established by laboratory tests. Though the normal range of serum Mn concentration is found out to b

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages