Define class – arachnida, Biology

Define Class – Arachnida?

The class Arachnida (Arachnida = spider) has terrestrial and few aquatic animals. It
includes spider, scorpions and mites.

1. Prosoma bears. six pair of appendages: one pair of clielicerae, one pair of pedipalpi and four pairs of walking legs.
2. Abdomen is generally devoid of appendages.
3. Respiratory organs are tracheae, book lungs and book gills.
4. Excretion is performed by malpighian tubules and coxal glands.
5. Sexes are separate but sexual dimorphism is not conspicuous.

So, you have refreshed your background knowledge of1.he characters of subphylum Chelicerata and class Arachnida. Let us now study individuals examples under the class Arachnida.

Posted Date: 6/14/2013 5:30:41 AM | Location : United States







Related Discussions:- Define class – arachnida, Assignment Help, Ask Question on Define class – arachnida, Get Answer, Expert's Help, Define class – arachnida Discussions

Write discussion on Define class – arachnida
Your posts are moderated
Related Questions
????? # 100 ??????????? #Minimum ?????? ?????

Q. What is the constitution of the cartilaginous matrix? The cartilaginous matrix is made of generally collagen type II, collagen fibers, and of proteoglycans, proteins associa

Factors that affects Oxygen Dissociation Curves Oxygen dissociation curve for a sample of blood is affected by several factors. The most important of them are: Te

Regeneration Leading To Asexual Reproduction Regeneration is described as the replacement of the lost parts of the body of an organism. This capacity is present in approximat

What  is  the  goal  of  risk assessment? The goal of risk assessment is to provide risk managers, who might be, for example, government regulatory officials, industry health a


Phenoxyethanol is dangerous and can be absorbed through the skin - official sites for toxicity data, though, show little toxicity in man and some toxicity (irritation) with high do

ENDOPLASMIC RETICULUM Bulk of the cytoplasmic  compartment of a cell is occupied by complex , continuous  channel  system  in the form a network  of closed membrane bound and

What functions performed by Vitamin and Mineral for athletes? Vitamins and minerals perform the same essential functions for athletes and non-athletes alike. However, owing t

Vitamin D (Calciferol - vitamin D2) The main forms are Vitamin D2 (ergocalciferol-plant origin) and vitamin D3 (cholecalciferol-animal origin). Vitamin D2 forms colourless, aci