~Cephalochordata General Characters ~
• All animals are found in shallow marine water.
• ephalochordata are sedentary animals and their anterior end remains outside from the sand of bottom of sea.
• The body of animals are small sized, fish like, about cm long, divided into many segments and transparent.
• Cephalochordataswim in water after coming out from sand at night. 5-8
• Cephalochordata is an absence of head. The trunk and tail are present.
• Cephalochordata is an absence of exoskeleton. The epidernmis wi single layer is found.
• The muscles are arranged on dorso lateral side to for myötomes. region.
• The notochord is extended from rostrum to tail Hence, they are known as cephalochordates.
• The digestive tract is complete and eontains pharyngeal gill slits. many
• Cephalochordata respire through general body surface. They do not have specific respiratory organs.
• Cephalochordata have well developed and closed type of circulatory system. However, there is an absence of heart and respiratory pigment.
• dCephalochordata not have definite brain and ganglia.
• Cephalochordata are dioceous animals (male and female animals are separate).
• Cephalochordata number of gonads are arranged in segments. However, there is absence of gonoducts. more and
• Example of Cephalochordata
• Amphioxus :
• Cephalochordata is also called lancelet. They are found in temperate and tropical seashore.
• Amphioxus makes burrows in clean, shallow and recurring water and it remains buried in sand for most of the time.
• But in darkness or to tease it, it swims very rapidly by lashing movements of tail. Adult animal is cm long.
• body is elongated, flat, nonpigmented and pointed at the both ends.
• Anterior end is called as rostrum. The mouth is situated ventrally, in which less than 5 many oral cirri are found.
• General character of Cephalochordata. Subphylum Cephalochordata . Phylum Cephalochordata. Example of Cephalochordata. Class of Cephalochordata. Define Cephalochordata.,
• General character of Cephalochordata. Subphylum Cephalochordata . Phylum Cephalochordata. Example of Cephalochordata. Class of Cephalochordata. Define Cephalochordata.,
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General character of Cephalochordata.
General character of Cephalochordata.
General character of Cephalochordata.
General character of Cephalochordata.
General character of Cephalochordata.
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