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Question
Identify the animal given in the picture and write features of its phylum/class.
Solution
The organism in the given picture is Amphioxus and it belongs to Phylum Chordata (Subphylum Cephalochordata).
Features of Phylum Chordata (Subphylum Cephalochordata):
- Notochord present at least in early embryonic life.
- Nerve cord is single, dorsal and non-ganglionated.
- The heart is ventral in position.
- Pharyngeal gill slits are present at least in the embryonic stage.
- The post-anal tail is present at least in the embryonic stage.
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