Question

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Notochord is persistant in osteichthyes throughout the life or not ? Answer in detail .

(in Chondrichthyes it is persistant throughout the life )​

Answer 1

Answer:

Notochord is persistent in Chondrichthyes throughout their life because they are chordates. Notochord becomes a part of the vertebral column, it is replaced with the cartilaginous vertebral column. ... Osteichthyes have a backbone so they don't have a notochord.

Answer 2

Qᴜᴇsᴛɪᴏɴ:-

Nᴏᴛᴏᴄʜᴏʀᴅ ɪs ᴘᴇʀsɪsᴛᴀɴᴛ ɪɴ ᴏsᴛᴇɪᴄʜᴛʜʏᴇs ᴛʜʀᴏᴜɢʜᴏᴜᴛ ᴛʜᴇ ʟɪғᴇ ᴏʀ ɴᴏᴛ ? Aɴsᴡᴇʀ ɪɴ ᴅᴇᴛᴀɪʟ .

Aɴsᴡᴇʀ :-

ʏᴇs, Nᴏᴛᴏᴄʜᴏʀᴅ ɪs ᴘᴇʀsɪsᴛᴀɴᴛ ɪɴ ᴏsᴛᴇɪᴄʜᴛʜʏᴇs ᴛʜʀᴏᴜɢʜᴏᴜᴛ ᴛʜᴇ ʟɪғᴇ

Nᴏᴛᴏᴄʜᴏʀᴅ ɪs ᴘᴇʀsɪsᴛᴇɴᴛ ɪɴ Cʜᴏɴᴅʀɪᴄʜᴛʜʏᴇs ᴛʜʀᴏᴜɢʜᴏᴜᴛ ᴛʜᴇɪʀ ʟɪғᴇ ʙᴇᴄᴀᴜsᴇ ᴛʜᴇʏ ᴀʀᴇ ᴄʜᴏʀᴅᴀᴛᴇs. Nᴏᴛᴏᴄʜᴏʀᴅ ʙᴇᴄᴏᴍᴇs ᴀ ᴘᴀʀᴛ ᴏғ ᴛʜᴇ ᴠᴇʀᴛᴇʙʀᴀʟ ᴄᴏʟᴜᴍɴ, ɪᴛ ɪs ʀᴇᴘʟᴀᴄᴇᴅ ᴡɪᴛʜ ᴛʜᴇ ᴄᴀʀᴛɪʟᴀɢɪɴᴏᴜs ᴠᴇʀᴛᴇʙʀᴀʟ ᴄᴏʟᴜᴍɴ. Osᴛᴇɪᴄʜᴛʜʏᴇs ʜᴀᴠᴇ ᴀ ʙᴀᴄᴋʙᴏɴᴇ sᴏ ᴛʜᴇʏ ᴅᴏɴ'ᴛ ʜᴀᴠᴇ ᴀ ɴᴏᴛᴏᴄʜᴏʀᴅ.