Question

Draw diagrams to explain the regeneration that takes place in each of the body parts of Planaria when its body is out into pieces. Name any other organism in which a similar process can be observed.

Answer 1

ncert pg no 131 example :

hydra

Answer 2

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ᴘʟᴀɴᴀʀɪᴀ ɪs ᴀ ᴛʏᴘᴇ ᴏғ ғʟᴀᴛᴡᴏʀᴍ. ɪᴛ ʜᴀs ᴛʜᴇ ᴀᴍᴀᴢɪɴɢ ᴄᴀᴘᴀᴄɪᴛʏ ᴛᴏ ʀᴇɢᴇɴᴇʀᴀᴛᴇ ɪᴛ's ʟᴏsᴛ ʙᴏᴅʏ ᴘᴀʀᴛ. ᴡʜᴇɴ ᴛʜᴇ ғʟᴀᴛᴡᴏʀᴍ ɪs ᴄᴜᴛ ʜᴏʀɪᴢᴏɴᴛᴀʟʟʏ, sᴇᴘᴀʀᴀᴛɪɴɢ ᴛʜᴇʜᴇᴀᴅ ғʀᴏᴍ ᴛʜᴇ ᴛᴀɪʟ, ᴛʜᴇ ᴛᴀɪʟ ᴡɪʟʟ ʀᴇɢᴇɴᴇʀᴀᴛᴇ ᴛʜᴇ ʟᴏsᴛ ʜᴇᴀᴅ ᴀɴᴅ ᴛʜᴇ ʜᴇᴀᴅ ᴡɪʟʟ ʀᴇɢᴇɴᴇʀᴀᴛᴇ ᴛʜᴇ ʟᴏsᴛ ᴛᴀɪʟ. ᴛʜɪs ᴘʀᴏᴄᴇss ɪs ᴋɴᴏᴡɴ ᴀs ʀᴇɢᴇɴᴇʀᴀᴛɪᴏɴ. ᴛʜᴇ ᴅɪᴀɢʀᴀᴍ ɪʟʟᴜsᴛʀᴀᴛɪɴɢ ᴛʜᴇ ᴘʀᴏᴄᴇss ᴏғ ʀᴇɢᴇɴᴇʀᴀᴛɪᴏɴ ɪɴ ᴘʟᴀɴᴀʀɪᴀ ɪs ɢɪᴠᴇɴ ᴀʙᴏᴠᴇ. ʀᴇɢᴇɴᴇʀᴀᴛɪᴏɴ ɪs ᴏɴᴇ ᴏғ ᴛʜᴇ ᴍᴇᴛʜᴏᴅs ᴏғ ᴀsᴇxᴜᴀʟ ʀᴇᴘʀᴏᴅᴜᴄᴛɪᴏɴ, ᴡʜɪᴄʜ ᴄᴀɴ ʙᴇ, ᴏʙsᴇʀᴠᴇᴅ ɪɴ ʜʏᴅʀᴀ ᴀʟsᴏ.

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