Question

Define nematocyst, polyp, medusa, mesoglda and planula

Answer 1

nematocyst : a specialized cell in the tentacles of a jellyfish or other coelenterate, containing a barbed or venomous coiled thread that can be projected in self-defence or to capture prey.

Answer 2

$\huge\blue{\mid{\fbox{\tt{Aɴsᴡᴇʀ}}\mid}}$

➽ ɴᴇᴍᴀᴛᴏᴄʏsᴛs

ɪᴛ ɪs sᴛɪɴɢɪɴɢ ᴏʀɢᴀɴ ᴏғ ᴄᴏᴇʟᴇɴᴛᴇʀᴀᴛᴇs. ɪᴛ ɪs ᴘʀᴏᴅᴜᴄᴇᴅ ɪɴsɪᴅᴇ ᴀ sᴛɪɴɪɴɢ ᴄᴇʟʟ ᴄᴀʟʟᴇᴅ ɴᴇᴍᴀᴛᴏʙʟᴀsᴛ ᴏʀ ᴄɴɪᴅᴏʙʟᴀsᴛ ᴡʜɪᴄʜ ᴄᴏᴍᴘʀɪsᴇs ʜʏᴘɴᴏᴛᴏxɪᴄ ғʟᴜɪᴅ ᴀɴᴅ ᴀ ʟᴏɴɢ ᴄᴏɪʟᴇᴅ ᴛᴜʙᴇ ғᴏʀ ɪɴᴊᴇᴄᴛɪɴɢ ᴛʜᴇ ғʟᴜɪᴅ ɪɴᴛᴏ ᴘʀᴇʏ ᴏʀ ᴘʀᴇᴅᴀᴛᴏʀ.ɪᴛ ɪs ᴜsᴇᴅ ᴀs ᴀɴ ᴏʀɢᴀɴ ᴏғ ᴏғғᴇɴsᴇ ᴀɴᴅ ᴅᴇғᴇɴᴄᴇ.

➽ ᴘᴏʟʏᴘ

ɪᴛ ɪs ғʀᴇᴇ ʟɪᴠɪɴɢ sᴇssɪʟᴇ ᴏʀ ᴍᴏʙɪʟᴇ ᴢᴏᴏɪᴅ ᴏʀ ɪɴᴅɪᴠɪᴅᴜᴀʟ ᴏғ ᴀ sɪᴍᴘʟᴇ ᴏʀ ᴄᴏʟᴏɴɪᴀʟ ᴄᴏᴇʟᴇɴᴛᴇʀᴀᴛᴇ. ɪᴛ ɪs ᴄʏʟɪɴᴅʀɪᴄᴀʟ ɪɴ ᴏᴜᴛʟɪɴᴇ ᴡɪᴛʜ ᴀ ᴛᴇʀᴍɪɴᴀʟ ᴍᴏᴜᴛʜ sᴜʀʀᴏᴜɴᴅᴇᴅ ʙʏ ᴀ ʀɪɴɢ ᴏғ ᴛᴇɴᴛᴀᴄʟᴇs, ᴇ.ɢ., ʜᴛᴅʀᴀ,ᴄᴏʀᴀʟ,ᴘʜʏsᴀʟɪᴀ.

➽ ᴍᴇᴅᴜsᴀ

ɪᴛ ɪs ʙᴇʟʟ-ʟɪᴋᴇ ᴏʀ ᴜᴍʙʀᴇʟʟᴀ-sʜᴀᴘᴇᴅ ғʀᴇᴇ ғʟᴏᴀᴛɪɴɢ ᴏʀ sᴡɪᴍᴍɪɴɢ ɪɴᴅɪᴠɪᴅᴜᴀʟ ᴏғ ᴄᴏᴇʟᴇɴᴛᴇʀᴛᴇs.

➽ ᴘʟᴀɴᴜʟᴀ

ᴛʜɪs ɪs ғʀᴇᴇ sᴡᴇᴇᴍɪɴɢ ʏᴏᴜɴɢ ᴏᴠᴏɪᴅ ᴄɪʟɪᴀᴛᴇᴅ ʟᴀʀᴠᴀ ᴏғ ᴄᴏᴇʟᴇɴᴛᴇʀᴀᴛᴇs. ɪᴛ ɢɪᴠᴇs ʀɪsᴇ ᴛᴏ ᴛʜᴇ ᴀᴅᴜʟᴛ ɪɴᴅɪᴠɪᴅᴜᴀʟ.

➽ ᴍᴇsᴏɢʟᴇᴀ

ɪᴛ ɪs ᴀ ɴᴏɴ-ᴄᴇʟʟᴜʟᴀʀ ɢᴇʟᴀᴛɪɴᴏᴜs ᴍɪᴅᴅʟᴇ ʟᴀʏᴇʀ ғᴏᴜɴᴅ ʙᴇᴛᴡᴇᴇɴ ᴇᴄᴛᴏᴅᴇʀᴍ ᴀɴᴅ ᴇɴᴅᴏᴅᴇʀᴍ ᴀs ɪɴ ᴄᴏᴇʟᴇɴᴛᴇʀᴀᴛᴇs.