Question

Q. 10. Why reflex arcs have been evolved
in animals ? ​

Answer 1

Explanation:

The pathway taken by nerve impulse in a reflex action is called the reflex arc Reflex arcs have evolved in animals because the thinking process of brain is not fast enough. However, even after complex neuron networks have come into existence, reflex are continue to be more efficient for quick responses.

Answer 2

ᴛʜᴇ ᴘᴀᴛʜᴡᴀʏ ᴛᴀᴋᴇɴ ʙʏ ɴᴇʀᴠᴇ ɪᴍᴘᴜʟsᴇ ɪɴ ᴀ ʀᴇғʟᴇx ᴀᴄᴛɪᴏɴ ɪs ᴄᴀʟʟᴇᴅ ᴛʜᴇ ʀᴇғʟᴇx ᴀʀᴄ ʀᴇғʟᴇx ᴀʀᴄs ʜᴀᴠᴇ ᴇᴠᴏʟᴠᴇᴅ ɪɴ ᴀɴɪᴍᴀʟs ʙᴇᴄᴀᴜsᴇ ᴛʜᴇ ᴛʜɪɴᴋɪɴɢ ᴘʀᴏᴄᴇss ᴏғ ʙʀᴀɪɴ ɪs ɴᴏᴛ ғᴀsᴛ ᴇɴᴏᴜɢʜ. ʜᴏᴡᴇᴠᴇʀ, ᴇᴠᴇɴ ᴀғᴛᴇʀ ᴄᴏᴍᴘʟᴇx ɴᴇᴜʀᴏɴ ɴᴇᴛᴡᴏʀᴋs ʜᴀᴠᴇ ᴄᴏᴍᴇ ɪɴᴛᴏ ᴇxɪsᴛᴇɴᴄᴇ, ʀᴇғʟᴇx ᴀʀᴇ ᴄᴏɴᴛɪɴᴜᴇ ᴛᴏ ʙᴇ ᴍᴏʀᴇ ᴇғғɪᴄɪᴇɴᴛ ғᴏʀ ǫᴜɪᴄᴋ ʀᴇsᴘᴏɴsᴇs.❤