Insects
It has 1 pair of antenna and 1 pair of antennae, people get confused and think it has 2 pair of antenna.
yes
yes
Antennas =aerial .Antennae as pair, as on a ant- both plural
Lobster, Water beetles
Elephants have such pair of teeth.
You are describing insects.All insects have 6 legs, one pair of antennas and three body sections.Some examples are:AntsBeetlesWasps
To replace the antenna on a 2010 Tacoma, first, unscrew the old antenna by turning it counterclockwise from its base. If it’s stuck, you may need to use a pair of pliers for extra grip. Once removed, take the new antenna and screw it in clockwise until it’s secure. Make sure the connection is tight to ensure optimal reception.
elephant
Crustaceans have two pairs of antenne, which can be found on the first two segments of the head. These antenna are often used as sensory units, but can also be used for things such as swimming.
DNA and RNA
elephant