Choose the word which is different from the rest.

The answer is A. Feathers.

Feathers are a type of integumentary structure that is found in birds. They are made of keratin, the same protein that makes up hair and nails in humans. Feathers are used for flight, insulation, and camouflage.

Tentacles are elongated, flexible appendages that are found in many different animals, including octopuses, squid, and jellyfish. Tentacles are used for sensing, grasping, and feeding.

Scales are small, flat, overlapping plates that are found on the skin of many different animals, including fish, reptiles, and birds. Scales are used for protection, camouflage, and temperature regulation.

Pseudopodia are temporary, finger-like

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