'Alipay' Ant Manor, September 26: Which of the following organs does existing birds not have?

php editor Xigua brings the latest news: "Alipay" Ant Manor will launch a question on September 26 to test players' understanding of the structure of birds. One of the questions is: Which organ is not found in living birds? This question tests the player's understanding of the physiological structure of birds and requires careful thinking before giving an answer. The Q&A session of Alipay Ant Manor is full of fun, allowing players to not only enjoy leisure fun in the game, but also increase their understanding of natural knowledge.

Ant Manor September 26: Which of the following organs does not exist in existing birds?

Question: Which of the following organs does not exist in living birds?

Answer: Teeth

Summary of today’s answers to Ant Manor

Answer analysis:

1. Birds eat by swallowing. When the food reaches the stomach, it is the same as before they ate it, and they can only rely on gastric juices to digest the food;

2. Birds evolved from reptiles, and reptiles generally have teeth. The ancestors of birds also had sharp teeth 116 million years ago;

3. The lack of teeth is to reduce the weight of the head, which also means that they do not need a strong mandible and corresponding muscles, further reducing the weight of the head and even the whole body.

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