Question

What are the respiratory structures of Limulus and Palamnaeus respectively?

Answer 1

 The respiratory structures of Limulus are book- gills, and in Palamnaeus are book – lungs

Answer 2

Answer:

The respiratory structures of Limulus are gills, and in Palamnaeus are book lungs.

Explanation:

• The Limulus, which is made up of membrane folds arranged like book leaves, contains book gills. They aid in respiration and are found externally linked to abdominal appendages.
• Hence The respiratory system of Limulus (king crab), a member of the category Xiphosura, is a set of book gills.
• Many arachnids, including scorpions and spiders, have book lungs, a type of respiratory organ utilized for atmospheric gas exchange. For the purpose of respiration, each of these organs is connected to the environment by a tiny opening inside an open, air-filled atrium in the ventral abdomen.
• Modern land-dwelling vertebrates' lungs are not linked to book lungs. Their name encapsulates their organization and goal. They resemble a "folded" book due to the way that air pockets and tissues filled with hemolymph alternate within them. 

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