- These have long bodies with short legs, rounded ears, and a thick dark brown coat with a bushy tail.
- They have short ear tufts, less than one inch; the ruffs of hair on the side of the head give the appearance of sideburns.
- Melanin-containing substance produced by cephalopods and used as a defense mechanism.
- Where is the majority of an octopus's sensory receptors located in the body?
- Their trademark white tail, when erected, flashes a danger signal to othersThey have keen hearing, made possible by large ears that can rotate toward suspicious sounds. They have wide-set eyes, enabling them to focus on subtle movements while maintaining an excellent sense of depth perception.
- Ammonites were once successful cephalopods that had a conical shell. Which cephalopod is the closest related to these ancestors?
- Muscles found in bivalves which help to close the shell
- The very well-developed system found in Class Cephalopoda
- The external structure that distinguishes the nautilus from other cephalopods
- Minor mollusk class which contains the tusk shell
- Type of circulatory system found in all mollusks EXCEPT cephalopods
- Which of the molluscan classes is the largest and most diverse?
- In the open circulatory system of most mollusks, blood (hemolymph) is found where?
- Which is the most complex Mollusca class?
- A terrestrial mollusk which lacks a shell would belong to which of the following classes
- The structure which secretes the shell.
- "Toothed tongue" found in many mollusks and is used for scraping food
- In cephalopods, which funnel-like structure helps to propel the animal by rapidly expelling water
- The siphon, found in bivalves, through which waste is filtered OUT
- Region of the mollusk body which contains most internal organs