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tfracciscoramon
20.02.2020 •
Biology
What structure would you expect to find in every type of mollusk (that is, gastropods, cephalopods, and bivalves)?
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Ответ:
The options
a. hinge
b. tentacles
c. mantle
d. single-lens eyes
e. valve
The CORRECT ANSWER IS c.
c. mantle
Explanation:
Phylum: Mollusca (Mollusks)
Class: Polyplacophora (Chitons)
Class: Gastropoda (snails)
Class: Bivalvia (Clams)
Class: Cephalopoda (Nautilus, Squid, Octopus)
All mollusks possesses a visceral mass, a mantle, and a foot. The visceral mass houses the digestive, excretory, and reproductive organs. The mantle acts as a covering. It may produce a shell. The foot is muscular and is used for movement, griping, and/or food hunting.
Mantle, can also be termed the pallium, plural pallia, or palliums, in biology. It as a soft covering (often toughened by calcified plates, of barnacles),
produced from the body wall, of brachiopods and mollusks.
It secretes the shell in organism that make use of shells. In bivalves, it is links edge may be joined at the edge to form siphons for directing water into and out of the mantle cavity.
Ответ:
denoting substitution at diametrically opposite carbon atoms in a benzene ring, e.g., in 1, 4 positions
Explanation: