Concept explainers
(a)
To determine:
The major group of mollusk, in which “two hinged shells” are found.
Introduction:
The coelomate organisms, having a fully developed
(b)
To determine:
The major group of mollusk, in which “a radula” is found.
Introduction:
The coelomate organisms, having a fully developed digestive system and have three parts of the body “visceral mass”, “foot”, and “mantle” are mollusks. These animals are included in the phylum of Mollusca. The three types of mollusks are “gastropods”, “cephalopods”, and “bivalves”.
(c)
To determine:
The major group of mollusk, in which “tentacles” are found.
Introduction:
The coelomate organisms, having a fully developed digestive system and have three parts of the body “visceral mass”, “foot”, and “mantle” are mollusks. These animals are included in the phylum of Mollusca. The three types of mollusks are “gastropods”, “cephalopods”, and “bivalves”.
(d)
To determine:
The major group of mollusk, in which “some sessile members” are found.
Introduction:
The coelomate organisms, having a fully developed digestive system and have three parts of the body “visceral mass”, “foot”, and “mantle” are mollusks. These animals are included in the phylum of Mollusca. The three types of mollusks are “gastropods”, “cephalopods”, and “bivalves”.
(e)
To determine:
The major group of mollusk, in which “the best-developed brains”, are found.
Introduction:
The coelomate organisms, having a fully developed digestive system and have three parts of the body “visceral mass”, “foot”, and “mantle” are mollusks. These animals are included in the phylum of Mollusca. The three types of mollusks are “gastropods”, “cephalopods”, and “bivalves”.
(f)
To determine:
The major group of mollusk, in which “numerous eyes” are found.
Introduction:
The coelomate organisms, having a fully developed digestive system and have three parts of the body “visceral mass”, “foot”, and “mantle” are mollusks. These animals are included in the phylum of Mollusca. The three types of mollusks are “gastropods”, “cephalopods”, and “bivalves”.
Want to see the full answer?
Check out a sample textbook solutionChapter 24 Solutions
Biology
- Which of the following is not a member of the phylum Chordata? a. Cephalochordata b. Echinodermata c. Urochordata d. Vertebrataarrow_forwardMembers of Chondrichthyes differ from members of Osteichthyes by having a _______. a. jaw b. bony skeleton c. cartilaginous skeleton d. two sets of paired finsarrow_forwardCubozoans are______. a. polyps b. medusoids c. polymorphs d. spongesarrow_forward
- What would be the best anatomical feature to look for to distinguish a gastropod from a chiton? (presence of muscular foot/ presence of a radula/ production of eggs/ number of shell plates)?arrow_forwardWhat characteristic is common to the flatworms, molluscs, and annelids? a. All have bilateral symmetry. b. All are acoelomates. c. All are parazoans.d. All are vertebrates.arrow_forwardSelect all of the following that are true about cephalopods. A)They may be very large and can weigh over 1000 pounds. B)They are very intelligent and are capable of learning by observation. C)They are exclusively herbivorous. D)They have a closed circulatory system E)They lack a shell.arrow_forward
- A fishing net brings up a soft bodied animal with a coiled external shell. How can you determine whether the animal is a gastropod or a cephalopod? A) give one unique trait that would allow you to identify the organism as a member of class gastropoda. B) give one unique trait that would allow you to identify the organism as a cephalopodarrow_forwardWhich of the following statements about bilaterian animals is false? A. Many bilaterians are invertebrates but some are not. B. All bilaterians are triploblastic (have three germ layers). C. All bilaterians have bilateral symmetry. D. Most bilaterians have tissues but some do not.arrow_forward. What features do all mollusks share?arrow_forward
- Which of the following features do sponges lack that some other animals have? (a) segmented body plan (b) symmetrical body plan (c) backbone (d) all of the abovearrow_forwardCephalopods are active marine predators, and many molluscan features are modified to fulfill their niche. Explain how each molluscan feature is modified, compared to gastropod and bivalve body plans. 1) Molluscan foot 2) Excurrent Siphon 3) Shell 4) Sensory organs and brainarrow_forwardNematodes once were thought to be closely related torotifers due to the presence of a pseudocoelom but are nowconsidered more closely related to the arthropods due toa. molting. c. wings.b. jointed appendages. d. a coelom.arrow_forward
- Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage LearningConcepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College