Question

8. A mantle is found only among the: a. arthropods b. annelids c. echinoderms d. mollusks e. chordates 9. Cephalopods are the only mammals that possess: a. a mantle b. gills c. a food modified into tentacles d. "jet" propulsion e. a foot modified into tentacles and "jet" propulsion 10. Both the largest and fastest invertebrates are in which mollusk group? a. chitons b. cephalopods c. gastropods d. bivalves e. cnidarians 11. For roundworms living in the intestine of a vertebrate, the cuticle probably would serve in what a. water retention b. nutrient absorption c. protection from digestive enzymes d. excretion of metabolic wastes e. sensory detection 12. Which of the following is a disadvantage of an exoskeleton? a. it must be shed for its owner to grow b. it does not provide as efficient a muscle anchorage as an endoskeleton c. it allows for excess water loss d. it is not flexible enough to allow a full range of movement e. it is not able to absorb pigments for sufficient camouflage 13. Arthropods usually detect odors with their: a. antennae b. legs c. mouths d. noses e. eyes

          8. A mantle is found only among the:
a. arthropods
b. annelids
c. echinoderms
d. mollusks
e. chordates
9. Cephalopods are the only mammals that possess:
a. a mantle
b. gills
c. a food modified into tentacles
d. "jet" propulsion
e. a foot modified into tentacles and "jet" propulsion
10. Both the largest and fastest invertebrates are in which mollusk group?
a. chitons
b. cephalopods
c. gastropods
d. bivalves
e. cnidarians
11. For roundworms living in the intestine of a vertebrate, the cuticle probably would serve in what
a. water retention
b. nutrient absorption
c. protection from digestive enzymes
d. excretion of metabolic wastes
e. sensory detection
12. Which of the following is a disadvantage of an exoskeleton?
a. it must be shed for its owner to grow
b. it does not provide as efficient a muscle anchorage as an endoskeleton
c. it allows for excess water loss
d. it is not flexible enough to allow a full range of movement
e. it is not able to absorb pigments for sufficient camouflage
13. Arthropods usually detect odors with their:
a. antennae
b. legs
c. mouths
d. noses
e. eyes

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8. A mantle is found only among the:
a. arthropods
b. annelids
c. echinoderms
d. mollusks
e. chordates
9. Cephalopods are the only mammals that possess:
a. a mantle
b. gills
c. a food modified into tentacles
d. "jet" propulsion
e. a foot modified into tentacles and "jet" propulsion
10. Both the largest and fastest invertebrates are in which mollusk group?
a. chitons
b. cephalopods
c. gastropods
d. bivalves
e. cnidarians
11. For roundworms living in the intestine of a vertebrate, the cuticle probably would serve in what
a. water retention
b. nutrient absorption
c. protection from digestive enzymes
d. excretion of metabolic wastes
e. sensory detection
12. Which of the following is a disadvantage of an exoskeleton?
a. it must be shed for its owner to grow
b. it does not provide as efficient a muscle anchorage as an endoskeleton
c. it allows for excess water loss
d. it is not flexible enough to allow a full range of movement
e. it is not able to absorb pigments for sufficient camouflage
13. Arthropods usually detect odors with their:
a. antennae
b. legs
c. mouths
d. noses
e. eyes

Added by Mireia M.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

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Solved by Expert Marlyn Joyce

08/17/2022

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8. A mantle is found only among the: a. arthropods b. annelids c. echinoderms d. mollusks e. chordates 9. Cephalopods are the only mammals that possess: a. a mantle b. gills c. a food modified into tentacles d. "jet" propulsion e. a foot modified into tentacles and "jet" propulsion 10. Both the largest and fastest invertebrates are in which mollusk group? a. chitons b. cephalopods c. gastropods d. bivalves e. cnidarians 11. For roundworms living in the intestine of a vertebrate, the cuticle probably would serve in what a. water retention b. nutrient absorption c. protection from digestive enzymes d. excretion of metabolic wastes e. sensory detection 12. Which of the following is a disadvantage of an exoskeleton? a. it must be shed for its owner to grow b. it does not provide as efficient a muscle anchorage as an endoskeleton c. it allows for excess water loss d. it is not flexible enough to allow a full range of movement e. it is not able to absorb pigments for sufficient camouflage 13. Arthropods usually detect odors with their: a. antennae

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Transcript

00:01 Okay, so let's answer now the following questions.

00:04 So let's start with question number eight.

00:09 So in question number eight, we are asked, what is a mantle, or mantle, rather, is found in what organisms? so in this question, our answer here is mantel is found in mollusk.

00:28 So our answer here is we have the mollus.

00:36 So example of mollusks, we have squid, we have clams, we have seashells, for example, they have, or shellfish, rather, they have this mantle in their structure.

00:55 Okay, and for number nine, our answer here, cephalopods are the only.

01:02 Animals that possess what our answer here is cephalopods is the only animal that possess a foot modified into tentacles and jet proportion so there is a foot a food modified a foot modified into tentacles tentacles and jet proportion take note that cephalopods are under phyloosca, so they are mollusks.

01:55 Cephalopods are mollusk.

01:56 An example of cephalopods, we have squid, we have octopus.

02:04 So they have this modified foot known as tentacles and jet, and they have this jet propulsion.

02:11 Okay, so this is the answer.

02:14 Next for number 10, which of the following is the fastest and largest invertebrates? that are under the mollus group.

02:23 So for this question, the fastest and largest invertebrates is not the chytons, not the gastropods, not the bivalbs or the nidarians.

02:36 Our answer here is we have the cephalopods and organism or the squid, or the octopus.

02:46 For example, we have the giant squid.

02:51 The giant squid is so large and it is also fast, especially when swimming, especially also octopus.

02:59 Octopus is fast in swimming...

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