The foot is located on the head. Which of the following is NOT a mollusk? crawling along on a single muscular foot. [ ] Let's get to know them a bit better in the following lines. B) no scales. Some of the characteristics are: 1. In a tide pool, a student encounters an organism with a hard outer covering that contains much calcium carbonate, an open circulatory system, and gills. Click to see full answer. c. The exoskeleton cannot grow as the animal body inside it grows. The following families of organisms are all examples of arthropods: Insects such as ants, dragonflies, and bees. answer choices cuttlefish squid octopus Molluscs are soft-bodied invertebrates with these defining characteristics: specialized tissue known as the mantle, a feeding structure made up of a band of - the answers to ihomeworkhelpers.com Characteristics: Cephalopods are mollusks, where the foot has developed into a set of arms or tentacles. They are also hav …. d. The exoskeleton attracts predators. PRACTICE: The sponges have all of the following characteristics except: a. highly specialized cells b. simple tissues c. a gel-like matrix d. cell recognition e. complex multicellularity. Why are cephalopods considered advanced mollusks? Question : 11) Which of the following a characteristic of round fish? 11) Which of the following is a characteristic of round fish? This organism is most likely a(n) _____. Score 1. This laboratory exercise covers the following animals. a) Arthropods have an open circulatory system b) Arthropods have well-developed sensory organs c) Arthropod bodies are completely covered by cuticle d) Terrestrial arthropods have internal structures specialized for gas . They have a muscular casing called a mantle which contains and protects their organs. C) They produce an embryo that undergoes development in stages. Hii,Thanks for your question ANSWER : Step 1 Introduction The deuterostomes include the echinoderms and the chordates. Mantle enables the mollusk to move. Cephalopods are the most intelligent, most mobile, and the largest of all molluscs. All mollusks have a visceral mass, a mantle, and a foot. Selected Answer: postanal tail Answers: scales jaws vertebrae fourchambered heart postanal tail. They can produce pearls. Among the invertebrates, cephalopods possess the largest brains. Two groups of cephalopods exist today: The Nautiloidea with a few species of the pearly nautilus, and the Coleoidea, containing the squids, cuttlefishes, octopods and vampire squids, which is . E They can live in water or on land. User: Which of the following is a characteristic of cephalopods? All species have 8 arms and 2 retractile tentacles that they . Symmetry 6. Tapeworms are highly specialized worms that make their living as endoparasites. The main extant group in the d …. Cephalopods have been among the dominant large predators in the ocean at various times in geological history. . Cephalopods are the member of class Cephalopoda of the molluscan group such as squid. Hence, option B is the correct answer. All of these statements describe the phylum Cnidaria. B) distinct body plans dependent upon the class of the animal C) diploblastic D) cnidocytes. These three animals pull their shells closed by contracting powerful muscles near the hinge. D) Cnidarians are herbivores and can be destructive grazers on seaweeds. The Cephalopoda is an ancient and very successful group of the Mollusca. An "arthropod" is an invertebrate animal that has an exoskeleton, a segmented body, and jointed appendages. Snails, slugs, and nudibranchs (a slug-like saltwater animal) are all examples of gastropods. They show high adaptability, capable of using tools, and are quick at learning. Pigment cells of cephalopods are called ( ). 1. a gastrovascular cavity 2. a polyp stage 3. a medusa stage 4. cnidocytes 5. a pseudocoelom A) 1 and 4 B) 2 and 3 C) 2, 3, and 4 D) 1, 2, 3, and 4 E) all five of these D Which of the following is true of members of the phylum Cnidaria? Myriapods (a term which means "many feet") such as centipedes and milipedes. They are bilaterally symmetrical. cuttlefish. It is a very energy consuming process. E.g. Most gastropods have simple eye-spots at the tip. Arachnids such as spiders and scorpions. Hope it helped, BioTeacher101 The bodies of its members are radially symmetrical and show no cephalization. Mollusca Examples. chitons, gastropods and cephalopods. nautilus. They're made up of a body, a head and a foot. It is the minimum price per kWh at which electricity must be sold in order to break even over the lifetime of a power-generating project. 2. A theoretical . Expert Answer ANS 1 ) The correct answer for this question is - c) Open circulatory system Explanation - Cnidaria also called coelentrate have mesoglea, gastrovascular cavity, nerve net and epitheliomuscular cell but it not contain any circulatory system . answer choices . Answer: A gastropod is actually a type of animal that belongs to a class called Gastropoda. (1 point) It is the maximum price per kWh at which electricity must be sold in order to break even over the lifetime of a power-generating project. Discover the definition and characteristics of mollusks, and explore the three main types: gastropods, bivalves, and cephalopods. Mollusks are soft-bodied invertebrates with bilateral symmetry and usually one or two shells. Cephalopods are famous for their eyes. 8. emdjay23. Body is divisible into three regions - head, a visceral mass, and ventral foot. The development is direct. Fisherman can do it more quickly than fish market workers. Most of the mollusks live in water but some live on land. b. opening and closing of the shell. Cephalopods are a phylum of mollusks that include squids, octopi, the chambered nautilus, and cuttlefish. The Cephalopod class includes octopuses, squid, cuttlefish, and nautilus: intelligent creatures who live very briefly. Decapoda is an order of crustaceans within the class Malacostraca. Which of the following is a characteristic of levelized cost of energy (LCOE)? Question. Cuttlefish are cephalopod mollusks whose main characteristic is that they have a hard inner shell. All cephalopods have the same basic anatomy. Biology questions and answers. See Page 1. Cuttlefish characteristics. The common characteristics of annelids are as follows: Annelids have a long cylindrical body; The body is segmented internally as well as externally; Bilaterally symmetrical; Vermiform; They are cephalopods; They have a true body cavity; Annelids have a gut with mouth and anus; The body is divided into three sections. Score 1 User: What is the main reason that the guts of a fish are often removed on the boat?A. Using what you know about the three major classes of mollusks, complete the chart below by checking the correct column or columns for each characteristic. The shell is either external, internal, or not present at all. Therefore, from the above discussion it has been clear that Sea squirt is not a cephalopod. 18) Which of the following are characteristics of thephylumCnidaria? Arachnids such as spiders and scorpions. C) Cnidarians have three true tissue layers. This process is defined by a concept known as the B.Induced fit model 1.In the context of vision, the blind spot is D. an area of the retina where there are no rods or cones. Characteristics of Mollusks. Some cephalopods migrate following their food sources, a characteristic that may well have allowed them to survive for millions of years. Question. So, the correct answer is option C. E) All of the answer choices describe characteristics of animals. We review their content and use your feedback to keep the quality high. B) The more stationary cnidarian body form, which is cylindrical with a ring of tentacles, is the medusa. 12) Which of the following is a characteristic of flat fish? It is the minimum price per kWh at which electricity must be sold in order to break even over the lifetime of a power-generating project. View the full answer. answer choices cuttlefish squid octopus nautilus They are prosomium, truck . C) swim in vertical position. They have separate sexes. In a tide pool, a student encounters an organism with a hard outer covering that contains much calcium carbonate, an open circulatory system, and gills. SURVEY . %CODE1% Javascript not enabled Name: Annelids and Mollusks Quiz Multiple Choice Identify the choice that best completes the statement or answers the question. Their arms will either have cirri . Question 14 30 seconds Q. 30 seconds . Updated: 11/23/2021 Create an account Cephalopods are mollusks, where the foot has developed into a set of arms or tentacles. Biology questions and answers. User: Removing a mollusk from its shell is called. chitons, gastropods and cephalopods. They're made up of a body, a head and a foot having a muscular case called a mantle that protects their organs. The success of the cephalopods as predators is supported by the presence of a. beaklike jaws b. a complex eye c. a large and complex brain d. tentacles e. all of the above Lahal the structures 68. Characteristic Features of Phylum Mollusca. The radula is involved in a. jet propulsion. Note: Cephalopods are a diverse . The life cycles of many of its members alternate between a feeding polyp and a reproductive medusa. The two last ones do not belong to the Cephalopoda class, and also do not have the characteristics to be considered one. Log in for more information. Surprisingly, given their ability to change color, all octopuses [21] and most cephalopods [22] [23] are considered to be color blind. The open these shells they have to relax their muscles. They're made up of a body, a head and a foot. They are mostly found in the marine environment. All cephalopods have tentacles, most are carnivores, and they are all . The mantle is a covering. As mentioned before, the cuttlefish is a cephalopod mollusk that belongs to the genus Sepiida. Cephalopoda. Among molluscs, cephalopods are unique in having a closed circulatory system e. Compared to other schizocoelomates, the arthropods have a greatly reduced coelom Habitat 2. Myriapods (a term which means "many feet") such as centipedes and milipedes. Cuttlefish are cephalopod mollusks whose main characteristic is that they have a hard inner shell. All cephalopods have the same basic anatomy. octopus. The following families of organisms are all examples of arthropods: Insects such as ants, dragonflies, and bees. Which of the following are characteristics of the phylum Cnidaria? - is a characteristic of cephalopods. b. Transcribed image text: Which of the following organisms would you . 3. Answer: 1 on a question Which characteristic is unique to cephalopods? c. eating. (1 point) It is the maximum price per kWh at which electricity must be sold in order to break even over the lifetime of a power-generating project. clapping their shells together. These "brainy" invertebrates have evolved suckered tentacles . squid. Weegy: Cephalopods are mollusks, where the foot has developed into a set of arms or tentacles. - is a characteristic of cephalopods. It consists of squids, cuttlefishes, octopuses, and the chambered nautiluses. chitons, gastropods and cephalopods bivalves, gastropods and cephalopods bivalves. Some cephalopods migrate following their food sources, a characteristic that may well have allowed them to survive for millions of years. Some migrate vertically every day, spending most of the day in the dark depths hiding . They are triploblastic, which three layers. New answers. Question 2 30 seconds Q. Best Answer. PRACTICE: Gastropods, cephalopods, and bivalves all share a. a mantle b. tentacles c. a radula d. an external shell A radularian B arachnid C cephalopod D gastropod. Copy. Which of these cephalopods has an external shell? A) a gastrovascular cavity developing from a coelom. . Their organs are in a fluid-filled cavity; the word mollusks in Latin means "soft". 21) ______ A) The digestive and circulatory compartment of cnidarians is called the gastrovascular cavity. Which of these cephalopods has an external shell? Any energy transformation involves the loss of some energy as A.Heat 9.As an enzyme fits into a substrate at the active site, it undergoes a slight change to fit into the substrate. Let's get to know them a bit better in the following lines. answer choices Feeding Locomotion Respiration Camouflage Question 13 30 seconds Q. Cephalopods move by answer choices using jet propulsion or creeping waving their tentacles back and forth in water clapping their shells together. Correct option is A) The phylum Mollusca is typically divided into 9 or 10 taxonomic classes of which two are entirely extinct. Living cephalopods are members of one of the following two infraclasses: Decapodiformes are all ten-armed and include cuttlefish (order Sepiida) and squids (Teuthida). This answer has been confirmed as correct and helpful. Arthropods are a . The options we have are squids, jellyfish and cuttlefish. 65. 21. A) swim in horizontal position. A B C D . They have a muscular casing called a mantle which contains and protects their organs. Question 14 Which of the following is a characteristic of all chordates at some point during their life cycle? Most cephalopod eyes, like human eyes, contain an iris, pupil, lens, and in some cases, a cornea. a. phylum Platyhelminthes—hydra b. phylum Nematoda—planaria c. phylum Mollusca—octopus d. phylum Annelida—roundworm answer choices . Cephalopods are mollusks, where the foot has developed into a set of arms or tentacles. Answer: 1 on a question Which characteristic is unique to cephalopods? Some migrate vertically every day, spending most of the day in the dark depths hiding . They show organ system grade of organisation. 13 Questions Show answers Question 1 30 seconds Q. Cephalopods move by answer choices using jet propulsion waving their tentacles back and forth. The mollusks that have a hinged, two-part shell joined by strong muscles are called bivalves. A: pinacocytes B: odontophores C: chromatophores D: erythrocytes E . D) both eyes on one side. - the answers to ihomeworkhelpers.com The visceral mass contains the digestive, excretory, and reproductive organs. . Which of the following is a characteristic of all animals? hence i … View the full answer They have a closed circulatory system. In some cephalopods the eyes are as complex as the human eye, and the eye of the giant squid is enormous. Body is covered by a mantle and shell. Transcribed image text: Cephalopods have several unique characteristics that set them apart from other mollusks. An "arthropod" is an invertebrate animal that has an exoskeleton, a segmented body, and jointed appendages. Size 5. Comparing Mollusks Chart KEY. They can produce pearls. B) Usually undergo sexual reproduction. You should learn this classification scheme and be able to classify the animals into these categories. They are marine animals and characterised by bilateral body symmetry, a prominent head, and a set of arms or tentacles modified from the primitive molluscan foot. Reading: Mollusks. . The gastropod can have either two or four sensory tentacles. We acknowledge that gastropods and cephalopods are phylogenetically distant classes but there are similarities in digestive tract morphology and innervation, which support the mechanisms we propose for vomiting or regurgitation in cephalopods; (2) a rationale for the requirement to vomit or regurgitate is presented based upon voiding . The following points highlight the twenty-one general characteristics of invertebrates. Their arms will either have cirri . Question 15 The vertebrate spinal cord develops from the embryonic _____. Rating. Multiple choice: 4. A characteristic structure found in many mollusks is the radula. Which of the following is not a general characteristic of arthropods? Some species also have tentacles that are modified of their feet. They all have arms -- at least eight of them -- that are attached directly to their heads, but only some species also have tentacles. Weegy: Cephalopods are mollusks, where the foot has developed into a set of arms or tentacles. D) The adult form is diploid. The animal must consume large amounts of food to support the growth of the exoskeleton. Which of the following is a correct pairing? . Clams, Oysters, and Scallops are bivalve mollusks and are a familiar food source. Numerical Strength 3. For instance, external shells only applies to cephalopods if you consider the . e. All of the above e. mode of digestion. Deuterostomes are also known as enterocoelomates because their coelom develops through eneterocoely. How is the evolution of fish thought to have contributed to the evolution of cephalopods? Which of the following is a characteristic that you would not expect to see in this transitional fossil? C Cephalopoda. Hi This is all i could get. The chart below can be somewhat flexible, depending on the characteristic. They have a radula. There are more than 110,000 species that have been identified. The Presence or Absence of Germ Layers 8. They can live in water or on land. 1.1 Cephalopoda: Decapodiformes and Octopodiformes The group referred to as cephalopods, class Cephalopoda (Cuvier, 1797), belongs to the phylum Mollusca (Linnaeus, 1758). a) Arthropods have an open circulatory system b) Arthropods have well-developed sensory organs c) Arthropod bodies are completely covered by cuticle d) Terrestrial arthropods have internal structures specialized for gas exchange e) Most arthropod sensory organs are concentrated at the posterior end 5. . B) Both are cephalopods C) Both lack a coelom D) Both are mammals E) Both are chordates A) Both are bilaterally symmetrical The first vertebrates with jaws were the cartilaginous fishes The vast majority of all animals are invertebrates Sea anemones, hydras, corals, and jellies are all classified as cnidarians Recommended textbook explanations A cephalopod is a member of molluscan class Cephalopoda. Added 1/5/2020 8:47:07 PM. Log in for more information. A) : 1887218. Another common feature is their ability to squirt ink when threatened. The earliest known cephalopods are small, shelled fossils from the Upper Cambrian rocks of northeast China that are 500 million years old. Introduction. Cephalopods have more intelligence (larger brain) and exhibit complexity (complex nervous system). Q. Which of these cephalopods has an external shell? . Which of the following is a function of the mantle in many mollusks? E)all of the above Answer E. E ) all of the above. Mantle covers the internal organs, may also create shell. Following are a few examples of the animals belonging to phylum Mollusca: Pila (Apple snail) Limax (Slug) Unio (Freshwater mussel) 10. Which of the following is a characteristic of levelized cost of energy (LCOE)? a. barnacle b. clam c. octopus d. slug e. snail 66. Tags: Question 3 . Cephalopods are organisms tha belong to the class Cephalopoda, which is composed by squids, octopus and nautilus. They have a closed circulatory system. Cuttlefish characteristics As mentioned before, the cuttlefish is a cephalopod mollusk that belongs to the genus Sepiida. 12. Squid, octopuses, cuttlefish, the chambered nautilus, and their relatives display remarkable diversity in size and lifestyle with adaptations for predation, locomotion, disguise, and communication. The organism could potentially be a crab, a shrimp, a barnacle, or a bivalve. The cephalopod foot has evolved into a series of arms, which are primarily used for handling prey. The organism could potentially be a crab, a shrimp, a barnacle, or a bivalve. An active marine predator is found possessing these characteristics: a series of tentacles (modified from the foot), a highly developed nervous system, and elaborate image-forming eyes. chitons, gastropods and cephalopods bivalves, gastropods and cephalopods bivalves. The Cephalopod class includes octopuses, squid, cuttlefish, and nautilus: intelligent creatures who live very briefly. A: Derived from neuroectoderm B: Contains a lot of melanin particles C: Phagocytic function D: Storages vitamin A E: Can synthesize visual pigment . Grades of Organization 7. They all have arms -- at least eight of them -- that are attached directly to their heads, but only some species also have tentacles. Shape 4. The foot is located on the head. The exoskeleton prevents the animal from moving rapidly. They have a radula. Which of the following is not the characteristic of pigment epithelial cells. These classes are Aplacophora, Bivalvia, Cephalopoda, Polyplacophora, Gastropoda, Monoplacophora, Pleistomollusca, Rostroconchia, Scaphopoda. d. reproduction eating 2. Cephalopods always have been marine, never fresh-water or land . View the full answer. The most highly evolved class of the phylum Mollusca. Mantle helps the . Answer: A. Cephalopods nervous system is the most complex of any invertebrate nervous system. 29) Which of the following animals moves via muscular hydrostat a) Gastropods and Cephalopods b) Gastropods and Chitons c) Gastropods and Bivalves d) Gastropods only 30) Which of the following is a true statement for the molluscan shell? - is a characteristic of cephalopods. >Excretory system - Cephalopods possess a single pair of large nephridia which produce nitrogenous waste and excrete it out from the body. - is a characteristic of cephalopods. Unlike the other c …. A) They ingest food that is digested in a central cavity. View the full answer. Octopus, Spirula. Coleoid cephalopods (octopus, squid, cuttlefish) have a single photoreceptor type and lack the ability to determine color by comparing detected photon intensity across multiple spectral channels. The body is soft and unsegmented.
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