Q: which other invertebrate groups are likely to be the closest relatives of mollusks? provide…
A: INTRODUCTION Mollusca Second largest phylum of invertribrates after arthropodes.
Q: Which is more widespread, nematodes or annelids
A: Nematodes are most numerous of any phylum . About 15000 species of nematodes are present . Due to…
Q: Which of the following is most closely related to lobsters and what characteristics are significant…
A: Lobsters are a group of crustaceans which are commercially important because they are consumed as…
Q: Give the literal meaning of the name Gymnophiona. What animals are included in this amphibian order,…
A: Gymnophiona is an order species which comes under class amphibian, which in turn comes under phylum…
Q: Compare the locomotory mechanism between the gastropods and cephalopods in terms of structure.
A: Gastropods are the molluscs that includes the terrestrial, marine and the freshwater species.…
Q: The first coelomate animals are the (Nematoda/Platyhelminthes/Mollusca/Arthropoda)?
A: coelomates or eucoelomates are the organisms that possess true coelom. The true coelom is considered…
Q: Cnidocytes are found in _____. a. phylum Porifera b. phylum Nemertea c. phylum Nematoda d. phylum…
A: There is a great diversity of organisms in the Kingdom Animalia. It is further divided into several…
Q: Stalked jellyfishes" belong to which class? A. Staurozoa B. Scyphozoa C. Anthozoa D.Hydrozoa E.…
A: Stalked Jellyfishes are the sole living members of Class Staurozoa.
Q: The tapeworms (cercomeromorpha) are not considered to be segmented animals because;
A: Animals (likewise called Metazoan) are multicellular eukaryotic creatures that structure the natural…
Q: Which of the following classes of arthropod possess chelicerae? a. Chilopoda b. Crustacea c.…
A: Answer is d.) Chelicerata.
Q: Mollusks exhibit a variety of feeding methods. List at least four and discuss adaptations and…
A: Animals that lack vertebrate columns in their body, known as the invertebrates. They are mainly…
Q: Serial segmentation is a key characteristic of which of the following phyla? a. Mollusca b.…
A: The organisms of the ecosystem have significant properties. Depending upon the different features of…
Q: Choose all the phyla we looked at in this lab that have a hydrostatic skeleton. nematodes molluscs…
A: Nematodes, mollusca and annelids all the three have hydrostatic skeleton. The hydrostatic skeleton…
Q: Compare the anatomical features of roundworms andarthropods.
A: Animals placed in the kingdom "Animalia" under the traditional five-kingdom classification. They are…
Q: What characteristic is common to the flatworms, molluscs, and annelids? a. All have bilateral…
A: Organisms with a single plane of symmetry are called bilaterally symmetrical. Organisms which lack a…
Q: Flatworms, annelids, and roundworms are all______ . a. arthropods c. protostomes b. aceolomate d.…
A: Vertebrates are organisms which possess backbone. They also possess notochord. Examples includes:…
Q: Which of the following does not occur? a. radially symmetrical diploblast b. diploblastic…
A: The organisms which possess a body cavity lying between the body wall and the intestinal canal…
Q: Explain why an earthworm loses its cylindrical shapewhen it dies.
A: Zoology is the branch of biology that deals with the study of animals. The animals are classified…
Q: What is a key characteristic of all arthropods? a. Six legs c. Hydrostatic skeleton b. Pseudocoelom…
A: Arthropoda are invertebrate animals equipped with joint appendages. It is the largest phylum of…
Q: specimen:Tonicella lineata), Class Bivalvia (specimen:Mytilus (mussel)), Class…
A: 1. DICHOTOMOUS KEY to the CLASSES of Phylum MOLLUSCA : Class Polyplacophora: (specimen:Tonicella…
Q: A coelom is a body cavity completely lined with (a) epithelium (b) ectoderm (c) mesoderm (d)…
A: In human beings, there are three embryonic germ layers that are responsible for the development of…
Q: Describe the adaptations of crustaceans in aquatic habitats seen in the Crustacea
A: Crustaceans are the group of organisms under the Kingdom Animalia and phylum Arthropoda. These are…
Q: Which of the following is true about polychate worms (Feed using nematocysts/ part of the ecdysozoa/…
A: All animals are classified according to their presence of characteristics such as characters,…
Q: Which statement about protostomes is true? O They are radially symmetrical. They have a complete…
A: The group of eukaryotic organisms that are heterotrophic and multicellular is called animals. There…
Q: Why are flatworms called acoelomates
A: Flatworms belongs to the phylum Platyhelminthes. They are unsegmented, bilaterally symmetrical…
Q: Compare and contrast anatomy and ecological role of a Bivalve and a Cephalopod. Based on their…
A: Bivalve is a class of marine and freshwater molluscs. They have a flat body and include clams,…
Q: Which is not true about Cnidarians? A1. Some cnidarians go through polyp stages and medusa stages A.…
A: Cnidarians are invertebrates such as jellyfish and corals, belongs to the phylum Cnidaria. All…
Q: Cnidarians are...
A: Ans. Cnidarians are diploblastic. Option 2nd diploblastic is correct
Q: While studying the embryonic development of an organism, you determine that the blastopore of the…
A: During the embryonic development of an organism, the blastopore of the developing gastrula is…
Q: Match the organism to their body symmetry * sponges A. asymmetrical + earthworm B. bilateral *…
A: Body symmetry means that in how many equal parts an organism can be divided. If an organism is…
Q: Coelomate animals with a partitioned coelom likely possesses. a metanephridial system secretion…
A: Answer - Both proto and metanephridia
Q: Give one example of each of the four Vertebrate Classes, which are grouped under the Amniotes.
A: Sauropsids and synapsids are members of the amniote group of tetrapod animals. They are…
Q: The arthropods have a metameric body with segments organized into functional groups called
A: In this question, we have to answer a metameric body with segments organised into functional groups…
Q: In an ecdysozoan would cease if ecdysis did not occur.
A: Arthropoda (insects, chelicerata, crustaceans, and myriapods), Nematoda, and several smaller phyla…
Q: Porifera v [ Choose ] tetraneury, chambered heart stomochord, pharyngeal gills aquiferous system…
A: Porifera : Are a group of animals also known as sponges, as they have pores on their body which…
Q: Nematodes differ from annelids in that they are segmented. they are triploblastic. they have a…
A: Nematodes are found in a variety of environments, such as soil, marine, and freshwater, and various…
Q: If an animal has coelom, you also would expect it to exhibit: cephalization bilateral symmetry a…
A: The coelom is the fundamental body cavity in many animals and is situated inside the body to…
Q: Compare and contrast the ammonoid and nautiloid shells.
A: Molluscs are organisms with no vertebral column and hence, are invertebrates.
Q: Sponges exhibit indirect development.
A: Answer: Fertilization is the process takes place internally or externally between male gamete or…
Q: List two characteristics, which help us to distinguish Nematodes from Annelids.
A: Invertebrates Invertebrates are animals that do not have vertebral column. Ex- annelida, molluscs,…
Q: Compare a flatworm and a roundworm in terms of morphology.
A: Flatworms are parasitic invertebrates that belongs to the phylum Platyhelminthes while roundworms…
Q: Which phylum is characterized by animals thathave a segmented body?(A) Cnidaria(B)…
A: Segmented body is the division of body plans in some animals in which the body is divided into the…
Q: Leeches are members of the phylum _ in the clade of bilaterally symmetric animals called _…
A: Leeches are ectoparasites and do not possess any parapodia or setae. They have a peculiar connective…
Q: Triploblastic animals that lacks a through-gut and coelom
A: Triploblastic organisms are the ones that are developed from three germ layers. These layers are…
Q: Walkng in the beach you see an animal with a hard shell and many jointed appendages. Determine…
A: Arthropods These are invertebrate animals that possess exoskeleton with segmented body, and paired…
Q: Which phylum of animals shows radial symmetry and has tentacles with stinging cells? Nematoda…
A: Based on the symmetry of the body, animals can be classified into three types, namely radial…
Annelids, Arthropods and Molluscs are protostomes. Give reason.
Step by step
Solved in 2 steps
- Which is/are true of the mollusc radula a toothed structure is a synapomorphy of Mollusca is situated in the foregut present in bivalves A potential disadvantage of torsion in gastropods: consumption of feces more efficient gas exchange head protection small body sizeMollusca (clams, abalone, nudibranchs, snails, squid, octopi, etc). Unifying features include shell, mantle, radula, foot, visceral mass Which classes show a loss of the shell. How does the shell benefit an organism, how does the loss of the shell benefit other members of this phylum? Distinguish between polyplacophora, bivalva, gastropoda, and chephalopoda We see the first evolution of a true eye here. Who has it? What are chromatophores? How doe members of this group use them? What other unique defense addaptaions do we see in this group? (warning colors, 2 shells, ink)animals in which of the following classes possess adductor muscles, labial palps, and use their gills for both respiration and feeding? -Bivalvia -Cephalopoda -Polyplacophora -Anthozoa -Gastropoda
- A radula in a gastropod is a female reproductive structure A sharp, tooth like structure for killing prey a structure that aids in feeding a sense organ for detecting light Which choice correctly identifies the body plan of a Mollusc? radial symmetry bilateral symmetry asymmetry (no symmetry) A characteristic present in members of the arthropod subgroup that includes spiders, but not present in other arthropod classes would be the presence of chelicerae. an open circulatory system. an exoskeleton. a cuticle. a cephalothorax.A radula in a gastropod is a female reproductive structure A sharp, tooth like structure for killing prey a structure that aids in feeding a sense organ for detecting light Which choice correctly identifies the body plan of a Mollusc? radial symmetry bilateral symmetry asymmetry (no symmetry)1) Species belonging to the following groups typically have a trochophore larva at the beginning of their development: Ciliates Protostomians Lophotrochozoans Annelids Bilaterians
- The basic body plan of a mollusk is to have a head, foot, and visceral mass. In the case of the cephalopods, the foot; Has become part of the digestive system Has been modified into a beak Has been modified into tentacles Has been modified into part of the respiratory systemSerial repetition of the body parts is most specifically referred to as O tacky metamerization O proglottidism tagmatization somaticism tubiculousWhile sampling marine plankton in a lab, a student finds a large number of fertilized eggs. The student raises some of the eggs in the laboratory for further study and finds that the blastopore becomes the mouth. The embryo develops into a trochophore larva and eventually has a true coelom. These eggs probably belong to (gastropod/nematode/Platyhelminthes/ or gastropod and nematode)?
- Nematode worms and annelid worms share which of the following features? presence of a circulatory system molting absence of species with parasitic lifestyles presence of segmentation a digestive tract with two openings (a mouth and an anus)this is mytilus edulis. You may have noticed that many mollusks evolved to form a shell although some have a reduced shell or none at all. Which part of their body produces the shell?Using the examples from the animals you have studied in this lab, give the differences between the following phyla: Echinodermata and planaria Cnidaria and Porifera Annelida and Nematoda Cnidaria and Mollusca Echinodermata and Chordata 2. Charles a Biology student in California has found at the beach an animal he cannot name. What are some of the questions that he should ask to help determine the phylum of the animal? Based on the data that you recorded during this lab do you see a relationship between symmetry, cephalization, and number of germ layers? Can you tell what germ layer appears last? Name three characteristics or features in the phyla studied that you could tell are ancestral or primitive and three that you may call advance? Explain further?