Annelids, Arthropods and Molluscs are protostomes. Give reason.

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…