Why is the madreporite of sea cucumbers internal instead of external like other echinoderms?

Q: What type of symmetry do the Echinoderms have? Do they have this type of symmetry their entire…

A: Echinoderms or spiny skinned animals belong to the phylum Echinodermata. They are marineand…

Q: Why are echinoderms used as indicator species in marine environments?

A: Echinoderms are marine organisms that belong to the phylum Echinodermata. The name is derived from…

Q: Echinoderms have _____ symmetry as embryos and _____ symmetry as adults. a. radial; radial c.…

A: The group of eukaryotic, multicellular, and heterotrophic organisms is classified under the kingdom…

Q: Which organ system is responsible for locomotion in the sea star/echinoderms?

A: Echinoderms have the following characteristics- 1. They are triploblastic. 2. They are radially…

Q: Features of Chordates Subphylum Cephalochordata Adult Subphylum Subphylum Urochordata Vertebrata…

A: 1

Q: What symmetry is represented in echinoderms?

A: There are three types of symmetry- 1. Bilateral symmetry- means that the organism when cut…

Q: What constellation of characteristics possessed by echinoderms occurs in no other phylum?

A: Echinoderms are an extremely ancient group of creatures reaching out rear to the Cambrian time…

Q: The sponge choanoderm is derived from endoderm. O True False

A: The germ layers are ectoderm, mesoderm and endoderm. this three germ layers are responsible for the…

Q: Explain the difference between mictic and amictic eggs of rotifers. What is the adaptive value of…

A: The members of the phylum Rotifera have can range in the length from 40 micrometers to 3…

Q: Explain how Craniata are paedomorphic for some traits of Chordata larvae.

A: Hemichordates have a number of features that are common between them, chordates and echinoderms.…

Q: What structural system is unique to the phylum Echinodermata?

A: Echinoderms:              Marine invertebrate animals characterized by a hard, spiny covering or…

Q: Is there a larval stage in echinoderms?

A: The term Echinodermata was coined by Jacob klein in 1738 . Leucport in 1847 established the…

Q: Explain the Characteristics of Echinoderms ?

A: The group of eukaryotic, multicellular, and heterotrophic organisms is classified under the kingdom…

Q: What environment would you find an echinoderm?

A: Echinoderms have the following characteristics- 1. They are bilaterally symmetrical. 2. They have a…

Q: Echinoderms have _____. a. triangular symmetry b. radial symmetry c. hexagonal symmetry d.…

A: A major group of marine animals are echinoderms. They are known for their spine like skin. These…

Q: Explain why echinoderms are more closely related tochordates than invertebrates.

A: Phylum Echinodermata include marine bottom-dwellers such as sea stars, sea lilies, sea urchins,…

Q: Why are robber crabs land invertebrates?

A: Robber crab which is also known as coconut crab, scientific name Birgus latro , it is a species of…

Q: What are the basic morphological features of echinoderms?

A: The Echinodermata is a phylum in the kingdom Animalia and the members of this phylum is called…

Q: Sponges are Radially symmetrical Bilaterally symmetrical Asymmetrical Dorso- ventrally…

A: The animals can be classified into three distinct classes depending on their body symmetry:…

Q: Venom glands may be adaptations of modified ovipositors for venom injection in hymenopterans....what…

A: Answer: VENOM = It is the poisonous substance produced by many animals and insects which when…

Q: Table 1. Comparison of structure, function, and behavior of the five (5) major echinoderm classes.…

A: Echinoderms They share common ancestor with the hemichordates and chordates.  They are enterocoelus…

Q: What are shared characteristics that are found in clams? Notable cephalization O Coelomates…

A: Clam is a common name for several kinds of bivalve molluscs. The word is often applied only to those…

Q: What phylum is the closest relative of nemertines? Why?

A: Nemertines:  Nemertea, sometimes known as ribbon worms or proboscis worms, is a phylum of organisms.…

Q: What characteristics do Hemichordata share with Echinodermata, and how do the two phyla differ?

A: Introduction  Hemichordate are referred to as Half chordates, they are marine deuterostomes animals.…

Q: Identify the distinguishing characteristics of echinoderms.

A: Step 1 Kingdom Animalia or metazoan includes all animals of the two kingdom classification except…

Q: based on the picture, what is the synamorphic character of echinoderms and hemichordates?

A: A synapomorphy is a shared, derived trait shared by an ancestor and its progeny. A character, often…

Q: In planarians ampulation : What body parts are required for feeding? Do all of the planarians eat…

A: Planaria  They are free living flat worm belonging to the phylum Platyhelminhs. They have high…

Q: What kind of nervous system is present in the echinoderms?

A: Cephalization is the formation of a central nervous system in organisms.  Echinoderms do not present…

Q: What evidence suggests that ancestral echinoderms were sessile?

A: Phylum Echinoderms include organisms that are exclusively marine. The have spines that stick out…

Q: Are all ‘choanates’ also amniotes?  Are all amniotes in the group Choanata?

A: Introduction: Any animal affiliated to the subfamily Vertebrata, the most common subphylum of the…

Q: Examine this whole mount of Branchiostoma (amphioxus): label the notochord, myomeres, and nerve…

A: Hi, Thanks For Your Question.  Answer :  Branchiostoma do not have a true head, they only have a…

Q: What are some representatives of the echinoderm phylum?

A: The representatives of phylum Echinodermata are known as echinoderms. 'Echinos' means spine and…

Q: What is the system that permits movement and fixation to echinoderms?

A: These form a well defined and successful group of marine animals which live at the bottom of all…

Q: What is the mot distal part of a crinoid that is associated with feeding? A. brachige B. Pinnules C.…

A: Crinoids are marine animals belonging to the phylum Echinodermata and the class Crinoidea.

Q: r vascular system found in echinoderms is primarily involved in;

A: The water vascular system found in Echinoderms is primarily involved in; Answer: Movement

Q: The presence of a water vascular system is unique to Echinoderms. Describe using labelled diagrams…

A: Answer: Introduction: Echinoderm is the common name given to any member of the phylum Echinodermata…

Q: Give four examples of how echinoderms are important to humans

A: The animal kingdom is very large. It consists of a wide variety of animals that differ from each…

Q: Which group of echinoderms has a biradial symmetry and tube feet all over its body?

A: Tube feet are one of the little adaptable or flexible cylindrical processes which present in the…

Q: How are the symmetry and the nervous system characterized in echinoderms?

A: Echinoderms are marine invertebrates that includes bilateral animals like star fish, sea urchins,…

Q: Compare and contrast the symmetry and body shape of the different classes of echinoderms.

A: Phylum Echinodermata has five classes 1. Asteroidea (sea stars) 2. Ophiuroidea (brittle stars) 3.…

Q: Phylum Echinodermata: 1. Briefly describe the general body plan of these animals by stating: a) the…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Do echinoderms present internal or external fecundation? Is there sex division among individuals?

A: Fecundation, also known as fertilization involves the physical union of the male and female gamete…

Q: Describe the acrosomal reaction in an echinoderm like the purple sea urchin, Strongylocentrotus…

A: Echinoderms are a group of marine invertebrates that belong to the phylum Echinodermata, and has a…

Q: Describe the process of torsion in gastropods, and explain its significance.

A: The gastropods, normally known as snails and slugs, have a place with an enormous ordered class of…

Q: Compared to platyhelminthes which physiological problem have the cylindrical body of nematodes…

A: Platyhelminthes are flat worms that are unsegmented, acoelomates and have bilateral symmetry. They…

Animal Phylogeny

Cladistics is a method of biological classification where organisms are classified based on their ancestors and their relationship with them. It is defined as the concepts and methods for determining the branching patterns of evolution and evolutionary history. Some scientists, however, have preferred the term phylogenetic systematics or phylogenetic taxonomy to emphasize the reliance on a phylogeny for classification. It is the most common and accepted method for classifying organisms.