Anti predator adaptations exhibited by holuthuroid echinoderms include: Group of answer choices Pearl fish symbionts Cuvierian tubules evisceration spine-shaped ossicles

Q: Explain the importance of the presence of symmetry (radial and biradial) and presence of true…

A: Radial symmetry is a type of symmetry of body in which the body can be divided into a no. of equall…

Q: These differ from the other classes of sponges in that their cells are syncytial (multinucleate and…

A: Sponges are comes under the group called Porifera. The presence of pores on their body is a special…

Q: Describe how the features and diversity of echinoderms illustrate the unity of life, the diversity…

A: Echinoderms are marine organisms that inhabit the sea bottom. These organisms have spiny skin and…

Q: Cartilaginous axial skeleton without paired fins and scales in adults are features of a.Petromyzon…

A: Petromyzon

Q: The difference between the nerve cord and the notochord is that the nerve cord is used _________ and…

A: Chordates are the animals which show deuterostomic development. Chordates can be further divided…

Q: The haemal system (BVS) of echinoderms functions in part to transfer nutrients. Group of answer…

A: Hemal system present in echinoderms like starfish etc.

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: 42.Ammonites are the dominant form of cephalopod in the Jurassic Select one : True False

A: Ammonoids are a group of extinct marine mollusc animals in the subclass Ammonoidea of the class…

Q: Protoceratops how did they defend itself from predators? They hornless Dino and very small. So what…

A: Protoceratops can be referred to as herbivorous dinosaur that possessed four limbs and was an…

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

A: The madreporite  is made up of calcium carbonate and is covered in pores, looks grooved like some…

Q: Which of the ff. has a repugnatorial gland and coils into a ball when disturbed? A. Diplopod B.…

A: Various species under the arthropoda phylum are classified under Myriapoda. These possess multiple…

Q: Ammonites are the dominant form of cephalopod in the Jurassic Select one : True False

A: Ammonites are the mollusc found in marine environment. They belong to the class Cephalopoda and…

Q: what morphological features are present retained by both descendants of marbled salamander and…

A: Evolution is descent with modification. All organisms, somewhere during the course of evolution,…

Q: What are the ecological roles of hexapods and myriapods? Cite some examples of ecologically…

A: Introduction :- Ecology is the study of interaction among the living organisms and with their…

Q: Developmental patterns between protostomes and deuterostomes Developmental Pattern Protostomes…

A: The coelomates can be described as organisms that contain hollow space surrounded by the other…

Q: Which is/are true of hemichordates and echinoderms: A. Dorsal hollow nerve chord (collar chord) B.…

A: Presence of notochord and dorsal tubular hollow nerve cord is the main characteristics of chordate.…

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: Describe how the features and diversity of echinoderms illustrate the unity of life, the diversity…

A: Echinoderms are the members of phylum Echinodermata. It represents a major group that contains…

Q: Identify the major morphological structures of the sea star,an echinoderm.

A: The echinoderms belong to the phylum Echinodermata. This phylum contains 7000 different species.…

Q: Describe the endoskeleton and other adaptations seen in echinoderms.

A: Endoskeleton: An endoskeleton is a skeleton that found and develops within the interior of the body…

Q: Synapomorphies that unite anurans, caecilians, and salamandars and distinguish them from other…

A: Characters that are essential for the survival of individuals among organisms are often seen in…

Q: Which group of echinoderms usually posses pentameric antimeres but some species may have more? A.…

A: Echinodermate's term was coined by J. Klein. These are exclusively marine organisms falling in the…

Q: Which of the following correctly describes the cleavage pattern in reptiles, birds, and fish?…

A: Cleavage is the process of cell division in the developing embryo following fertilisation in…

Q: Explain how all echinoderms show five-sided radial symmetry when they look so different. How does a…

A: All Echinoderms possess five-part radial symmetry around a central disc. They all possess a very…

Q: Which statement best describes the symmetry of brachiopods compared to bivalves?     Both…

A: Brachiopods are organisms belonging to Phylum Brachiopoda and  bivalves belong to Phylum Mollusca,…

Q: The formation of the neural plate is induced by the ….? Group of answer choices a. notochord b.…

A: The neural plate that has formed as a thickened plate from the ectoderm, which is induced by the…

Q: In amniotes the space around the auditory ossicles in the middle ear cavity is filled with _______.…

A: The collection of vertebrates that lays their eggs on the land instead of water, or have their fetus…

Q: a desert millipede is an invertebrate, explain the mechanism of their protective structure. provide…

A: Answer: Introduction: Millipedes are type of arthropods which are containing two pairs of connected…

Q: What is the best evidence that Monotremes are a transitional taxon between reptiles and other…

A: Monotremes contain only five species, they are the platypus and four species of echidna. They are…

Q: A radula in a gastropod is     a female reproductive structure     A sharp, tooth like structure…

A: Step 1 Gastropods are commonly known as snails and slugs, belonging to a large taxonomic class of…

Q: How do we know that echinoderms were derived from an ancestor with bilateral symmetry?

A: Echinoderms got this name from Greek word echinos means spiny and dermos  means skin. Phylum…

Q: Describe the general characteristics of mollusks. Describe the general characteristics of annelids.…

A: The main characteristics of Invertebrates are they lack backbone. Invertebrates are various types…

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: In an ancestral chordate like the lancelets the Pharyngeal slits function as whereas in humans the…

A: Pharyngeal slits Pharyngeal slits are a third chrodate feature, these are openings between the…

Q: What phylum is a ray in? Group of answer choices Chondrichthyes Echinodermata Osteichthyes Reptilia…

A: The ray or stingray is a cartilaginous fish that has cartilaginous endoskeleton structure. They are…

Q: How are the dorsal and ventral surfaces differentiated in a preserved, adult earthworm? The dorsal…

A: The earthworm is the nocturnal crawling organism that belongs to phylum Annelida. The earthworm has…

Q: a japanese spider crab is an invertebrate, explain the mechanism of their protective structure.…

A: The Japanese spider crab is a type of marine crab that can be found in Japan's oceans. It is the…

Q: “Fishapod” (or stem tetrapod) traits include everything except: Neck   Differentiated limb bones…

A: Tiktaalik roseae or Fishapod is considered to be the intermediate fossil between the fish and the…

Q: a japanese spider crab is an invertebrate, explain the mechanism of their protective structure.…

A: Invertebrates

Q: Which of the following statements is correct for all amniotes?   A. They have internal…

A: They include reptiles, birds and mammals. They have three membranes amnion, chorion and allantois…

Q: Which is/are true of hemichordates and echinoderms: A. Dorsal hollow nerve chord (collar chord) B.…

A: Hi, Thanks For Your Question.  Answer : Correct Option Is E Explanation : Hemichordata Is A Phylum…

Q: In a tabulated form, Compare and contrast an Acanthocephalan and a Rotifer. Provide 5 point of…

A: Rotifers are the organisms of one of the phylum in the animal kingdom. Acanthocephalans are also the…

Q: Brachiopods periodically cease to feed because predators may pass overhead , causing the shell to…

A: Brachiopods are marine organisms with hardshell covering both upper and lower body parts.…

Q: The larger eye sockets in the skulls of Acanthostega and Ichthyostega suggest that they were ______.…

A: The group of eukaryotic organisms that are heterotrophic and multicellular is called animals. There…

Q: Identify and elaborate or briefly define the special features (or unique organ/s) of each of the…

A: Echinoderms Special features/unique organs Echinoids          (Sea urchins) Special type of…

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: What does the image say about the bones in the fins of fish (on the left side) when compared to the…

A: Tetrapods evolved from a finned organism that lived in the water.  The common ancestor of all those…

Q: What would be present in Spongebob's poriferan skeleton? Specify the chemical composition as well as…

A: The SpongeBobs poriferan Skeletal  structure  are containing spicules and spongin fibres. Skeleton…

Q: Which one of the following arthropods has biramous appendages?     scorpion     mite…

A: An arthropod is an invertebrate animal having an exoskeleton, a segmented body, and paired jointed…

Q: Draw and describe the different types of egg as to the concentration of yolk they contain. Give…

A: Almost all the female animals lay eggs of various species, such as birds, reptiles, amphibians, a…

Evolutionary adaptations

Evolutionary adaptation is the process through which organisms adapt or adjust to their surroundings to increase the chances of survival, mating, and reproduction. An organism's behavior, physiology, and structure are adjusted or changed to make it more suited to its environment.