Echinoderms and chordates have

Echinoderms and chordates have
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Echinoderms and chordates have A. Pseudocoel B. Shizocoelom C. Enterocoelom D. Hemocoel
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Echinoderms are closely related to chordates due to the following characters .

Description : Echinoderms are closely related to chordates due to the following characters .

Last Answer : Echinoderms are closely related to chordates due to the following characters . A. Tube- within - ... have mesodermal endoskeleton . D. All of these

What is the embryonic characteristic that evolutionarily makes echinoderms proximal to chordates?

Description : What is the embryonic characteristic that evolutionarily makes echinoderms proximal to chordates?

Last Answer : Echinoderms and chordates are deuterostomes, i.e., in their embryonic development the blastopore turns into the anus. All other animals with complete digestive system are protostomes, i. ... digestive tube that appears in the embryonic development. Phylum Echinodermata - Image Diversity: blastopore

Which of the following traits is not characteristics of echinoderms ?

Description : Which of the following traits is not characteristics of echinoderms ?

Last Answer : Which of the following traits is not characteristics of echinoderms ? A. Water vascular system B. Trochophore larva C. Tube feet D. Enterocoel

Which of the following statement is incorrect for echinoderms ?

Description : Which of the following statement is incorrect for echinoderms ?

Last Answer : Which of the following statement is incorrect for echinoderms ? A. The most distinctive feature ... D. They have well- developed circulatory system.

Are echinoderms endothermic?

Description : Are echinoderms endothermic?

Last Answer : Yes

Not all animals have a circulatory system. Poriferans, cnidarians, platyhelminthes and nematodes (in these there are the pseudocoelom fluid but no vessels) are avascular animals. Echinoderms do not have true circulatory systems either.

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Evolutionarily protochordates may be intermediate animals between invertebrates and vertebrates. Imagine a scientist is testing the hypothesis that vertebrates evolved from echinoderms. Having as research object a newly found protochordate species, what is an example of a discovery that would weaken the hypothesis? What is an example of a discovery that would strengthen it?

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Last Answer : Hypothesis to be tested: Vertebrates evolved from echinoderms. Testing material: A newly found protochordate species (i.e., a vertebrate forerunner). Example of weakening observation (that ... shows how science works, beginning with the placement of hypothesis and further observational testing.)

Echinoderm identity card. How are echinoderms characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, digestive system, respiratory system, circulatory system, excretory system, nervous system and types of reproduction?

Description : Echinoderm identity card. How are echinoderms characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, digestive system, respiratory system, circulatory system, excretory system, nervous system and types of reproduction?

Last Answer : Examples of representing beings: sea cucumber, sea urchin, starfishes. Basic morphology: calcareous endoskeleton with spines, ambulacral system. Type of symmetry: secondary radial. Germ layers and ... cephalization. Types of reproduction: sexual, with larval stage. Phylum Chordata - Study Here

Is there a larval stage in echinoderms?

Description : Is there a larval stage in echinoderms?

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

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

Last Answer : The fecundation in echinoderms is external, gametes are liberated in water where fecundation occurs. The majority of echinoderms are dioecious with male and female individuals.

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

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

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Do echinoderms have an excretory system? How is excretion done in these animals?

Description : Do echinoderms have an excretory system? How is excretion done in these animals?

Last Answer : Echinoderms do not have an excretory system. Their excretions are eliminated by diffusion.

Do echinoderms have respiratory and circulatory systems?

Description : Do echinoderms have respiratory and circulatory systems?

Last Answer : In echinoderms there are not well-defined respiratory (with the exception of the holothurian group) and circulatory systems. The ambulacral hydrovascular system plays the function of these systems.

What is the type of digestive system of echinoderms?

Description : What is the type of digestive system of echinoderms?

Last Answer : Echinoderms present a complete digestive system, with mouth and anus.

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

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

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How can the endoskeleton of echinoderms be characterized in comparison to analogous structures present in vertebrates, arthropods and molluscs?

Description : How can the endoskeleton of echinoderms be characterized in comparison to analogous structures present in vertebrates, arthropods and molluscs?

Last Answer : The echinoderm skeleton is internal, i.e., it is an endoskeleton. It is made of calcium carbonate (calcareous). Vertebrates also have internal skeleton made of bones and cartilages. Arthropods ... of chitin, a chitinous exoskeleton. Some molluscs present a calcareous shell that works as exoskeleton.

What are the basic morphological features of echinoderms?

Description : What are the basic morphological features of echinoderms?

Last Answer : Echinoderms, as the name indicates (echino = spiny, derma = skin), are creatures with spines originated from an endoskeleton. Their endoskeleton is made of calcareous plaques that besides spines ... have pentaradial symmetry; the radial symmetry in these animals is secondary, present only in adults.

Under which environments do echinoderms live?

Description : Under which environments do echinoderms live?

Last Answer : Echinoderms are marine animals, they live in salt water.

The canal system is a characteristic feature of (a) echinoderms (b) sponges (c) helminthes (d) coelenterates.

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Last Answer : (b) sponges

Select the taxon mentioned that represents both marine and fresh water species. (a) Echinoderms (b) Ctenophora (c) Cephalochordata (d) Cnidaria

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Which of the following animals are true coelomates with bilateral symmetry? (a) Adult Echinoderms (b) Aschelminthes (c) Platyhelminthes (d) Annelids

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Comparison between Chordates and Non-chordates -Biology

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Comparison between Chordates and Non-chordates -Biology

Description : Comparison between Chordates and Non-chordates -Biology

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how do lower chordates survive on their adaptive features?

Description : how do lower chordates survive on their adaptive features?

Last Answer : echinoderms, cnidaria and other forms

How many of the following chordates have flame cells as exretory organ. Planaria, Ascaris, Amphioxus, Tapeworm, Nereis, Scoliodon.

Description : How many of the following chordates have flame cells as exretory organ. Planaria, Ascaris, Amphioxus, Tapeworm, Nereis, Scoliodon.

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In chordates, basically the pharynx is

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Which of the following group of characters is present in all chordates in some or other stage in their life or Chordates differ from nonchordates in h

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Which of the following characters is shared by all chordates at some stage of life ?

Description : Which of the following characters is shared by all chordates at some stage of life ?

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Chordates are distingished from non- chordates by the presence of

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Last Answer : Chordates are distingished from non- chordates by the presence of A. Brain B. Dorsal tubular hollow ... Ventral nerve cord D. Dorsal soild nerve cord

The distinguishing feature of all chordates is

Description : The distinguishing feature of all chordates is

Last Answer : The distinguishing feature of all chordates is A. A ventrally placed nerve cord B. A water vascular system C. A chitinous exoskeleton D. Notochord

Chordates process

Description : Chordates process

Last Answer : Chordates process A. Dorsal nerve cord placed below gut B. Single hollow nerve cord placed dorsal to ... cord D. Single solid and ventral nerve cord

An important characteristic that Hemichordates share with Chordates is

Description : An important characteristic that Hemichordates share with Chordates is

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Name the phylum that forms connecting link between Chordates and Non-chordates.

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Last Answer : Name the phylum that forms connecting link between Chordates and Non-chordates.

Which group of chordates possess sucking and circular mouth without jaws?

Description : Which group of chordates possess sucking and circular mouth without jaws?

Last Answer : Which group of chordates possess sucking and circular mouth without jaws?

In some chordates, the notochord is replaced by cartilaginous or bony vertebral column. Name the chordates which possess this character.

Description : In some chordates, the notochord is replaced by cartilaginous or bony vertebral column. Name the chordates which possess this character.

Last Answer : In some chordates, the notochord is replaced by cartilaginous or bony vertebral column. Name the chordates which possess this character.

How do chordates reproduce?

Description : How do chordates reproduce?

Last Answer : Reproduction in beings of the phylum Chordata is sexual, with the exception of urochordates that can also reproduce asexually. In some classes (cyclostomes, osteichthyes fishes and amphibians) there is ... placental mammals are viviparous (embryos develop inside the mother's body, feeding from her).

In chordates the nervous system is dorsal and highly cephalized while in most invertebrates the nervous system is ganglial and ventral.

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The tubular and dorsal nervous system of chordates is related to the cephalization in these animals and to bilateral symmetry. The presence of neural integrating centers with concentration of neurons in the brains and the spinal cord (central nervous system, CNS) allowed the increase of the interaction complexity between these animals and the environment. Receptor (afferent conduction) and efferent (motor, regulatory and behavioral reactions) functions come out more sophisticated in chordates due to the presence of more well-developed neural networks. These features have been preserved by evolution as they provide adaptive advantage to their owners.

Description : The tubular and dorsal nervous system of chordates is related to the cephalization in these animals and to bilateral symmetry. The presence of neural integrating centers with concentration of ... These features have been preserved by evolution as they provide adaptive advantage to their owners.

Last Answer : How can the tubular-dorsal nervous system in chordates be compared to the nervous pattern present in invertebrates?

Is the tubular-dorsal nervous system of chordates associated to radial or lateral symmetry?

Description : Is the tubular-dorsal nervous system of chordates associated to radial or lateral symmetry?

Last Answer : How does that explain the complexity level of the nervous system reached by the vertebrate evolutionary branch?

What does radial symmetry mean? What is the type of symmetry found in chordates? Which are other phyla of the animal kingdom that present species with radial symmetry?

Description : What does radial symmetry mean? What is the type of symmetry found in chordates? Which are other phyla of the animal kingdom that present species with radial symmetry?

Last Answer : Radial symmetry means (biologically) that the animal structures are situated in a radial or circular pattern around a center point with nonexistence of sides, like right or left. An ... Echinodermata. (It is considered that the simplicity of poriferans does not characterize any symmetry.)

What are the differences between vertebrates and the other chordates?

Description : What are the differences between vertebrates and the other chordates?

Last Answer : Vertebrates are different because they have a spinal column (vertebral column). In these animals the notochord of the embryonic stage is substituted by the vertebral column in adults.

How are chordates classified?

Description : How are chordates classified?

Last Answer : Chordates are classified into four sub phyla: a) Subphylum Hemichordata: Notochord is restricted to the anterior half of the body. Ex: Balanoglossus. b) Subphylum Urochordata: Notochord is present ... is restricted only to the embryonic stage. In adults it is replaced by vertebral column.

Mention the three unique characteristics of chordates.

Description : Mention the three unique characteristics of chordates.

Last Answer : a) Presence of a solid supporting structure on the dorsal side of the body called notochord. b) Presence of dorsal, hollow, tubular nerve cord. c) Presence of openings in the pharynx called gill slits atleast in the embryonic stages.

What are chordates?

Description : What are chordates?

Last Answer : Organisms characterized by the presence of a notochord are called chordates.

What do you mean by chordates? Write down their characteristics?

Description : What do you mean by chordates? Write down their characteristics?  

Last Answer : The basic characteristics of chordates are: -  Notochord: - It is rod like structure made up on semi-rigid body of cells. It is enclosed in the sheath of connective tissues. It is located ... , whose anterior part enlarge into brain. Postanal tail is also present at some stages beyond anus.  

Which of the following characters is absent in all chordates? (a) Diaphragm (b) Coelom (c) Pharyngeal gill clefts (d) Dorsal nerve cord

Description : Which of the following characters is absent in all chordates? (a) Diaphragm (b) Coelom (c) Pharyngeal gill clefts (d) Dorsal nerve cord

Last Answer : (a) Diaphragm

In which of the following, notochord is present in embryonic stage? (a) All chordates (b) Some chordates (c) Vertebrates (d) Non chordates

Description : In which of the following, notochord is present in embryonic stage? (a) All chordates (b) Some chordates (c) Vertebrates (d) Non chordates

Last Answer : (a) All chordates

Important characteristic that hemichordates share with chordates is (a) ventral tubular nerve cord (b) pharynx with gill slits (c) pharynx without gill slits (d) absence of notochord.

Description : Important characteristic that hemichordates share with chordates is (a) ventral tubular nerve cord (b) pharynx with gill slits (c) pharynx without gill slits (d) absence of notochord.

Last Answer : (b) pharynx with gill slits

An important characteristic that Hemichordates share with Chordates is : (1) Ventral tubular nerve cord (2) Pharynx with gill slits (3) Pharynx without gill slits (4) Absence of notochord

Description : An important characteristic that Hemichordates share with Chordates is : (1) Ventral tubular nerve cord (2) Pharynx with gill slits (3) Pharynx without gill slits (4) Absence of notochord

Last Answer : (2) Pharynx with gill slits

What is the end product of glycolysis (fermentation) in chordates (pron: KOR-dates) when there is INSUFFICIENT oxygen? a) lactic acid b) hydrogen c) sugar d) alcohol

Description : What is the end product of glycolysis (fermentation) in chordates (pron: KOR-dates) when there is INSUFFICIENT oxygen? a) lactic acid b) hydrogen c) sugar d) alcohol

Last Answer : ANSWER: A -- LACTIC ACID