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

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

1 Answer

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 dorsal to the alimentary canal and ventral to nervous system running for anterior to posterior end. Its major is to provide support and stiffens the body. It acts like skeletal axis. In most animals backbone is present instead of notochord. 

Pharyngeal Pouches: - It is present in some stages of chordates. Pharyngeal pouches develop into gill slits in the adult animals that live in water and breath by gills. While in land animals they replaced by other organs e.g. inner part of ear. 

Hollow Dorsal Nervous System: - In all chordates a hollow dorsal nervous system is present, whose anterior part enlarge into brain. Postanal tail is also present at some stages beyond anus.  
by

Related questions

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 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.)

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

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

Description : 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

Last Answer : Which of the following group of characters is present in all chordates in some or other stage in ... D. Gill slits, vertebral column, and notochord

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?

Comparison between Chordates and Non-chordates -Biology

Description : Comparison between Chordates and Non-chordates -Biology

Last Answer : answer:

Comparison between Chordates and Non-chordates -Biology

Description : Comparison between Chordates and Non-chordates -Biology

Last Answer : answer:

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.

Last Answer : How many of the following chordates have flame cells as exretory organ. Planaria, Ascaris, Amphioxus, Tapeworm, ... A. One B. Two C. Three D. Four

In chordates, basically the pharynx is

Description : In chordates, basically the pharynx is

Last Answer : In chordates, basically the pharynx is A. Perforated B. Non-perforated C. Present in the gut ... D. A source of thyroxin which controls meta morphosis

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 ?

Last Answer : Which of the following characters is shared by all chordates at some stage of life ? A. Notochord B. ... C. Pharyngeal gill slits D. All of the above

Chordates are distingished from non- chordates by the presence of

Description : Chordates are distingished from non- chordates by the presence of

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

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

Echinoderms and chordates have

Description : Echinoderms and chordates have

Last Answer : Echinoderms and chordates have A. Pseudocoel B. Shizocoelom C. Enterocoelom D. Hemocoel

An important characteristic that Hemichordates share with Chordates is

Description : An important characteristic that Hemichordates share with Chordates is

Last Answer : An important characteristic that Hemichordates share with Chordates is (a) absence of notochord (b) ... gill slits (d) pharynx without gill slits

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

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

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.

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

Last Answer : What is the group of the phylum Chordata that first colonized the terrestrial environment?

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 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

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.

What are chordates?

Description : What are chordates?

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

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

Sun is glorious star in our sky. Write down its characteristics with reference to the following date:

Description : Sun is glorious star in our sky. Write down its characteristics with reference to the following date:

Last Answer : (a) Distance from earth 149,600,000 kilometers, or 92,960,000 miles (b) Mean distance from center of galaxy 26,000 light-years (c) Velocity around centre of galaxy 251 km ... the core temperature reaches around 100 million kelvins and will produce carbon, entering the asymptotic giant branch phase

Write down the characteristics of placental mammals?

Description : Write down the characteristics of placental mammals? 

Last Answer : i) In these mammals embryo completes its development inside the body of mother in uterus. ii) After gestation period, young ones are born. iii) Embryo remains in the uterus and gets its ... 22 months. vi) The condition of young ones of various mammals at birth is different. 

Write down the characteristics of egg laying mammals?

Description : Write down the characteristics of egg laying mammals? 

Last Answer : i) These mammals lay eggs. Mostly two eggs are laid in one year. ii) Eggs are laid in burrows of animals. iii) Young ones are hatched from eggs. iv) Their egg laying ... shows their relationship with reptiles. v) Their common examples are duck bill platypus, spiny anteater. 

Write down the characteristics of Mammalia? What are its groups?

Description : Write down the characteristics of Mammalia? What are its groups?

Last Answer : Characteristics: - i) Highly advanced animals are included in this group. ii) Man is also a mammal. iii) Their body is covered with hairs. But in few some areas are restricted by hairs. ... of mammals. i) Egg Laying mammals. ii) Pouched mammals. iii) Placental mammals. 

Write down the characteristics of class Aves? Also give the different groups?

Description : Write down the characteristics of class Aves? Also give the different groups? 

Last Answer : Characteristics: - i) Members of these groups are called birds. ii) The organisms in this group are very beautiful and have melodious voices. iii) There are more than 9000 species are present of ... kite etc. Humming bird is smallest in the world. Its size is two inches long. 

Write down the characteristics of class Reptilia? Also give example?

Description : Write down the characteristics of class Reptilia? Also give example? 

Last Answer : Characteristics: - i) Members of this groups are called reptiles. ii) Most of animals of this group are terrestrial. A few live in water. iii) They are also called crawlers. iv) ... garter and copper head keep their shelled eggs in their body, which hatch inside the body. 

Write down the characteristics of vertebrates?

Description : Write down the characteristics of vertebrates?  

Last Answer : i) Among chordates vertebrates is the largest group. ii) There are more than 47000 of vertebrates are present on land. iii) Vertebrates are divided into 5 different classes. iv) These classes are ... vi) The anterior end of vertebral column is box like called cranium which protects the brain. 

Write down the characteristics of phylum Arthropoda?

Description : Write down the characteristics of phylum Arthropoda? 

Last Answer : i) Artho mean jointed and poda means foot. ii) So jointed legs are present in these animals. iii) They are versatile animals. So they found in air, land and water. iv) The bodies of these ... examples are prawn, crab, spider, insects etc. vii) One third of this phylum consists of insects. 

Write down the characteristics of Phylum Mollusca?

Description : Write down the characteristics of Phylum Mollusca?

Last Answer : i) It has about 50,000 species. ii) They are found in aquatic and moist habitat. iii) Mollusca is Latin word means soft. iv) Some animals have internal shell. Some are without shell. ... form their shell. ix) Their common examples are snails, fresh water mussel, cuttle fish etc. 

Write down the characteristics of phylum Annelida?

Description : Write down the characteristics of phylum Annelida?  

Last Answer : i) They are found in moist soil, ponds, river and sea. ii) Most animals are free living but some are parasites. iii) Their bodies have external and internal segmentation called metameric ... , circulatory, reproductive and excretory systems. v) Their common examples are earthworm, neries etc.  

Write down the characteristics of phylum Platyhelminthes.

Description : Write down the characteristics of phylum Platyhelminthes. 

Last Answer : i) They are also called flat worms because their body is flattened. ii) These are triploblastic animals. So their body is divided into three layers. Ectoderm, Mesoderm and Endoderm. iii) ... of other animals. iv) Their common examples are Liver Fluke, Tapeworm and Planaria etc. 

Write down the characteristics of Phylum Porifera?

Description : Write down the characteristics of Phylum Porifera?

Last Answer : These animals are called Porifera because animals of this group have small pores on their bodies. These are called sponges. Habitat: - They are aquatic animals and mostly found in sea water. Some are ... water. Examples: - Their examples in seawater is sponge. And spongilla is in fresh water. 

Write down the characteristics of Algae?

Description : Write down the characteristics of Algae? 

Last Answer : i) Algae are simple eukaryotes. ii) They are chlorophyllous and can prepare their own food. iii) They have cellulose in cell wall. iv) Their reproductive organs are unicellular and body is simple. ... groups of algae are Green algae, Brown algae, Red Algae, Golden brown algae, and Diatoms. 

Write down the characteristics of plants?

Description : Write down the characteristics of plants? 

Last Answer : i) Plants are multicellular organisms. ii) They are photosynthetic eukaryotes. iii) In plants, zygote develops into a small-protected embryo that develops into a complete new plant; hence ... made up of cellulose (dead cells) v) Their reproductive organs are multicellular. 

Write down characteristics of object oriented programming.

Description : Write down characteristics of object oriented programming.

Last Answer : Characteristics of object oriented programming are: Emphasis is on data rather than procedure. Programs are divided into objects. Data structures are designed such that they characterize the ... can be easily added whenever necessary. Follows bottom-up approach in program designing.