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In which sub-phylum Notochord extends fr...

In which sub-phylum Notochord extends from head to tail region and persistent throughout their life?

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Chondrichthyes
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In the sub-phylum (_i_) notochord is present only in the larval tail, while in (_ii_), it extends from head to tail region and is persistent throughout their life. In (_iii_) class of vertebrate notochord is replaced by certilaginous vertebral column and (_iv_) class of vertebrate the notochord is replaced by bony vertebral column. select the option which is correct for all (i)-(iv) blanks.

Tail is persistent throughout life in

Read the following statement and select the correct option : (a) In lancelets notochord extends from head to tail region and is througout their life . (b) In tunicates ,notochord is present only in the larval tail .

Which of the following statements are true for the phylum-Chordata? (a) In urochordata notochord extends from head to tail and it is present throughout their life. (b) In vertebrata notochord is present during the embryonic period only. (c) Central nervous system is dorsal and hollow. (d) Chordata is divided into 3 subphyla: Hemichordata,Tunicata and Cephalochordata.

Notochord is restricted to the tail region in

Notochord is persistent throughout life in

Notochord is persistent throughout life in

In which subphylum notochord is present only in larval tail?

Which of the following statements is/are not true A. In Urochordata, notochord is present only in larval tail. B. In Cephalochordata, notochord extends from head to tail region. C. Branchiosoma belongs to Hemichordata D. Only one Class of living members, Class Cyclostomata represents the Super Class Agnatha.

Statement (S) Lancelets are jawless primitive fish like vertebrates Statement (R) In lancelets notochord tubular nerve cord and pharyngeal gill slits are present the throughout their life

ALLEN-ANIMAL KINGDOM-Exercise
  1. In which class of fishes mouth is located ventrally?

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  2. Which types of scales are found on the skin of cartilaginous fishes?

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  3. In which sub-phylum Notochord extends from head to tail region and per...

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  4. The teeth in cartilaginous fishes are formed due to modification of wh...

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  5. What is the name of structure that prevents the bony fishes from sinki...

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  6. Why cartilaginous fishes have to swim constantly?

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  7. Which fish has an electric organ?

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  8. Most poisonous fish is

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  9. The animals which do not have a steady body temperature are

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  10. Organisms that can regulate their body temperature and remain constant...

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  11. How many pairs of gills are present in bony fishes?

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  12. Name the cap which covers the gills in fishes:

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  13. Which structure represents ear in amphibians and reptiles?

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  14. In which class of vertebrates 3-chambered heart is found?

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  15. The cloaca in frog is a common chamber for the urinary tract, reprodu...

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  16. Which class of vertebrates possesses dry and cornified skin with epide...

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  17. In which reptiles 4-chambered heart is present?

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  18. Snakes and lizards shed their scales as skin cast it is

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  19. The presence of feathers is characteristic of which class?

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  20. The bones of birds are long and hollow withh air cavities. These types...

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