Question

True notochord is found in..
असली नोटोकॉर्ड ...........में पाई जाती है।
Zoological name of dogfish is..............
डॉगफिश का जन्तुवर्गीय नाम............. है।
- Neotany is found in............. (नियोटेनी .......... में पायी जाती है
Sphenodon isa.................. (स्फेनोडॉन........ है।)
Dental formula of dog is............. (कुत्तों का दंतसूत्र ......... है​

Answer 1

Answer:

Phylum Chordata

Squalus acanthias

Axolotl

Reptile

2 (I3/I3, C1/C1, P4/P4, M2/M3)

Impotant points to remember:

A notochord is a primitive beginning to the backbone. It appears in embryos as a small flexible rod made from cells from the mesoderm, which is one of the three layers of cells of embryos. Notochords are only found in the phylum chordata, a group of animals that includes humans.

Neoteny is alternatively also called juvenilization and is the process of delay in the physilogical development of an organism.