Phyla which contain only few organisms
Notochord is restricted at the caudal end.
The tunic is transparent and thin with circular bands of muscles within the walls of the test
The persistent notochord extends from the tip of the tail to the region beyond the brain.
• These animals have a true vertebral column and internal skeleton, allowing a completely different distribution of muscle attachment points to be used for movement.
Which of these cannot regulate their body temperature
Which of these belong to Cyclostomata
Which of these is Chondrichthyes
A tympanum represents
• They are mostly terrestrial animals and their body is covered by dry and cornified skin, epidermal scales or scutes.
The hind limbs have scales and are modified for walking, swimming or clasping the tree branches.
They are homoiothermous animals, i.e., they are able to maintain a constant body temperature.
Elongated limbless amphibians leading a borrowing life in moist soil.
Vocal sacs are absent in
Carapace and plastron form the body covering in which of these animals
Includes modern flying birds with well developed flight muscles.
_____________ filter-feed on brine shrimp and blue-green algae
Which of these show presence of brood pouch?
Which of these infra class has placental mammals
Largest living primate and powerful ape
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