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प्रश्न
List three features that characterise bony fishes.
उत्तर
- These fishes have bony endoskeleton.
- The skin is covered by ganoid, cycloid or ctenoid scales.
- Gills are covered by an operculum.
- They are ammonotelic.
- They have mesonephric kidneys.
- External fertilization is seen.
संबंधित प्रश्न
“All vertebrates are chordates but all chordates are not vertebrates.” Justify the statement.
What are the modifications that are observed in birds that help them fly?
The limbless amphibian is ______.
Four chambered heart is present in ______.
Which of the following is not correctly paired?
Which of the following is an egg laying mammal?
Pneumatic bones are seen in ______.
List the features that all vertebrates show at some point in their development.
List the functions of air bladder in fishes.
Write the characteristics that contributes to the success of reptiles on land.
Which of the following is NOT a character of Chordata?
A and B are respectively represents?
Give the characteristic features of the following citing one example.
Urochordata and cephalochordata
Give three major differences between chordates and non-chordates and draw a schematic sketch of a chordate showing those features.
