Question

write some common characters of pisces, reptilia and aves

Answer 1

Common characteristics of Pisces, Reptilia and Aves are:
1. Triploblastic .
2. Lay eggs ( with some exceptions ).
3. Excrete ammonia, urea, and uric acid.
4. Variety of size and shapes.

Answer 2

The species pisces, reptilian, and aves all belong the same phylum Chordata and hence common characters like:

• Cold-blooded animals.
• Coelomates with organ systems to perform body functions.
• The body exhibits bilateral symmetry.
• Egg-laying animals.
• Triploblastic structure.
• Presence of notochord which is a long cartilaginous rod running from the nerve cord to the digestive tract and provides support to the animal.
• Perforated pharynx with pharyngeal slit.
• Presence of gills.
• Hollow nervous system present dorsally.
• Presence of excretory organs like kidney.
• Presence of post-anal tail.