Question

Write some common characters of Pisces, reptilia, and aves.

Answer 1

Hint: Pisces , reptilia and aves belong to phylum chordata.

Complete answer: Pisces They are true Jawed vertebrates with specific organs for respiration, excretion, and blood circulation.
The organisms belonging to this class are poikilothermous meaning that they cannot regulate their own body temperature.
Reptilia: The class name refers to the creeping and crawling mode of locomotion they are mostly terrestrial animals and the body is covered by dry and cornified skin epidermal scales. They do not have an external ear opening tympanum to represent their ear.
Limbs when present are in two pairs.
Aves: The characteristic feature of these is the presence of feathers and most of them can fly except flightless birds. They possess beak.
Forelimbs are modified into wings, and the long bones are hollow with air cavities.

Additional information: Pisces are found in fresh and marine water.
The bodily usually streamline some have a spindle-shaped or elongated body as well their bodies distributed into the head, trunk, and tail. They swim with the help of their tail.
The heart of most reptiles is three-chambered but the heart of crocodiles is 4-chambered.

Note: The digestive tract of birds has additional chambers, the crop and gizzard, the heart is completely four-chambered and they are warm-blooded.