write some common characters of pisces reptilia and aves
Answers
Answer:
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 shape.
Answer:
PISECES:
→ It includes all water living animals.
→ They have 2 chambered heart.
→ Gills are present in them which helps in respiration.
→ Muscular tail is present for movement.
→ These are cold blooded animals.
→ Ex :- Dog fish, Rohu, Shark etc.
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→ These are first vertebrates fully adopted for life on dry land. Some live in water but they also return to the land for breeding.
→ The heart is incompletely 4 chambered having two auricles and a partly divided ventricle. (Crocodiles have 4 chambered heart)
→ Respiration occurs by lungs.
→ Two pairs of limbs are present in them which act as appendages.
→ Ex :- Lizards, Snakes, Tortoise, Crocodiles etc.
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→ This class includes all birds. Most of them can fly. A few lost the power to fly.
→ Heart is 4 chambered having two auricles and two ventricles. Heart is relatively large and fast beating for quick supply of adequate amount of blood during flight.
→ Respiration takes place by lungs.
→ Pair of limbs are present in them. The forelimbs are modified into wings for flight.
→ Ex :- Ostrich, Crow, Peacock, Pigeon etc
Explanation: