Classify and write four characteristics of following animals: 1.Dolphin 2.Salamander 3.Ostrich 4.Turtle 5.Rohu fish
Answers
Vertebrates have evolved a muscular heart to pump blood to body parts. Fishes have two chambered heart. Birds and mammals have four chambered heart, having two auricles and two ventricles. Reptiles, except crocodile, have three chambered heart. Crocodiles have four chambered heart. Thus Dolphin being a mammal has four chambered heart. Salamander being an amphibian has a three chambered heart.
Answer:
dolphin They have two flippers, or fins, on their sides, as well as a triangular fin on the back. Like other whales, they have an insulating layer of blubber (fat) beneath the skin. Although they are similar in appearance to porpoises, dolphins are distinguished from porpoises by their beaklike snout.
salamander Their bodies are long and slender; their skin is moist and usually smooth; and they have long tails. Salamanders are very diverse; some have four legs; some have two. Also, some have lungs, some have gills, and some have neither — they breathe through their skin.
ostrich Ostriches are large, flightless birds. They are between 2.1 and 2.8 m (7 - 9.25 ft) in height, they have a wingspan of approximately 2 m (6.6 ft) and they weigh between 100 and 160 kgs (220 - 350 lbs). They have a long, bare neck, a small head, a huge body and long, muscular legs.
turtle Turtles spend most of their lives in water. They are adapted for aquatic life, with webbed feet or flippers and a streamlined body. ...
Tortoises are land animals. Their feet are round and stumpy, adapted for walking on land. ...
Terrapins live on land and in water, usually in swamps, ponds, lakes and rivers.
rohu fish Description. The rohu is a large, silver-colored fish of typical cyprinid shape, with a conspicuously arched head. Adults can reach a maximum weight of 45 kg (99 lb) and maximum length of 2 m (6.6 ft), but average around 1⁄2 m (1.6 ft)