4. The body covering of fish and snake. 5. The seasonal movement of animals from one region to another.
Answer (1)
The body covering of fish and snakes:
Fish are covered in scales. Scales are small, hard plates that grow out of the skin of most fish, providing protection and helping in locomotion by reducing water resistance. They can be cycloid, ctenoid, or ganoid, depending on the species.
Snakes, on the other hand, also have scales, but they are of a different nature compared to fish. A snake’s skin is covered with overlapping scales that protect it from the environment and help in movement. The scales can vary in size and shape depending on their location on the snake’s body, and they also aid in camouflage.
The seasonal movement of animals from one region to another:
This phenomenon is called migration. Migration refers to the large-scale movement of species from one place to another, often driven by factors such as seasonal changes, food availability, breeding, and climate.
Animals like birds, fish, mammals, and even insects engage in migration. For example, many bird species migrate from colder regions to warmer regions to find food and suitable habitats for breeding during the winter. Similarly, animals like wildebeests migrate across the African savannas in search of fresh grazing grounds.
Migration is a survival strategy that allows animals to take advantage of different environments and resources throughout the year.
