Environmental Studies

Important Notes

Part 3

• In some animals you can see the ears, in some you cannot. 
• We cannot see a bird’s ears. A bird has tiny holes on both sides of its head. Generally, the holes are covered with feathers. They help the bird to hear.
• The different patterns on the animals are due to the hair on their skins.

• Those animals whose ears you can see have hair on their body. These animals give birth to the young ones. 
• Those animals that do not have ears on the outside, do not have hair on their body. These animals lay eggs.

Elephant

 

• The baby elephant enjoyed playing in the water. The mothers lay down in the water and mud on the river bank.
• An adult elephant can eat moret than 100 kilograms of leaves and twigs in one day.
• Elephants do not rest very much. They sleep for only two to four hours in a day.
• Elephants love to play with mud and water. The mud keeps their skin cool. Their big ears also work like fans. The elephants flap these to keep themselves cool.
• An elephant herd has mainly females and baby elephants. The oldest female is the leader of the herd. A herd may have 10 to 12 female elephants and young ones.
• Male elephants live in the herd till they are 14-15 years old. Then they leave their herd and move around alone.

Khejadi Tree

The Khejadi tree is found mainly in desert areas. It can grow without much water. Its bark is used for making medicines. People cook and eat its fruits(beans). Its wood is such that it will not be affected by insects.

RTE-Act 2009

This provides the right of free and compulsory education to each child aged 6 to 14 years.

Bee Keeping

 

• In Bihar there are many litchi trees. Honeybees are attracted to the litchi flowers. Many people do bee-keeping and collect honey.
• Courses are run by the government for learning bee-keeping.
• Honeybee lay their eggs from October to December. This is the best time to start bee-keeping.
• Every beehive has one Queen Bee that lays eggs. There are only a few males in the hive. Most of the bees in the hive are worker-bees. These bee work all day. They make the hive and also look after the baby bees. They fly around flowers in search of nectar. They collect nectar from flowers for honey.
• When one bee finds flowers with nectar, it does a special kind of dance by which the other bees can know where the nectar is.
• The worker-bees are very important for the hive. Without worker-bees there would be neither hive nor any nectar collection. All bees in  the hive, would go hungry.
• The male bees have no special role as  workers.
• Ants live and work together like honeybees. The Queen Ant lays the eggs, the Soldier Ants look after and guard the ant’s nest. Worker Ants are always busy looking for food and bringing it to the nest. Termites and wasps also live like this.

 

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