CBSE Class 4 EVS NCERT Solutions: A Day With Nandu

Solution: Nandu, a young elephant, weighs 200 kilograms. To compare this with your own weight, you need to know your current weight. For example, if your weight is 25 kilograms, then Nandu weighs much more than you do.

My weight is 25 kg.

Solution: Nandu weighs 200 kilograms. If we assume a child's weight is 25 kilograms, we can find out how many children's weights would equal Nandu's weight by dividing Nandu's total weight by the weight of one child.

Calculation: 200 kg (Nandu's weight) ÷ 25 kg (child's weight) = 8 children.

Therefore, the weight of 8 children, each weighing 25 kg, would add up to Nandu's weight of 200 kg.

Ans. 8 children of my weight will add up to Nandu's weight.

Solution: If I were Nandu, living in an elephant herd, my day would be filled with activities typical for a young elephant. I would enjoy playing with other young elephants, running around, and exploring my surroundings. Eating is also a major part of an elephant's life, so I would spend time feeding on leaves and grass. At the end of the day, I would feel safe and comfortable sleeping close to my mother.

If I were Nandu, I would play, dance, run, and eat the whole day. In the night I would sleep with my mom.

Solution: In an elephant herd, the oldest female elephant, often called the matriarch, leads the group and makes important decisions for the safety and well-being of all. In a human family, decision-making can be shared among members. Often, parents or elders take the lead, but many families discuss and decide together.

In my family most of the decisions are taken by my Dad and Mom together.

Solution: Spending a whole day with friends is a wonderful opportunity for fun and connection. If I had such a day, I would engage in various activities that we all enjoy. This would include playing games, singing songs, dancing, sharing meals, and telling each other stories. The main goal would be to have a lot of fun and create happy memories together.

If I could spend a whole day with my friends, I would like to do the following: Play, sing, dance, eat, tell and listen stories and have a lot of fun.

Solution: Many animals live together in groups called herds for protection, finding food, and social interaction. Some common examples of animals that live in herds include:

• Deer
• Zebra
• Cows
• Buffaloes
• Horses
• Antelopes (like Impala and Gaur)
• Sheep
• Goats

Ans. Deer, Zebra, Chital, Gaur, Impala, Cows.

Solution: Yes, humans typically live in groups, such as families and communities. Living together in a group has several advantages and disadvantages.

Good Points of Living Together:

• Security: Being in a group provides safety from dangers.
• Strength: A group is often stronger and can achieve more than individuals alone.
• Mutual Help: Members can support and assist each other in times of need.
• Companionship: Living together offers company and reduces loneliness.
• Shared Enjoyment: Many activities are more enjoyable when done with others.

Bad Points of Living Together:

• Quarrels: Differences in opinions or needs can lead to disagreements and fights.
• Dependency: Individuals might become too reliant on the group and lose independence.
• Less Freedom: Sometimes, group rules or expectations might limit personal freedom.
• Conflicts: Managing different personalities and needs can be challenging.

Good Points: Living together gives security, Living together gives strength, We can help each other by living together, We can enjoy more by living together.

Bad Points: Quarrels may occur, We may become dependent, We may not feel fully free.

Solution: Riding on an elephant can be a unique and memorable experience. Elephants are very large and strong animals, so sitting on their back provides a high vantage point. The ride might feel majestic and a bit bumpy due to the elephant's gait. It's often described as a thrilling and impressive experience.

Ans. Once I took a ride on an elephant. It felt great.

Solution: Many people have the opportunity to sit on or ride various animals, depending on where they live and what is available. Common animals that people ride include horses, elephants, and camels. In some regions, donkeys and buffaloes are also used for riding or carrying people.

Ans. Horse, elephant, camel, donkey, and buffalo.

Solution: Dogs are common animals found in many homes and communities. They are known for their loyalty and are often kept as pets. Dogs are four-legged animals that provide security to homes by guarding against intruders. They are omnivores and eat a varied diet including meat, rice, and milk. Female dogs give birth to puppies, which are young dogs. Puppies are often considered very cute and playful.

Ans. I see dogs around me. Dog is an obedient animal. It gives us security from thieves. It keeps a watch on our homes. Dog is a four footed animal. It eats meat, rice, milk, bread, etc. Female dogs give birth to babies. Baby dogs which are called puppies are lovely.

Solution: The egret, a type of bird, often sits on the back of a buffalo because it benefits both animals. The egret finds a convenient place to search for and eat small insects, ticks, and other parasites that live on the buffalo's skin. In return, the buffalo gets relief from these irritating pests. This is an example of a symbiotic relationship called commensalism, where one organism benefits and the other is neither harmed nor helped significantly.

Ans. Egret is a friend of buffalo. It eats the insects from the skin of buffalo.

Solution: Yes, it is common to observe animals riding on or interacting closely with other animals in nature. A frequent sight is a bird perched on the back of a larger animal. For instance, egrets are often seen sitting on buffaloes, or sparrows might be seen on cows or other grazing animals. This usually happens when the bird is looking for insects or a place to rest.

Ans. I saw an egret sparrow sitting on a buffalo.

Solution: In the scenario where one animal is on the back of another, the animal that is positioned on top is considered to be riding. For example, if a bird like an egret is sitting on a buffalo, the egret is the animal that is riding.

Ans. Egret sparrow is riding.

Solution: The animal that provides the ride is the one that carries another animal or person on its back. In the context of an egret sitting on a buffalo, the buffalo is the animal giving the ride. Similarly, when a person rides a horse, the horse is giving the ride.

Ans. Buffalo gives the ride.

Solution: Humans have domesticated several animals over centuries that are used for riding. These animals are chosen for their strength, endurance, and ability to carry a rider. Common animals used for riding include horses, which are known for their speed and agility; elephants, used in some parts of the world for their size and strength; and camels, adapted to desert environments. Donkeys and mules are also sometimes used for riding, especially for shorter distances or in difficult terrain.

Ans. Horse, elephant, camel, etc.

Solution: Animals play a crucial role in transporting goods and materials, especially in areas where mechanical transport is difficult. Several animals are used for carrying loads due to their strength and ability to traverse various terrains. These include horses, often used with carts or packs; elephants, capable of carrying heavy loads in forests or difficult terrains; camels, known as the 'ships of the desert' for carrying goods across sandy landscapes; donkeys and mules, which are sturdy pack animals; and oxen, often used to pull carts or ploughs for agricultural loads.

Ans. Horse, elephant, ass, camel, ox, etc.