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All questions of Our Changing World for Grade 2 Exam

Choose odd one out
  • a)
    giraffe
  • b)
    horse
  • c)
    donkey
  • d)
    tiger
Correct answer is option 'D'. Can you explain this answer?

Baishali Ahuja answered
Understanding the Odd One Out
In the given options, we need to identify which animal does not belong with the others based on certain characteristics.
Animal Classification
- Giraffe: A tall, herbivorous mammal known for its long neck.
- Horse: A domesticated mammal often used for riding and farm work, primarily herbivorous.
- Donkey: Another domesticated herbivorous mammal, closely related to horses.
- Tiger: A large, carnivorous feline that hunts for food.
Key Characteristics
- Diet:
- Giraffe, horse, and donkey are all herbivores, meaning they primarily eat plants.
- Tiger is a carnivore, which means it eats meat. This distinction makes it different from the other three.
- Domestication:
- Horse and donkey are commonly domesticated animals used by humans for various purposes.
- Giraffes are wild animals and are not typically domesticated.
- Tiger is also a wild animal and is not domesticated, but it stands apart as a predator.
Conclusion
The correct answer is option 'D' (Tiger) because:
- It is the only carnivorous animal among the listed options.
- It is not domesticated like the horse and donkey, which are integral to human activities.
In summary, the tiger’s dietary habits and its wild nature establish it as the odd one out in this list.

Which of the following animals eat the flesh of dead animals?
  • a)
    Shark              
  • b)
    Snake              
  • c)
    Hyena    
  • d)
    None of these
Correct answer is option 'C'. Can you explain this answer?

  • A lone hyena feeds mostly on dead animals.
  • Hyenas may consume an animal that has died of injuries, or it may steal meat from another carnivore, such as a lion.

Which of the following eat both plants and other animals as well?
  • a)
    Herbivorous
  • b)
    Omnivorous
  • c)
    Carnivorous
  • d)
    Both (a) and (c)
Correct answer is option 'B'. Can you explain this answer?

  • Herbivorous animal eat only plants and plant products.
  • Carnivorous eat only flesh of other animals.
  • Omnivorous animals eat plants and other animals.

Which of the following animals live in holes?
  • a)
    Lizard              
  • b)
    Rat                  
  • c)
    Squirrel          
  • d)
    None of these
Correct answer is option 'B'. Can you explain this answer?

Amar Basu answered
Animals that live in holes

Introduction:
Some animals have adapted to living in holes as a way to protect themselves from predators or harsh environmental conditions. Let's explore which animals from the given options live in holes.

Analysis:
Let's analyze each option to determine which animal lives in holes:

a) Lizard:
Lizards are reptiles that can be found in various habitats, including deserts, forests, and grasslands. While certain species of lizards may seek refuge in burrows or crevices, they are not typically known for living in holes. Therefore, lizards do not fit the criteria of animals that live in holes.

b) Rat:
Rats are rodents that are known for their burrowing behavior. They dig extensive networks of tunnels and live in underground burrows, making them a perfect candidate for animals that live in holes. Rats construct complex burrow systems that provide them with shelter, protection, and a place to raise their young. Therefore, rats are animals that live in holes.

c) Squirrel:
Squirrels are small mammals that are known for their agility and ability to climb trees. While squirrels may use tree cavities or build nests in tree branches, they do not typically live in holes in the ground. Squirrels prefer elevated habitats that provide them with a better vantage point to spot predators or potential food sources. Therefore, squirrels do not live in holes.

Conclusion:
Out of the given options, only the rat is an animal that lives in holes. Rats are well adapted to living in underground burrows, which provide them with protection and shelter.

Which of the following animals do not live in holes?
  • a)
    Squirrel          
  • b)
    Snake              
  • c)
    Mole         
  • d)
    None of these
Correct answer is option 'A'. Can you explain this answer?

Om Sengupta answered
Explanation:

Introduction:
There are various animals that live in holes as part of their natural habitats. However, not all animals are adapted to living in holes. In this case, we need to identify the animal that does not live in holes among the given options.

Squirrel:
- Squirrels are small to medium-sized rodents that are known for their bushy tails and their ability to climb trees.
- While squirrels do not primarily live in holes, they may use tree cavities or build nests called dreys in the branches of trees.
- Dreys are usually made of twigs, leaves, and other materials and provide shelter for squirrels.

Snake:
- Snakes are elongated, legless reptiles that are known for their ability to slither and crawl on the ground.
- While snakes do not typically live in holes, they may seek shelter in burrows or crevices for protection or to regulate their body temperature.
- However, snakes are not dependent on holes for their survival and can be found in a variety of habitats.

Mole:
- Moles are small, burrowing mammals that are adapted to living underground.
- Moles dig tunnels and create complex burrow systems in the soil, which serve as their homes.
- These burrows have various chambers for nesting, storing food, and traveling.
- Moles have specialized adaptations such as strong forelimbs and shovel-like hands that allow them to dig efficiently.

Conclusion:
Among the given options, the animal that does not primarily live in holes is the squirrel. While squirrels may utilize tree cavities or build nests in the branches of trees, they are not dependent on holes in the ground for their survival. Both snakes and moles have adaptations that allow them to live in holes or burrows.

Oil is not abstained from which of the following plant?
  • a)
    Mango plant
  • b)
    Sunflower plant
  • c)
    Mustard plant
  • d)
    Coconut plant
Correct answer is option 'A'. Can you explain this answer?

Prateek Saini answered
Answer:

Introduction:
In this question, we are asked to identify the plant from which oil is not abstained. We are given four options: Mango plant, Sunflower plant, Mustard plant, and Coconut plant. We need to determine which plant does not produce oil.

Explanation:
Let's analyze each option one by one:

a) Mango plant:
Mango plants do not produce oil. The fruit of the mango plant contains a single large seed, called the mango kernel or mango stone. However, this kernel does not yield oil. Mangoes are primarily consumed as a fruit and are known for their delicious taste.

b) Sunflower plant:
Sunflower plants are one of the major sources of edible oil. The seeds of the sunflower plant are highly prized for their oil content. Sunflower oil is commonly used for cooking purposes and is known for its light flavor and high smoking point.

c) Mustard plant:
Mustard plants produce oil that is commonly known as mustard oil. The seeds of the mustard plant are crushed or pressed to extract the oil. Mustard oil is widely used in cooking, particularly in Indian and Asian cuisines. It has a strong flavor and is often used for its distinctive taste and aroma.

d) Coconut plant:
Coconut plants are another significant source of oil. The coconut itself is a fruit, and the oil is extracted from the copra, which is the dried kernel of the coconut. Coconut oil is widely used for cooking, as well as for various other purposes such as skin and hair care.

Conclusion:
After analyzing all the options, we can conclude that the plant from which oil is not abstained is the Mango plant. While sunflower, mustard, and coconut plants all produce oil, the mango plant does not yield oil.

Tiger eats only grass.
  • a)
    True
  • b)
    False
Correct answer is option 'B'. Can you explain this answer?

Pranav Singh answered
Tigers are requisite carnivores meaning that they eat Meat and animal byproducts.

Direction: Select the odd one out
  • a)
    money plant
  • b)
    grapevine
  • c)
    bean
  • d)
    pumpkin
Correct answer is option 'D'. Can you explain this answer?

Kds Coaching answered
Money plant, grapevine, and bean are all climbers—plants that need support to grow upward. Pumpkin is a creeper, which means it spreads along the ground and does not climb upward. Therefore, the odd one out is pumpkin.

White tiger is an endangered animal.
  • a)
    True
  • b)
    False
Correct answer is option 'A'. Can you explain this answer?

Pranav Singh answered
The White Tiger is a Bengal Tiger which is a species listed by the IUCN as Endangered and therefore severely threatened in its surrounding environment.

Small plants with weak stems are called herbs. Which of the these is a herb?
  • a)
    Tulsi
  • b)
    Apple
  • c)
    Gulmohar
  • d)
    Grapevine
Correct answer is option 'A'. Can you explain this answer?

Kds Coaching answered
  • Tulsi, also known as holy basil, is a small plant with a soft stem, making it a herb.
  • Herbs are typically characterized by their aromatic properties and are often used in cooking or for medicinal purposes.
  • In contrast, apple, gulmohar, and grapevine are larger plants or trees, classified as shrubs or woody plants.

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