Chapter-4 Animals — Online MCQ Test
ENGLISH · Grade 7 · CBSE(NCERT)
Practice Chapter-4 Animals with a free chapter-wise online MCQ test.
This chapter covers: Birds.
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter-4 Animals — Important Questions & Answers
What is the primary characteristic that distinguishes birds from other animals?
- A. They have four legs
- B. They have feathers and lay eggs
- C. They live only in trees
- D. They are all carnivorous
Answer: B. They have feathers and lay eggs
Feathers and egg-laying are the defining characteristics of birds. These features separate birds from all other animal groups.
Feathers and egg-laying are the defining characteristics of birds. These features separate birds from all other animal groups.
Which of the following is NOT a bird?
- A. Sparrow
- B. Eagle
- C. Bat
- D. Pigeon
Answer: C. Bat
Bat is a mammal, not a bird. Although bats can fly, they lack feathers and lay live young instead of eggs.
Bat is a mammal, not a bird. Although bats can fly, they lack feathers and lay live young instead of eggs.
How do birds communicate with each other?
- A. Through touch only
- B. Through color, songs, and calls
- C. Birds do not communicate
- D. Only through body movements
Answer: B. Through color, songs, and calls
Birds communicate using various methods including distinctive songs, calls, display of colorful plumage, and body movements to convey messages.
Birds communicate using various methods including distinctive songs, calls, display of colorful plumage, and body movements to convey messages.
Compare the skeletal structure of birds and mammals. Why are bird bones different?
- A. Bird bones are heavier to support larger muscles
- B. Bird bones are hollow to reduce weight while maintaining strength for flight
- C. Bird bones are made of different material than mammal bones
- D. There is no difference between bird and mammal bones
Answer: B. Bird bones are hollow to reduce weight while maintaining strength for flight
Bird bones are distinctly hollow with air sacs, providing the strength-to-weight ratio necessary for flight, unlike solid mammal bones.
Bird bones are distinctly hollow with air sacs, providing the strength-to-weight ratio necessary for flight, unlike solid mammal bones.
A researcher observes a bird species that has recently developed a shorter beak length in urban populations compared to rural ones. What evolutionary process might explain this?
- A. Natural selection favoring shorter beaks due to available urban food sources
- B. Beaks intentionally shrink in cities
- C. Urban birds are a different species
- D. This change cannot occur through evolution
Answer: A. Natural selection favoring shorter beaks due to available urban food sources
This demonstrates adaptive evolution: urban environments with different food types (softer seeds, processed food) may favor shorter beaks, selecting for this trait over generations.
This demonstrates adaptive evolution: urban environments with different food types (softer seeds, processed food) may favor shorter beaks, selecting for this trait over generations.