Question 21

Robin is the best prototype of 'bird'

The robin exemplifies the characteristics commonly associated with birds, such as the ability to fly, a lightweight body, and a typical avian appearance. This makes it a more accurate representation of what constitutes a "bird" compared to the other options.

A) Ostrich

While the ostrich is a bird, it is a flightless species and has distinct physical characteristics that set it apart from the typical image of a bird. Its large size and unique adaptations for running make it less representative of the general concept of birds.

B) Penguin

The penguin, like the ostrich, is another flightless bird and is adapted for swimming rather than flying. Its aquatic lifestyle and body shape do not align with the common prototype of birds, which are usually characterized by their ability to fly.

C) Duck-billed platypus

The duck-billed platypus is not a bird; it is a mammal that lays eggs. This option fails to meet the criteria for the prototype of 'bird' and does not possess any of the standard avian features.

D) Robin

The robin is a quintessential example of a bird, known for its ability to fly, song, and typical bird morphology. Its characteristics align closely with the common features people associate with birds, making it the best prototype.

Conclusion

The robin stands out as the best prototype of 'bird' because it embodies the typical traits and behaviors that define avian species. In contrast, the ostrich and penguin are flightless and diverge from common bird characteristics, while the duck-billed platypus is not a bird at all. Thus, the robin is the most representative choice.